Electrophoresis Deposition Research Articles

Construction of Bi2WO6/g-C3N4/Cu foam as 3D Z-scheme photocatalyst for photocatalytic CO2 reduction

Photocatalytic CO2 reduction to hydrocarbon fuels represents a promising solution to CO2 emission challenges. However, photocatalytic CO2 reduction systems face hurdles in practical utilization for the low efficiency of photocatalysts and challenge in catalyst immobilization. Therefore, a novel monolithic three-dimensional Z-scheme photocatalyst was synthesized by fabricating Bi2WO6/g-C3N4 heterojunction on Cu foam substrate (Bi2WO6/g-C3N4/Cu foam) via thermal polymerization and electrophoresis deposition. A series of characterization results, including X-ray diffraction, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy and N2 adsorption–desorption, illustrate the crystalline properties, pore structure, and morphology of the composite photocatalyst. Consequently, Bi2WO6/g-C3N4/Cu foam achieved CO production yield of 33.84 μmol/g cat under visible light illumination for 6 h and retained 96.2 % of initial photocatalytic activity after 30 h of reaction. UV–Vis diffuse reflection spectra, photoluminescence spectra and photoelectrochemical analysis was involved to reveal the mechanism of the photocatalytic activity of composite photocatalyst.The synergistic effect of the Z-scheme mechanism and the hierarchical macroporous structure improves the light absorption, light-induced electron-hole pair separation, and charge transmission. This catalyst construction strategy provides a viable approach for facilitating practical photocatalytic CO2 reduction.

Deposition voltages on the phase evolutions, microstructures, and oxidation behaviors of thermal-resistance Glass-MoSi2-SiC coating

ABSTRACT Due to the high oxidation activities at high temperatures, traditional SiC coating was difficult to act as an antioxidant material for ages. In this case, the multilayered Glass-MoSi2-SiC coating was fabricated on the C/C substrate, combined with hydrothermal electrophoresis deposition and simple embedding process. It was found that the composite obtained at 10 V performed outstanding combinations of oxidation resistance and thermal shock resistance properties. The weight loss of this Glass-MoSi2-SiC-C/C composite was only 0.99% after 212 h oxidation at 1773 K. After thermal shock for 130 times, the mass was just 0.05% lower than that of the initial. These excellent heat-resistant performances were much better than those in similar reports, which was attributed to the suitable coating composition and dense interlayer structure. As oxidized at 1773 K, the in-situ SiO2 phases had a self-healing ability to fill micropores and microcracks to protect the structure. The structure failure was related to SiO2 volatilization. This study emphasized the importance of simple techniques in the thermal-resistance coating fields at multiple length scales.

Effect of Time and Voltage on the Electrophoresis Deposition of Zinc Oxide Thin Films for Photovoltaic Applications

Electrophoretic deposition is a straightforward, environmentally friendly, and cost-effective technique for depositing and synthesizing nanomaterials, particularly nanofilms of semiconductors. Key parameters in electrophoresis include deposition time and voltage. Zinc oxide, a semiconductor of significant interest in solar energy research, possesses favorable characteristics, notably, a band gap value of approximately 3.33 eV. In the realm of dye-sensitized solar cells, which represent the third generation of solar cells, zinc oxide has emerged as a compelling choice for a photoanode. This study focused on depositing thin films of zinc oxide through electrophoresis and applying them as photoanodes in dye solar cells. The results demonstrated that the electrodeposited films exhibited good reflectance in the visible spectrum (~60–90%), a band gap energy of 3.28 eV, and an incident photon conversion efficiency of approximately 4.48% for the electrodeposited film at 80 V for 5 min.

Experimental study of repairing rust-cracked reinforced concrete by electrophoresis deposition method

The rusting and cracking of reinforced concrete structures cost billions of dollars around the world every year, and there is a lack of targeted repair methods. In this study, we first put forward an electrophoretic deposition repair method using a high-performance colloid solution containing water-based cationic epoxy resin. The effect of electrophoretic deposition on rust-cracked reinforced concrete was studied. Then, the mesoscopic and microscopic morphologies of the repaired concrete surface, cracks, and defects at the interface of reinforced concrete were examined. Finally, the mechanism of electrodeposition was discussed, and the related reactions were summarized (ionization, electrolysis, electrophoresis, electrodeposition, electroosmosis, and curing reaction). The results show that electrophoretic deposition successfully increased the internal compactness, unconfined compressive strength, and split tensile strength of reinforced concrete, while greatly reducing the water absorption and the accelerated carbonation depth.

