Percentage Of Cobalt Research Articles

Artificial Neural Network Approach Modeling for Sorption of Cobalt from Aqueous Solution Using Modified Maghemite Nanoparticles

AbstractThis research defines the utilization of the artificial neural network (ANN) for demonstrating the sorption percentage of cobalt from an aqueous solution using modified maghemite nanopartic...

A Study on the Effect of Co Addition on the Microstructure and Mechanical properties of A356 Alloy Cast in Permanent Mould

Aluminium alloys have found application in many areas like automobile, aerospace and in fighter jets. The main problem for these alloys are the lack of mechanical properties and wear properties. These mechanical properties have huge effect from the microstructure. For analyzing the performance of the aluminium alloys, a study is carried out to examine the effect of cobalt addition on the hypoeutectic aluminium alloy microstructure. Pure cobalt of varying weight % were added into a clay- graphite crucible containing Al ingot. The melting was conducted by using an electric arc furnace at a temperature of 850°C±20°C and were poured into a permanent mould to obtain cast specimens. Solutionisation and aging were performed at a temperature of 525°C for 12hrs and 155°C for 1, 2,3,4,5 hrs.. The hardness of the developed alloy was found to increase with an increase in the Co addition. The UTS and YS was found to be increased with an increase in the addition of cobalt and the ductility was found to reduce with increase in the cobalt percentage.

ДОСЛІДЖЕННЯ АМПЛІТУДНО-ЧАСТОТНИХ ЗАЛЕЖНОСТЕЙ ЗАХИСНИХ ВЛАСТИВОСТЕЙ МАГНІТНИХ ЕКРАНІВ НА ОСНОВІ АМОРФНИХ СПЛАВІВ

Сучасні методи екранування допускають використання найбільш придатних металевих матеріалів для одночасного вирішення декількох задач для захисту працюючих та електромагнітної сумісності технічного обладнання. Одним з таких ефективних металевих матеріалів вважають аморфні магнітом’які сплави. Предмет дослідження даної роботи – визначення захисних властивостей аморфного магнітом’якого сплаву при різних значеннях частотних та амплітудних характеристик в залежності від зміни товщини стрічки матеріалу. Досліджено магнітні властивості пермалою від різної частоти екранованого поля з різним відсотковим вмістом нікелю та різною товщиною захисного металевого матеріалу; залежності коефіцієнта екранування магнітом’яких аморфних сплавів від індукції зовнішнього магнітного поля; коефіцієнти екранування аморфного магнітом’якого сплаву різної товщини та різного відсоткового вмісту кобальту від змінних значень амплітуди; магнітооброблений стан та вихідний стан (недоліки та переваги для конкретних умов використання при захисті та економічних вимог); залежності магнітної проникності магнітом’якого аморфного сплаву від різних значень частоти та амплітуди. Мета роботи - визначення коефіцієнтів екранування захисних аморфних магнітом’яких сплавів від амплітудно-частотних характеристик екранованого магнітного поля та обґрунтування ефективності використання таких матеріалів та надання конкретних рекомендацій щодо захисту від електромагнітних полів та випромінювань працюючих людей та сумісності електричного та електронного технічного обладнання. Розроблено захисні властивості магнітних екранів на основі аморфних сплавів у різних амплітудно-частотних діапазонах. Запропоновано раціональні обґрунтовані рекомендації щодо вибору матеріалу для забезпечення найбільш придатних значень коефіцієнтів екранування Доведено експериментально що аморфні магнітом’які сплави мають сприятливі коефіцієнти екранування від частоти екранованого поля, що підвищує ефективність захисту від магнітних полів працюючих людей та спрощує, з економічної точки зору, обрання матеріалу на конкретному виробництві. Отримані графічні залежності надають можливість обирати необхідний захисний металевий матеріал та автоматизувати процеси розроблення засобів оптимального екранування магнітних полів. Багатосерійність досліджень та легка керованість властивостей матеріалів з різним вмістом металевої субстанції, різної товщини стрічки матеріалу, тощо надає змогу змінювати загальні захисті властивості металевого сплаву ( в залежності від поставленої умови на виробництві)

Dissimilar vacuum brazing of WC-Co and cold work steel utilizing a new near-eutectic silver-copper filler alloy

