Induction vs. laser heating: A comparative study on innovative electrode drying technologies on pilot-scale

A Full-Range ZVS Comprehensive Control Strategy for Dual-Port LLLC Induction Heating System

Electromagnetic confinement in Pt/Ni foam: Accelerating oxygen circulation to enhance low-temperature toluene oxidation.

Smith IHHOGA PID temperature control strategy for electromagnetic induction heating system with waste wind consumption

Corrigendum to “Shear failure behavior of the interface between asphalt mixture and ice layer by electromagnetic induction heating” [Cold Regions Science and Technology, 240 (2025) 104627

The chemical industry faces increasing pressure to decarbonize due to its high energy intensity and substantial greenhouse gas emissions. Electrification, replacing fossil fuel–based process heat with renewable electricity, is a key pathway toward sustainable chemical manufacturing. This review outlines recent advances in electrified chemical conversion technologies, categorized into direct (e.g., resistive, inductive, microwave, plasma) and indirect (e.g., electricity-derived hydrogen or syngas) approaches. Their principles, heat and mass transfer characteristics, advantages, limitations, and scalability are discussed. Emerging methods such as microwave-initiated plastic depolymerization, programmable heating and quenching for methane conversion, and inductive heating for hydrogen release from liquid organic hydrogen carriers are highlighted for their selectivity and energy efficiency. Realizing the full potential of electrification requires convergence across materials science, electrical engineering, and reaction engineering. This review provides a framework for evaluating the readiness, implementation barriers, and trade-offs in performance, economics, and emissions of electrified chemical technologies.

Railway turnouts are highly susceptible to snow and ice accumulation during winter, which can cause malfunctions, resulting in train delays or, in extreme cases, derailments with potential casualties. To mitigate these risks, resistive heating (RH) systems using nichrome wires have traditionally been employed. However, these systems suffer from slow heat transfer and high power consumption. To address these limitations, this article proposes an induction heating (IH) system designed for rapid thermal response and improved electrical and thermal efficiency. The proposed system comprises a power conversion unit featuring a boost power factor correction (PFC) stage and a high-frequency resonant inverter, along with an improved IH coil. An experiment in real snowfall demonstrates the IH system’s fast heat-up capability, effective snow cover removal, and enhanced energy efficiency compared to conventional methods.

High‐frequency induction sintering has instantaneous heating characteristics, which can reduce the sintering time and inhibit the grain growth. However, due to its nonuniform sintering temperature, it is seldom employed in the sintering of high‐performance materials. The electromagnetic–thermal‐coupled fields in high‐frequency induction heating are analyzed through finite element modeling. The results demonstrate that the skin effect induces a disparity in heating rates between the inner and outer layers of graphite mold, ultimately compromising the uniformity of material properties in the sintered bodies. According to the simulation results, a new ultrasound‐assisted pressure‐coupled high‐frequency induction sintering system is designed and built, and sintering test is carried out with CoCrFeNiMo high‐entropy alloy with poor uniformity. The results indicate that under the conditions of a current intensity of 600 A, electromagnetic frequency of 50 kHz, ultrasonic power of 80%, and constant pressure of 25 MPa, the application of ultrasonic‐assisted pressing significantly enhances the microstructural uniformity of CoCrFeNiMo high‐entropy alloy. Compared to conventional high‐frequency induction sintering, the relative density and Vickers hardness are improved by 12.4% and 37.9%, respectively. In the case of unchanged material composition, the improvement of hardness is due to the improvement of relative density.

Enhanced modeling of load behavior in high-efficiency dual-coil induction heating systems

A three-dimensional nonlinear mathematical model of induction heating for forming ball terminals using the Flip-Chip technology has been developed. The study was conducted at frequencies of 300, 732, and 900 kHz with a heating power of 20–100 W. The use of a ferrite core focusing the magnetic field and an eddy current concentrator allowed us to establish optimal thermal profiles for forming ball terminals for mounting integrated circuits with a heating rate of 2.0 to 5.5 °C/s. When analyzing the results obtained from the experiments, the option of locating the concentrator at the bottom of the board turned out to be optimal. In this case, heating the solder balls at the selected frequencies reached the melting temperature of the ball terminals of 230–250 °C, which is sufficient for their reflow.

Numerical simulation of higher order chemical reactive flow of ternary hybrid nanofluid across an extending cylinder with heat generation and induction effects

Effect of post-weld induction heat treatment on single-pass high-power laser-arc hybrid welded thick stainless steel clad plate: microstructure, mechanical properties and corrosion resistance

Induction Heating Appliances: Fifty Years of Technological Success: Paving the Path for Sustainable Homes

FEM simulation and experimental validation of a high-frequency induction heating system with COMSOL Multiphysics

Implant-associated infections caused by bacterial biofilmsremaina major clinical challenge, with high morbidity, often necessitatingprolonged antibiotic therapy or implant revision surgery. To addressthe need for noninvasive alternatives, we investigated the use ofalternating magnetic fields (AMFs) as a localized treatment modalityfor eradicating Staphylococcus aureus biofilms on titanium implant model surfaces. We demonstrate thatAMF exposure effectively removes biofilms and kills bacteria at moderatelyelevated temperatures on the implant. Importantly, our results demonstratethat the antimicrobial efficacy of AMF treatment is primarily notdue to heating. AMF vastly outperforms pure heating to the same temperaturesfor biofilm removal, despite inductive heating being the generallyproposed mechanism for AMF antimicrobial action. Based on complementaryimaging methods, we provide evidence that mechanical disruption, nota pure thermal effect, potentially driven by cavitation phenomenainduced by transient, localized high temperature gradients, removesbacterial biofilms from titanium surfaces during AMF exposure. However,this mechanism also compromises the integrity of adjacent mammaliancells; confluent layers of SaOS-2 osteoblast-like cells exhibitedactin cytoskeleton disintegration, membrane perforation, and a lossof viability even after brief AMF exposures. Our findings highlighta dual effect of AMF treatment: efficient biofilm removal is accompaniedby collateral cytotoxicity, which requires further mechanistic researchfor clinically safe and effective AMF-based infection management strategies.