A Review of Freeze Casting: Preparation Process, Modified Methods, and Development Tendency

Abstract: Fabricating materials with nacre-like structure have received considerable attention as it shows an excellent combination of mechanical strength and toughness. A considerable number of researchers have reported the preparation method of bionic structure, such as layer-by-layer assembly, vacuum filtration, coextrusion assembly, electrophoresis deposition, water-evaporation-induced assembly, 3D printing, and freeze casting. Compared with other techniques, freeze casting, known as ice templating, is an environmentally friendly, prolongable, and potential method, so it has been rapidly developing and widely researched in recent decades. In this review, the front six methods with their benefits and limitations are briefly introduced. Then, the freeze casting technique with the preparation process and modified technique is emphatically analyzed. Finally, the future tendencies of materials application and technique application are discussed. Freeze casting consists of suspension preparation, solidification, sublimation, and post-treatment processes. The mechanism and influence of parameters during suspension preparation and solidification processes are principally discussed. It must be pointed out that the performance and structure of samples are closely related to the model and external force. Besides, the adjustable process parameters of freezing casting are a strong guarantee of obtaining the target product. The purpose of this review is to promote freeze casting workers to understand the influence of parameters and enlighten them in new experimental designs.

Corrosion Inhibition Efficiency Investigation of Yttrium Oxide Nanoparticles Coated on Carbon Steel Alloy

Metal oxide nanoparticles demonstrate uniqueness in various technical applications due to their suitable physiochemical properties. In particular, yttrium oxide nanoparticle(Y2O3NPs) is familiar for technical applications because of its higher dielectric constant and thermal stability. It is widely used as a host material for a variety of rare-earth dopants, biological imaging, and photodynamic therapies. In this investigation, yttrium oxide nanoparticles (Y2O3NPs) was used as an ecofriendly corrosion inhibitor through the use of scanning electron microscopy (SEM), Fourier transforms infrared spectroscopy (FT-IR), UV-Visible spectroscopy, X-ray diffraction (XRD), and energy dispersive X-ray spectroscopy(EDX), the physico-chemical characterization of Y2O3NPs was examined. The primary characteristic peak of YOY at 565 cm-1, which indicates the synthesis of nanoparticles, is seen in the FT-IR spectra. The XRD pattern showed that a single phase cubic structure of YONPs with an Ia-3 space group had formed. SEM was used to examine the surface morphology. The composition of Yttrium and oxygen in Y2O3NPs was determined to be 78.74% and 21.26%, respectively, according to the EDX results. The anticorrosive behavior was tested by polarization curve in 18.204% CaCl2 solution at five temperatures in the range 293- 313 K. Various concentrations 0.15 0.26 and 0.37 of N Y2O3NPs coating on the carbon steel surface were applied using the electrophoresis deposition method. The obtained results indicated that Y2O3NPs formed a protective film acts as a physical barrier for the protection of steel alloy. Additionally, corrosion protection efficiency values of 0.26 N Y2O3NPs coating were superior to that of 0.15 and 0.37 N Y2O3NPs coating, respectively.

Electrophoresis deposition of Au‐nanoparticles on FTO electrode for As(III) detection

AbstractGold nanoparticles (AuNPs) were synthesized via redox reaction, using EDTA as a protecting and reducing agent, with HAuCl4 as precursor and seed solution. The appropriate reaction condition was found out, with the ratio of EDTA:HAuCl4 = 10:1, 40 μL of seed solution and stirring time of 5 minutes. The UV‐Vis spectroscopy observed that the appearance of two absorption peaks were at 574 and 755.5 nm with the average size of AuNPs was 64.5 nm, the zeta potential was positive. The synthesized AuNPs were deposited on FTO electrode by electrophoresis deposition. The results of solid UV‐Vis and SEM images showed that the spherical AuNPs ranging from 40 to 60 nm were deposited onto FTO to fabricate the AuNPs/FTO electrodes. The electrochemical activity of AuNPs/FTO were investigated based on the redox reaction of hydroquinone; the CV results showed the electrode with applied potential at 20 V for 60 minutes has the superior performance. The analysis of As(III) were conducted by AS‐SWV technique. The results showed that AuNPs/FTO electrode enable to detect As(III) at the concentrations higher than 5 ppb that is suitable for the WHO standard of domestic water.