Tungsten carbides are extremely high in hardness and they are wear-resistant materials. However, they are extremely brittle materials that render them ideal for many applications. Brazing technology has been proved to be a promising approach for joining tungsten carbide to tough metals to create high strength, tough and impact-resistant joint in the final assembly. In this research work, a dissimilar brazing of tungsten carbide (WC-Co) and cold work steel will be achieved using a new type of filler, a silver-copper near-eutectic alloy (BAg-8T) (Ag70Cu28Ti2). (BAg-8T) as a mixed alloy (eutectic and titanium) can melt/solidify completely in a very narrow temperature range (778 °C/800 °C), lower than any other existing brazing filler alloy; this will reduce the possibility of partial fastening while solidification. In addition, (BAg-8T) filler will act as the soft-iron gauze. Being soft and ductile metals, they will creep and absorb the movement due to differential contraction of the carbide and tool shank. Besides, they will improve the wetting on the carbide. In this research work, the effect of the joining parameters (brazing temperature and cobalt percentage in the tungsten carbide) on the mechanical properties and microstructure of the brazed joint will be investigated to determine the best joint performance.

Continuous Separation of Radionuclides from Contaminated Water by Shock Electrodialysis.

The increasing popularity of nuclear energy necessitates development of new methods to treat water that becomes contaminated with radioactive substances. Because this polluted water comprises several dissolved species (not all of which are radioactive), selective accumulation of the radionuclides is desirable to minimize the volume of nuclear waste and to facilitate its containment or disposal. In this article, we use shock electrodialysis to selectively, continuously, and efficiently remove cobalt and cesium from a feed of dissolved lithium, cobalt, cesium, and boric acid. This formulation models the contaminated water commonly found in light-water reactors and in other nuclear processes. In a three-pass process, a consistent trade-off is observed between the recovery of decontaminated water and the percentage of cobalt removed, which offers flexibility in operating the system. For example, 99.5% of cobalt can be removed with a water recovery of 43%, but up to 66% of the water can be recovered if deionization of cobalt is allowed to drop to 98.3%. In general, the energy consumed during this process (ranging between 1.76 and 4.8 kW h m-3) is low because only charged species are targeted and virtually no energy is expended removing boric acid, the most abundant species in solution.

Effect of cobalt addition on the morphology and mechanical properties of W–Ni–Cu–Co alloy

This paper investigates the performance of a tungsten (W)–nickel (Ni)–copper (Cu) heavy alloy with 0·5, 1·0, 1·5 and 2·0 wt% cobalt (Co) additions. The alloys are prepared through spark plasma sintering at a sintering temperature of 1400°C following a heating step of 100°C/min. The alloy with 0·5 wt% cobalt is observed to have good mechanical properties in comparison with other alloys. The density and hardness of the alloys follow a decreasing trend with an increase in cobalt addition. Subsequently, microstructural characteristics, such as contiguity, average grain size and matrix volume fraction, are measured and investigated, as they are found to affect the mechanical properties of the alloys. The average grain growth of the alloys varies around 13 µm. As the cobalt percentage is increased, tungsten–tungsten contiguity is observed to increase. The W–Ni–Cu–0·5Co alloy exhibits higher yield and tensile strength in comparison with other heavy tungsten alloys. The fracture surface analysis shows a predominantly tungsten grain cleavage fracture for 0·5 wt% cobalt alloy. The other alloys show more features of matrix interface failure and tungsten decohesion.

Effect of cobalt content on properties of graphene platelet (GPL)-cobalt(Co)-nickel(Ni) composite coating

In this paper, an investigation is reported on graphene platelet (GPL)—Cobalt (Co)-Nickel (Ni) coatings by electrochemical deposition. Graphene nanocomposites are a kind of high performance materials with excellent mechanical, magnetic, thermal, electrical, optical and biocompatibility properties. It has very important applications in electronic devices, batteries, compos-ite materials and photosensitive components. Electroplating graphene nanocomposites is a common process, but it is found that graphene deposited in the process of electrodeposition is less and easy to agglomerate. In order to solve this problem, this paper improves this situation by adding cobalt ions. By comparing the prepared composite materials with different cobalt co-ntents, it was found that the addition of cobalt ions promoted the deposition of graphene. Microstructures of the coatings are characterized using scanning electron microscope (SEM), electronic differential system (EDS), and x-ray diffraction (XRD). Magnetic properties were measured using a Vibrating Sample Magnetometer (VSM). The results show that with the increase of cobalt ion content in the plating solution, the weight percentage of cobalt in the composite increases gradually, and the de-position of GPLs on the surface of the material increases. GPLs and cobalt ions are uniformly deposited in the nickel matrix, and the average grain size of the nickel matrix is significantly reduced, the saturation magnetization (Ms) of the composite is improved, and the coercive force (Hc) and remanence (Mr) are gradually decreased. This study provides a new way to impro-ve the magnetic properties of the coating, and provides a reference for promoting the deposition of graphene.