This study investigates the influence of temperature measurement accuracy on tool failure mechanisms in industrial hot forging processes. Challenges related to extreme operational conditions, including high temperatures, limited access to measurement surfaces, and optical interferences, significantly hinder reliable data acquisition. Thermal imaging, pyrometry, thermocouples, and finite element modeling were employed to characterize temperature distributions in forging tools and billets. Analysis of multi-stage forging of stainless steel valve forgings revealed significant discrepancies between induction heater settings and actual billet surface temperatures, measured by thermal imaging. This thermal non-uniformity led to localized underheating and insufficient dissolution of hard inclusions, confirmed by dilatometric tests, resulting in billet jamming and premature tool failure. In slender bolt-type forgings, excessive or improperly controlled billet temperatures increased adhesion between the forging and tool surface, causing process resistance, billet sticking, and accelerated tool degradation. Additional challenges were noted in tool preheating, where non-uniform heating and inaccurate temperature assessment compromised early tool performance. Measurement errors associated with thermal imaging, particularly due to thermal reflections in robotic gripper monitoring, led to overestimated temperatures and overheating of gripping elements, impairing forging manipulation accuracy. The results emphasize that effective temperature measurement management, including cross-validation of methods, is crucial for assessing tool condition, enhancing process reliability, and preventing premature failures in hot forging operations.

Electromagnetic induction technology enables rapid, noncontact heating of conductive polymer nanocomposites, yet uncontrolled localized heating during this process can induce significant thermomechanical damage. Key influencing factors include nanoparticle dispersion, agglomeration, magnetic field frequency, and coil geometry. This study presents a multiphysics computational model to simulate the induction heating of acrylonitrile butadiene styrene reinforced with iron oxide (Fe3O4) nanoparticles, assessing the impact of these variables on heating efficiency. Numerical predictions were validated against experimental data at four Fe3O4 weight concentrations, demonstrating strong agreement and confirming a positive correlation between nanoparticle content and heating rate. Additionally, higher frequencies substantially enhanced heating, while nanoparticle agglomeration was found to promote localized overheating, posing a risk of material degradation. Although parameters such as particle size, coil design, and polymer positioning influenced heating rates, their effects were comparatively minor. The developed computational framework, experimentally validated, proves reliable and adaptable for modeling induction heating in diverse polymer nanocomposite systems.

Silicon carbide (SiC), a wide-band gap semiconductor,is essentialfor applications in electric vehicles, 5G communications, and aerospacedue to its outstanding physical properties. However, their high productioncosts limit their widespread industrial applications. The growth oflarger diameter and thicker crystals, particularly 8 in. crystals,offers the potential to reduce these costs. Therefore, large-diameterPVT crystal growth equipment with resistance heating has become afocal point of research in this field. In this paper, a novel double-flapresistance furnace design is proposed for the first time, and thethermal field is systematically studied by three-dimensional COMSOLMultiphysics modeling to optimize the growth of 8 in. 4H-SiC singlecrystals. It is found that the resistance heating system significantlyoutperforms the induction heating system by providing a lower radialtemperature gradient necessary for large-diameter SiC crystals. Additionally,the influence of key parameters such as the crucible, the distancebetween the heater and the crucible, and the growth power on the thermalfield distribution in the crucible was also systematically studied.The influence of the distance from the surface of the source materialto the crystal surface and the distance from the center of the crystalto the edge on both the axial and radial temperature differences isalso analyzed. Based on the simulation results, the crystal growthscheme was further optimized and an 8 in. SiC crystal with a thicknessabove 20 mm and resistivity uniformity was successfully obtained usingthe novel resistance furnace. This is of great significance for thegrowth of large-diameter SiC crystals.

Abstract In this study, argon is utilized to simulate a low‐oxygen environment, and the precise amount of oxygen is calculated by employing the ideal gas law. Ti3AlC2 samples underwent rapid induction heating in argon, followed by cooling in either argon or water. Consequently, defects in the Ti3AlC2 samples increased with temperature due to the faster cooling rate of water, leading to residual flexural strength lower than samples quenched in argon. It is worthy of note that at 1040°C, a thin dense oxide layer is formed despite the minimal oxygen content. This provides the substrate with protection and results in unusually high strengths, reaching up to 647 MPa for samples quenched in argon. Upon attaining a specific temperature, a decline in strength is observed, attributable to the decomposition of the Ti3AlC2 substrate. In summary, Ti3AlC2 exhibited superior thermal shock resistance after quenching in argon gas.

Abstract To address the issue of damage occurring during the disassembly of interference fit structures in aero engines, a disassembly method based on induction heating is proposed. This paper establishes a transient heat conduction theory for the circular ring and, combined with the thermal expansion theory of the stepped ring, derives a time-varying theoretical model for the interference pressure at the spigot. Based on the above theoretical model, the disassembly time under the influence of different parameters is analyzed. Finally, the theory is successfully used to predict the induction heating disassembly time for a real aero-engine rotor. The research demonstrates that induction heating technology can be applied to the disassembly process of aero-engines, and the theoretical model proposed in this paper can provide guidance for this process.