Graphene/hydroxyapatite coating deposit on titanium alloys for implant application.

Titanium (Ti) implants are widely used in medicine. Meanwhile, surface modification of Ti can strengthen the osseointegration of implants. In this study, we modified Ti implant surfaces, which was coated with GO, HA, HA-2wt%GO and HA-5wt%GO via electrophoresis deposition, to investigate their mechanisms and biological activity. Uncoated Ti was used as the control. Further, we examined the biological behavior and osteogenic performance of mouse bone marrow mesenchymal stem cells (BMSCs) cultured on coatings in vitro. We found that the HA-GO nanocomposite coating improved the roughness and hydrophilicity of the Ti surface. Compared with the uncoated Ti or Ti modified by HA or GO alone, cell adhesion and diffusion were enhanced on HA-GO-modified Ti surfaces. In addition, the proliferation and osteogenic differentiation of BMSCs in vitro were significantly improved on HA-GO-modified surfaces, whereas osteogenesis-related gene expression and alkaline phosphatase activity were slightly enhanced. Furthermore, we noted that bone regeneration was improved in the HA-2wt%GO group in vivo. Thus, the HA-2wt%GO nanocomposite coating might have potential applications in the field of dental implants.

Improvement of antibacterial, anti-inflammatory, and osteogenic properties of OGP loaded Co-MOF coating on titanium implants for advanced osseointegration

The bacterial infection, especially for methicillin-resistant Staphylococcus aureus (MRSA), and the associated severe inflammatory response could extremely limit the crosstalk of RAW264.7 cells and mesenchymal stem cells (MSCs) and lead to the undesirable osseointegration of peri‑implants. It is highly demanded to modify the surface of titanium (Ti) implant to improve its anti-bacterial and anti-inflammatory properties and facilitate its disabled osseointegration. Herein, in our study, a multifunctional coating of zeolitic imidazolate frameworks-67 encapsulated osteogenic growth peptide (OGP) (ZO) was fabricated on titanium dioxide nanotubes (TNT) substrates (TNT-ZO) via the electrophoresis deposition (EPD) approach. The TNT-ZO substrates exhibited excellent antibacterial activity indicated by the reactive oxygen species (ROS) generation, outer membrane (OM) and inner membrane (IM) permeabilization change, adenosine triphosphate (ATP) decrease, and intracellular compounds (DNA/RNA) leakage. Importantly, the regulation effects of TNT-ZO coating modified titanium substrates on the RAW264.7-MSCs crosstalk could induce the anti-inflammatory and osteogenic microenvironment via multiple paracrine signaling of Runx2, BMP2, VEGF, and TGF-β1. The promoted effects of coating structure were investigated in vivo, including antibacterial effect, osteogenic differentiation of mesenchymal stem cells, and anti-inflammation of RAW264.7 cells, as well as infected bone regeneration and repair in bone defect transplantation model. The results demonstrated that MRSA was effectively eliminated by the hydrolysis of ZIF-67 nanoparticles on TNT-ZO substrates. Furthermore, the excellent osseointegration of peri‑implants was realized simultaneously by modulating the crosstalk of RAW264.7-MSCs. This study could provide a novel approach to designing a multifunctional coating on the Ti implants for infected bone regeneration in orthopedic applications.

Titanium Membranes with Hydroxyapatite/Titania Bioactive Ceramic Coatings: Characterization and In Vivo Biocompatibility Testing.

Titanium membranes and meshes are used for the repair of trauma, tumors, and hernia in dentistry and maxillofacial and abdominal surgery. But such membranes demonstrate the limited effectiveness of integration in recipients due to their bioinertness. In this study, we prepared titania oxide (by microarc oxidation) and/or HAp (by electrophoresis deposition) coatings with alginate soaking. We used annealing at 700 °C for 2.5 h for HAp crystallinity increasing with achievement of an acceptable Ca2+ release rate. The feedstock HAp and prepared coatings were characterized by X-ray diffraction, IR spectroscopy, electron and optical confocal microscopy, and thermal analysis, as well as the in vitro study of solubility in saline and in vivo tests with the animal model of subcutaneous implantation (with Wistar rats). Biocompatible compounds were found for all deposited coatings. We noted that the best biological response was detected for the annealed Ca-P/TiO2 bilayer with alginate binding. In this case, the coating crystallinity was ≈40.5-50.0%. The Ca2+ release rate was 2.042 ± 0.058%/mm2 at 168 h after immersion in saline. Thin and mature tissue capsules with minimal inflammation and vascularization were found in histological sections. We did not detect any unwanted responses around the implants, including inflammation infiltration, suppuration, bacterial infections, tissue lyses, and, finally, implant rejection. This information is expected to be useful for understanding the properties of bioactive ceramic coatings and improving the quality of medical care in dentistry and maxillofacial surgery and other applications of titanium membranes in medicine.