Structural and Magnetic properties of Cobalt Ferrite (CoFe2O4) Nanoparticles by Sol-Gel Technique using Yeast

The aim of the present work is to synthesize cobalt ferrite nanoparticles by sol-gel technique using yeast. The source culture is prepared using yeast, carbon and nitrogen. Three samples are prepared by mixing the source culture with ferric nitrate (0.2 M) and cobalt nitrate (0.15, 0.2, 0.25M) and stirred for suitable duration to get the gel. The final product is heated at 600°C to get the cobalt ferrite nanopowder. Structural analysis reveals the cubic phase of cobalt ferrite nanoparticles with the peaks corresponding to the plane (220), (311), (400), (511) and (440) matches with the PDF data. The peaks are sharp showing the crystalline nature of the prepared samples. From the microstructural parameters calculated for the prominent peak (311) shows the average crystallite size is 44 nm. The lattice constant is found to be around 8.350 Å which is close to the bulk value of cobalt ferrite nanoparticle (8.373Å). The calculated X-ray density is more than their bulk counterpart and is attributed to the formation of pores throughout the synthesis method. FTIR analysis shows the existence of functional groups within the prepared sample. EDAX analysis shows the rise in the atomic weight percentage of cobalt with increase in weight proportion of cobalt nitrate. SEM analysis shows the surface morphology of the prepared sample and the ferromagnetic behavior of the cobalt ferrite nanoparticle is observed by VSM studies.

PSO–ANN-based prediction of cobalt leaching rate from waste lithium-ion batteries

Leaching is a complex solid–liquid reaction which has an important influence on the recovery efficiency of the spent lithium-ion batteries (LIBs). Therefore, it is of significant importance to utilize an appropriate technique to predict the effect of operating parameters on the optimized recovery rate. In the present study, a combined method of the artificial neural network (ANN) and particle swarm optimization algorithm (PSO) was used as a model to predict the leaching efficiency of cobalt from spent LIBs. To find the dependency of the leached percentage of cobalt on the operational parameters as model inputs, 42 repeatable numerous experiments are performed using H2SO4 in the presence of H2O2. It was found that the proposed model can be a useful technique in the demonstration of the nonlinear relationship between the leaching efficiency and the process parameters. The performance of PSO–ANN models was validated by statistical thresholds and compared with those of common ANN technique. Moreover, it was found that the pulp density of the leaching solution and the concentration of sulfuric acid were the most important reaction parameters of the spent LIBs recovery, respectively.

Magneto-electrodeposition of granular Co–Cu nanowire arrays

Cobalt-copper (Co–Cu) granular nanowire arrays were electrochemically prepared into Anodic Alumina Oxide (AAO) membranes. We demonstrate that the application of a magnetic field B (MF B) during the synthesis of nanowires leads to control their chemical and physical properties. XRD studies have shown polycrystalline nanowires. Their morphology and chemical composition were studied by scanning electron microscope (SEM) and energy dispersive x-ray spectrometry (EDXS). The results showed that the nanowire diameters vary between 200 and 240 nm. In addition, the magnetic field changes the elemental percentage of cobalt and copper into the membrane pores. The AFM images show that the magneto-electrodeposited sample have a higher surface roughness. SQUID studies indicate that the nanowires electrodeposited under MF B have a coercive field of 800 Oe and a squareness ratio of 0.31.

Synthesis and characterization complex Cobalt(II) with sulfadiazine

Complex of cobalt(II) with sulfadiazine has been synthesized in a ratio 6: 1 metal to ligand in methanol. The formation of a complex was characterized by a shift in the maximum wavelength (λmax) to the smaller wavelength (527 nm to 515 nm) which shows transitions 4T1g(F) → 4A2g dan 4T1g(F) → 4T1g (P). The percentage of cobalt in the complex measured by Atomic Absorption Spectrometer (AAS) showed the complex formula was Co(Sulfadiazine)3(NO3)2.(H2O)n (n = 2, 3, 4). The conductivity measurement indicated that the complex is 2 to 1 electrolyte. Thermal analysis with Differential Thermal Analyzer (DTA) indicates the presence of H2O in the complex. The formula of the complex was estimated as [Co(Sulfadiazine)3(H2O)3](NO3)2.H2O. The complex was paramagnetic with μeff = 4.59 – 4.97 BM in high spin state. Infrared spectra show a shift in the absorption of primary NH2 functional groups indicating that the functional group was coordinated to the central Co2+ atom monodentically. The geometry of the complex was probably octahedral.