Mechanical Characteristics and Bioactivity of Nanocomposite Hydroxyapatite/Collagen Coated Titanium for Bone Tissue Engineering.

In the present study, we have analyzed the mechanical characteristics and bioactivity of titanium coating with hydroxyapatite/bovine collagen. Hydroxyapatite (HAp) was synthesized from a Pinctada maxima shell and has a stoichiometry (Ca/P) of 1.72 and a crystallinity of 92%, suitable for coating materials according to ISO and Food and Drug Administration (FDA) standards. Titanium (Ti) substrate coatings were fabricated at HAp concentrations of 1% (Ti/HAp-1) and 3% (Ti/HAp-3) and a bovine collagen concentration of 1% (Ti/HAp/Coll) by the electrophoresis deposition (EPD) method. The compressive strength of Ti/HAp-1 and Ti/HAp-3 was 87.28 and 86.19 MPa, respectively, and it increased significantly regarding the control/uncoated Ti (46.71 MPa). Furthermore, the Ti/HAp-coll (69.33 MPa) has lower compressive strength due to collagen substitution (1%). The bioactivity of Ti substrates after the immersion into simulated body fluids (SBF) for 3-10 days showed a high apatite growth (Ca2+ and PO43-), according to XRD, FTIR, and SEM-EDS results, significantly on the Ti/HAp-coll.

Effect of electrochemistry modification on the macromolecular, structural, and rheological characteristics of citrus peel pectin

Electrochemical techniques including electrophoresis, electrolysis, and electrophoretic deposition have been widely used in the construction and modification of biomacromolecules such as proteins and chitosan. In this study, the negatively charged citrus peel pectin (CPP) was used to explore its modification by electrochemistry. The electrochemically modified CPPs were successfully fabricated by an H-type cell in anodic and cathodic regions at 25V for 1, 2, 4 and 8h. After 8h, the pH of anodic region was reduced from 3.62 to 1.76, whereas the cathode region was elevated to 11.61. Oxidation reduction potential (ORP) of anodic region was increased from 316 to 463 mV, whereas the cathode region was decreased to −273 mV. Molecular weight distribution (Mw), neutral sugar (NS), degree of methylation (DM) and acetylation (DA), Fourier transform-infrared spectra (FT-IR), and thermogravimetric analysis (TGA) were examined to investigate the structure changes of CPPs. The results showed the Mw, NS, DM and DA of modified CPPs decreased, while the content of galacturonic acid (GalA) increased. The hydrogels modified by cathodic region displayed superior gel characteristics, while hydrogels modified by anodic region demonstrated effective antibacterial properties. The correlation analysis demonstrated storage (G′) and loss modulus (G″) values of hydrogels were negatively correlated with DM and Mw. Our results provide valuable insight into modification of pectins by electrochemistry, which may be applied in food and pharmaceutical applications.

Preparation and corrosion resistance of epoxy resin coating for bonded NdFeB magnet

The epoxy resin (ER) coatings were coated on ring-shaped bonded NdFeB magnet (RSM) using air spraying and cathodic electrophoresis deposition processes. The morphologies and microstructures of the bare RSM (B-RSM), sprayed ER/RSM (S-ER/RSM) and electrophoretic ER/RSM (E-ER/RSM) were observed using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), 3D laser confocal scanning microscopy (LSCM) and fourier infrared spectrometer (FTIR). The corrosion behaviors of the ER coatings were analyzed by potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and neutral salt spray test (NSS). The results showed that ER coatings covered the pores of B-RSM well and played a good sealing role. Moreover, E-ER/RSM had a more uniform film layer and better surface leveling than S-ER/RSM. Compared with B-RSM and S-ER/RSM, the corrosion current density (Icorr) of E-ER/RSM reached 1.904 × 10−5 A/cm2, one order of magnitude lower than that of B-RSM (1.033 × 10−4 A/cm2) and about twice lower than that of S-ER/RSM (4.728 × 10−5 A/cm2). The value of charge transfer resistance (Rct) of E-ER/RSM is 1671.6 Ω·cm2, which is higher than that of both B-RSM (236.96 Ω·cm2) and S-ER/RSM (425.46 Ω·cm2). The NSS time of E-ER/RSM reached 144 h, longer than that of S-ER/RSM (72 h) and B-RSM (24 h). The corrosion resistance of bonded NdFeB magnets was improved due to the good shielding properties and physical barrier effect of the ER coatings. In addition, the corrosion mechanisms of ER coatings were discussed in detail.

Synthesis and applications of graphene and graphene-based nanocomposites: Conventional to artificial intelligence approaches

Recent advances in graphene research have enabled the utilization of its nanocomposites for numerous energy-based and environmental applications. Recently, the advancement in graphene-based polymer nanocomposites has received much attention with special emphasis on synthesis and application. Graphene-based nanocomposites show astonishing electrical, mechanical, chemical, and thermal characteristics. Graphene nanocomposites (GNCs) are synthesized using a variety of methods, including covalent and non-covalent methods, a chemical-based deposition approach, hydrothermal growth, electrophoresis deposition, and physical deposition. Chemical methods are the most viable route for producing graphene in small quantities at low temperatures. The technique can also produce graphene films on a variety of substrate materials. The use of artificial intelligence (AI) for the synthesis of AI-created nanoparticles has recently received a lot of attention. These nanocomposite materials have excellent applications in the environmental, energy, and agricultural sectors. Due to high carrier mobility, graphene-based materials enhance the photocatalytic performance of semiconductor materials. Similarly, these materials have high potential for pollutant removal, especially heavy metals, due to their high surface area. This article highlights the synthesis of graphene-based nanocomposites with special reference to harnessing the power of modern AI tools to better understand GNC material properties and the way this knowledge can be used for its better applications in the development of a sustainable future.

Enhanced Optical and Ragged Metamaterials Properties of Silver Silica Nanocomposite Thin Film via Sol-Gel and Electrophoresis Deposition Technique

Various filling fractions of silver silica nanocomposites (Ag-SiO2 NC) were successfully synthesized via sol-gel technique and deposited onto indium tin oxide via electrophoretic deposition (EPD). Ag-SiO2 NC was investigated using X-ray diffraction, FTIR spectroscopy, Uv-vis and transmission electron microscopy. The XRD and Uv-vis results revealed that Ag-SiO2 NC is stable with a filling fraction of 0.6 in the dielectric medium with excellent absorption peak. Spectroscopy Ellipsometry shows that the effective permittivity and refractive index obtained from this filling fraction are -0.88 and 0.90, respectively. We discovered a ragged of metamaterial properties at negative permittivity.

Carbon nitride prepared through a combined strategy of electrophoresis and vapor deposition

Photoelectrochemical water splitting converts solar energy into clean hydrogen fuel. In this system, the preparation of high-quality photoanodes is essential for achieving efficient solar hydrolysis. Polymeric carbon nitride has emerged as a promising photocatalyst for solar water splitting due to its visible light absorption, suitable band edge positions and good chemical stability. However, considerable difficulties have been encountered in the preparation of robust and well-bonded carbon nitride films on conductive substrates. Herein, a combined strategy of electrophoresis and vapor deposition results in robust and high-performing carbon nitride film photoelectrodes with good bonding on substrates, suitable thickness for light absorption and enhanced charge separation and transfer abilities. The unique structure of the photoanode thus facilitates the oxidation of water and leads to an optimal photocurrent density of approximately 120 μA/cm2 at 1.23 VRHE. This work provides new insights for the preparation of polymeric carbon nitride film photoelectrodes, promoting the developments of photoelectric and photoelectrochemical applications based on carbon nitride.