Enhanced degradation of tetracycline hydrochloride using photocatalysis and sulfate radical-based oxidation processes by Co/BiVO4 composites

The Co/BiVO4 composites were prepared by wet impregnation method and used to combine photocatalysis and sulfate radical-based oxidation processes for degradation of tetracycline hydrochloride. The effect factors including the mass percentage of cobalt and peroxymonosulfate (PMS) concentration were investigated in detail. The tetracycline hydrochloride solution with an initial concentration of 40 mg/L could be completely degraded within only 25 min in Co/BiVO4+Vis + PMS system. By cyclic degradation experiment, as-prepared Co/BiVO4 composites had good reusability and stability. Free radicals quenching experiment indicated that SO4− and OH played an important role for degradation of tetracycline hydrochloride. We confirmed the redox cycle of Co2+/Co3+ during the PMS activation process by X-ray photoelectron spectroscopy. Based on the above results, a possible enhanced reaction mechanism was proposed.

Diamond Thin Film Coating on WC Substrate by HFCVD Method using Different Seeding Powders and Its Characterization

The formation of diamond thin solid film is studied by Hot Filament Chemical Vapor Deposition (HFCVD) by using different seeding powders on WC substrate. Here, we have deposited microcrystalline diamond (MCD) on SPUN cemented carbide (WC-Co) cutting tool insert using conventional HFCVD technique. The substrates were ultrasonically seeded with titanium, tungsten, molybdenum, diamond, combined diamond and tungsten powder at the same operation parameters to observe the difference in the growth of diamond by different seeding. Nucleation of diamond coating was studied after 40 minutes of coating with seeded substrate. The physical characteristics were studied by X-ray Diffraction (XRD).The Scanning Electron Microscope (SEM) was used to study the surface morphology. The diamond purity was studied with the help of Raman spectroscopy (RS). Reduction of cobalt percentage before and after pretreatment was studied by Energy Dispersive Spectroscopy (EDS). A very dense and uniform coating was deposited on the diamond powder seeded substrate. The nucleation density was found to be highest in diamond powder when compared with molybdenum and tungsten powder individually, because in initial stage the deposited material contains more sp2 content as compared to sp3 content. By using diamond and tungsten mixed powder the coating was uniform rather in case of only tungsten powder coating the discrete crystals were formed.

Improvement of magnetic solvent extraction using functionalized silica-coated Fe3O4 nanoparticles

The application of hydrophobic magnetic nanoparticles functionalized with long carbon chain molecules, such as oleic acid, in the solvent extraction process results in a faster phase disengagement and does not affect the extraction and stripping percentages of cobalt with Cyanex 272, as has been reported in previous studies. However, the chemical stability of this organic phase is limited by its applicability only in contact with aqueous solutions of pH ≥ 2.0. Aiming to overcome such an operational constraint, this study proposed the use of nanoparticles coated with silica and functionalized with a long carbon-chain silane (OTS) in the solvent extraction process. Due to the silica-layer coating of the magnetic core of magnetite and maghemite, such nanoparticles became stable when in contact with aqueous solutions of high acidity of up to 2 mol/L. The proposed nanoparticles were characterized by transmission electron microscopy, X-ray diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy, and magnetic analysis. Their effect on the solvent extraction of cobalt with Cyanex 272 was investigated using magnetic fluids with different concentrations (0, 10, 20, and 30 g/L of magnetic nanoparticles). It was also observed that, under the conditions studied in this work, the presence of these magnetic nanoparticles did not interfere in the efficiency of metal extraction and stripping. Moreover, the time for the phase disengagement can be reduced by a factor of 25 when compared to the process without magnetic nanoparticles.