Optimization of HNT nanoparticle distribution based on EPD process in epoxy–CFRP composites

There are numerous methods for reinforcing laminate composites using nanoadditives. However, the random dispersion of nanoparticles in polymer resins leads to critical defects owing to excessive dispersion. This study investigated a method of depositing halloysite nanotubes (HNTs) on a carbon fabric surface via electrophoresis deposition (EPD) for reinforcing the through-thickness strength of carbon fiber-reinforced plastic (CFRP) composites. The voltage during the EPD process was set as 6–12 V, which is the working range for nanoparticles during EPD. In addition, CFRPs were fabricated from modified carbon fabrics using vacuum-assisted resin transfer molding. The optimum voltage was determined as 6 V. At higher voltages, the mechanical properties deteriorated owing to the distribution of HNTs and damage to the fibers. The performance of the EPD-modified CFRPs was better than that of neat CFRPs. The highest strength was observed at 0.7 wt.% HNTs and 6 V, which indicated the feasibility of the EPD process and a well-dispersed morphology. The strong interaction of HNTs with carbon fabric influences the through-thickness mechanical properties of CFRP composites.

Electrochemically Fabricated SrGa2S4:Eu/ZnO-Vertical Nanowire Bilayer Scintillator for X-ray Imaging

Scintillators, which convert high-energy rays such as X-rays and positrons into visible and ultraviolet light, are incorporated as radiation detectors in X-ray computer tomography (X-ray CT) and positron emission tomography (PET), which system performances highly depends on the characteristics of the scintillator used. In this study, SrGa2S4:Eu/ZnO vertical nanowires (ZnO-vnws) bilayer scintillators were fabricated by electrodeposition of ZnO-vnws followed by electrophoresis deposition of SrGa2S4:Eu particles, and their structure, optical properties, and scintillator characteristics were evaluated. The ZnO-vnws were composed of vertically aligned ZnO nanowires with an excellent (001) out-of-plane orientation, and the SrGa2S4:Eu layer was composed of particles adhered to the ZnO-vnws. The SrGa2S4:Eu/ZnO-vnws bilayer scintillators emitted visible light at a wavelength of 533 nm with a lifetime of 0.389 μs and functioned as a scintillator for X-ray irradiation. The resolution and luminescence intensity of the SrGa2S4:Eu/ZnO-vnws bilayer scintillators were improved by the introduction of the ZnO-vnws layer, when compared with those of the ZnO-vnws-free-SrGa2S4:Eu layer, when the thickness ratio of SrGa2S4:Eu layer to ZnO-nws length were 1.1 ∼1.3. The SrGa2S4:Eu/ZnO-vnws bilayer scintillator revealed a spatial resolution of 6.8 μm, which was slightly larger than 5.4 μm of a ready-made LuAG single-crystal scintillator.

Preparation and properties of polyamido-amine dendrimer/polyurushiol composite coatings by stepwise electrophoresis deposition

The dendritic polyamido-amine/urushiol composite coatings were prepared by an efficient, controllable, green and convenient method via two steps of electrophoresis deposition. Under optimal mass concentration (6.8 wt%), the urushiol particles in the electrophoretic solution remained excellent dispersion state and uniform size distribution. In the first-step of electrooxidation polymerization of urushiol, the unsaturated side chains were successfully crosslinked and deposited on the surface of the anode to form a coating. In the second-step of the electrophoresis deposition, polyamido-amine dendrimers were crosslinked with urushiol molecules to produce the urushiol Schiff base compounds. Composite coatings contained compact and uniform structure and showed better thermal stability compared with unmodified urushiol coatings. In addition, the hardness, impact resistance, flexibility and adhesion were remarkably strengthened. Moreover, the medium resistance was also significantly improved.

Fabrication and performance of mini SiC/SiC composites with an electrophoresis-deposited BN fiber/matrix interphase

The feasibility of fabricating a BN matrix/fiber interphase of SiC/SiC composites via electrophoresis deposition (EPD) was investigated based on the simplicity and non-destructiveness of the process and the excellent interfacial modification effects of BN. The BN suspension and SiC fiber surface properties were both adjusted to generate suitable conditions for the EPD process of the BN interphase. Next, the deposition dynamics and mechanism were studied under different deposition voltages and time, and the relationship between the deposition morphology of the BN interphase and mechanical properties of the fabricated mini SiC/SiC composites were also discussed. After oxidation at high temperature (600–1000 ℃), the mechanical properties of the mini SiC/SiC composites were studied to verify the oxidation resistance effect of the EPD-deposited BN interphase, whose oxidation resistance mechanism was briefly analyzed as well.