Peculiarities of nutrient digestibility of rations of pregnant ewes with the additional introduction of cobalt

The results of studies on the effect of various doses of cobalt with an optimized level of sulfur in rations of Askanian meat-and-wool ewes on digestibility of nutrients of consumed feed and digestibility of the studied mineral elements are presented. It was established that the level of nutrient digestibility of rations was higher in ewes of the experimental groups, which, to the generally accepted norm, were additionally injected with cobalt chloride in the amount of 10 %, which was equal 0.825 mg, 20 % – 0.900 mg, and 30 % – 0.975 mg per head per day . As a result of the conducted research, it was found that the ewes of the second experimental group differed in the highest indices of digestibility of nutrients of the ration, which increased the rate of cobalt by 10 %. The additional introduction of 20 % and 30 % cobalt to the basic ration did not contribute to a further increase in the digestibility factors of nutrients in the body of ewes of the experimental groups. The research has shown that the uptake of cobalt by experimental ewes increased as this element increased in the rations. Thus, 0.31 mg of cobalt was assimilated by the ewes of the second experimental group, which is 0.06 mg or 20.0 % higher compared to the control group; to the third-group of ewes by 0.07 mg or 28.0 % and to the fourth-group ewes by 0,08 mg or 32.0 % compared with analogues of the control group. However, when calculating these indicators in relative terms, it was established that the highest percentage of cobalt absorbed from that received was in the ewes of the second experimental group. Their advantage relative to the control group was 4.60 % (P <0.01), and III and IV experimental groups – 2.11 and 0.19 absolute percent.

Separation of cobalt and nickel in leach solutions of spent nickel-metal hydride batteries using aqueous two-phase systems (ATPS)

This paper presents the use of an aqueous two-phase system (ATPS) as an alternative to liquid–liquid solvent extraction for the selective removal of cobalt and nickel from nickel metal hydride batteries (NiMH). The optimized extraction conditions were determined with a leach liquor obtained from the NiMH battery residue as a matrix. The effect of several key variables on the metal extraction was evaluated: (i) extractant nature, (ii) pH, (iii) the ATPS-forming electrolyte, (iv) the ATPS-forming copolymer, (v) the ratio between the top and bottom phases, and (vi) liquor dilution. Process efficiency was measured by the percentage of cobalt (%ECo) and nickel (%ENi) extraction and the separation factor between these metallic ions (βCo/Ni). The highest cobalt extraction percentages were obtained for ATPS formed by L64 + Na2SO4 + H2O at pH 5.00, using 1-nitroso 2-naphtol (1N2N) extractant and a liquor dilution factor of 35. At these conditions, %ECo and %ENi were 99.18% and 1.29%, respectively, and βCo/Ni reached 9339 after three successive extraction steps.

A novel predictive model for estimation of cobalt leaching from waste Li-ion batteries: Application of genetic programming for design

Leaching process is one of the most influential steps during waste lithium-ion batteries (LIBs) recycling. Therefore, the employment of beneficial reaction modeling strategies assists to distinguish and predict the behavior of operational parameters and optimized efficiency. In this study, a gene-expression programming (GEP), i.e., a new evolutionary computing approach, was applied for the prediction of cobalt leaching from waste LIBs using H2SO4 in the presence of H2O2. Several leaching experiments were carried out by consideration of the reagent concentration (Cr), the solid-liquid ratio (S/L), reaction temperature (Tr) and time (τr) as input parameters and leached cobalt percentage as output variable. The GEP-based models were able to predict the leaching of cobalt with a mean standard error (MSE) of less than 0.1 and mean R-square of 0.979. Results affirmed that the proposed model can be a powerful tool in prediction and generation of a mathematical expression for illustration of the relationship between the leaching reaction parameters and the leached percentage. Moreover, the sensitivity analysis showed that the sulfuric acid concentration and S/L ratio were the most influencing parameters on the cobalt leaching from the waste LIBs, respectively.

Mitigation of High Temperature Environments on Electrical Disconnects

Abstract The electrical interconnect is an essential component of most electrical system configurations. The ability of the interconnect interface to reliably transmit power and / or data throughout the system is critical to its overall performance. Degradation of the mechanical or electrical properties of the interface can reduce the system performance or in severe cases, make it inoperable. There are several factors which can inhibit the performance of the interconnect, one of most severe is long term exposure to elevated temperatures. This effect can also be accelerated when combined with other severe environmental conditions such as high vibration and physical shock, which are often found in down hole oil and gas well drilling applications. This type of exposure can significantly degrade the essential properties of a reliable electrical interface such as contact resistance, mechanical stability, and electrical isolation. This paper will present options for design features and material properties that can be incorporated into an interconnect design that will mitigate these adverse effects. Specifically, this paper addresses the material properties of the contact interface and its surface treatment, the mechanical and electrical properties of the insulating material, the robustness of the mating features and the contact retention system. Two key features of the contact interface that are discussed are the stability of its electrical resistance and the robustness of its mechanical retention. Long term exposure to high temperatures typically induces stress relaxation in the compliant members of the contact interface that are required to produce a stable, low resistance interface, while allowing for a high level of mate / unmate durability. Stress relaxation can also reduce the mechanical stability of the contact interface where metal or plastic retention features are utilized. In the case of retention through epoxy bonding, imparting thermal stress at the bonding surface can result in loss of adhesion and / or retention. The surface treatment of the contact interface has also been shown to be a contributing factor in its electrical stability in high temperature applications. Typically, the interface is plated with a hard gold over nickel finish, which provides a noble interface that is corrosion resistant, but with the hardness required to withstand many mate / unmate cycles. A small percentage of nickel or cobalt are typically alloyed with the gold to produce the required hardness. In most applications, it has minimal impact on the overall resistance of the contact interface. In high temperature applications, however, it can tend to diffuse through the gold to the contact interface. Since these materials have a higher resistivity, they can negatively affect the resistance of the interface. The impact of this effect is reviewed in this paper. Finally, results of the evaluations on high temperature insulating materials and bonding epoxies are presented in this paper. The mechanical and dielectric stability of the insulating materials and the adhesion properties of the epoxy used for contact retention were the primary concerns for their evaluation. The verification tests that included at temperature exposure were conducted at +260°C to simulate extreme use cases for most down hole applications.

Curing behaviour of unsaturated polyester resin and interfacial shear stress of sugar palm fibre

Studies on the effect of cobalt of unsaturated polyester resin and the effect of treated sugar palm fibre with sodium hydroxide on single fibre strength and interfacial shear strength (IFSS) are presented in this paper. 1% of methyl ethyl ketone peroxide was used as the initiator, while cobalt of variable percentages (0.05%, 0.1%, 0.2%, 0.4 %,0.6%, 0.8% and 1%)was used as the hardener. The effects on glass transition and exothermic reaction of unsaturated polyester were studied for post curing temperature determination using differential scanning calorimetry by heating the samples at 10oC/min heating rate from 30oC to 120oC with flowing of purge nitrogen gas atmosphere . For the single fibre test and IFSS, the treatment was carried out using sodium hydroxide solution with 1% concentration for one hour soaking time. Based on the optimisation percentage of cobalt, it was found that the higher the percentage of cobalt, the faster the sample tested to gel and cured. Treated sugar palm fibre exhibited better single fibre strength and IFSS between the matrices compared to untreated fibre due to the effectiveness of the alkali treatment. This can be attributed to the rearrangement of fibrils along the direction of tensile force and the removal of the coating layer and impurities after the alkaline treatment.

Investigating the effect of cobalt loading on thermal conductivity and hydrogen storage capacity of hollow glass microspheres (HGMs)

In present study, cobalt loaded hollow glass microspheres (HGMs) were fabricated from amber colored glass powder blended with cobalt nitrate hexahydrate salt, by flame spheroidisation method. The morphology of the samples was observed using field emission-scanning electron microscope (FE-SEM), environmental SEM (ESEM), high-resolution transmission electron microscopy (HRTEM), Fourier transform infrared spectroscopy and X-ray diffraction (XRD) techniques. The results showed that HGMs with surface coating of cobalt oxide can be successfully synthesized using this single step process. Effect of cobalt loading percentage (0-10%) in the glass feed on the formation of cobalt loaded HGMs were studied. A continuous thin coating of cobalt oxide on the HGMs surface was obtained when the cobalt content in the feed glass powder was up to 2%. Further increase of the cobalt in the feed glass led to uneven coating on the surface of HGMs. A clear cut diffraction pattern for crystalline CoO was observed at the thick patches observed on the HGMs samples with 10% loading of cobalt. The thermal conductivity of HGMs increased when the cobalt loading increased from 0 to 10 wt.%. The hydrogen storage experiments done on all the prepared samples at 200 °C and 10-bar pressure showed that the hydrogen storage capacity increased when the Co percentage in the sample increased from 0 to 2%. The percentage of cobalt was increased beyond 2 wt.% showed a decline in the hydrogen storage capacity.