Magnetic Properties of Fe-Ni-Cr Alloy Coatings Processed via High-Velocity Oxygen-Fuel Spraying.
- 1School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang 471000, China.
- 2Xinchang Technology Achievement Transformation Center, Henan University of Science and Technology, Shaoxing 312500, China.
- 3Zhejiang Sling Intelligent Drive Group Co., Ltd., Shaoxing 312500, China.
Abstract
In this work, soft magnetic coatings were fabricated from Fe-Ni-Cr (1J38) alloy powders via high-velocity oxygen-fuel (HVOF) spraying. The microstructural features and intrinsic magnetic properties were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), and a background signal stripping algorithm. Furthermore, the microstructural defects and magnetic degradation characteristics of coatings with varying thicknesses were comparatively analyzed. The results indicate that while the HVOF deposits exhibit exceptional density, the rapid quenching process inevitably induces oxygen-rich inter-splat boundary networks and residual stresses within the coatings. XRD analysis reveals no significant macroscopic oxidation or phase transformation during deposition, demonstrating a high-fidelity retention of the original face-centered cubic (FCC) lattice structure of the feedstock alloy. Magnetic measurements, upon the precise elimination of substrate background interference, reveal a distinct wasp-waisted magnetization distortion at low magnetic fields. This phenomenon can be attributed to the asynchronous magnetization response between the easily reversed, unoxidized soft-magnetic splat cores and the high-barrier boundary pinning networks (composed of inter-splat oxide interlayers and localized high-stress concentrations) within the coating. Compared to the thicker deposits (0.5 mm), the thinner coatings (0.3 mm) exhibit superior magnetic performance, characterized by a lower intrinsic coercivity. This degradation in thicker coatings is ascribed to the substantial accumulation of macroscopic residual stresses during deposition, which exert a stronger pinning effect on magnetic domain wall motion.
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BibTeX
@article{ma2026magnetic,
title = {{Magnetic Properties of Fe-Ni-Cr Alloy Coatings Processed via High-Velocity Oxygen-Fuel Spraying.}},
author = {Xiqiang Ma and Shuai Han and Dongliang Jin and Jinpeng Li and Nan Guo},
journal = {Materials (Basel, Switzerland)},
year = {2026},
month = oct,
doi = {10.3390/ma19194258},
url = {https://europepmc.org/article/MED/42882756},
note = {CC BY},
}
RIS
TY - JOUR
TI - Magnetic Properties of Fe-Ni-Cr Alloy Coatings Processed via High-Velocity Oxygen-Fuel Spraying.
AU - Xiqiang Ma
AU - Shuai Han
AU - Dongliang Jin
AU - Jinpeng Li
AU - Nan Guo
PY - 2026
DA - 2026/10/08
JO - Materials (Basel, Switzerland)
DO - 10.3390/ma19194258
UR - https://europepmc.org/article/MED/42882756
AB - In this work, soft magnetic coatings were fabricated from Fe-Ni-Cr (1J38) alloy powders via high-velocity oxygen-fuel (HVOF) spraying. The microstructural features and intrinsic magnetic properties were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), and a background signal stripping algorithm. Furthermore, the microstructural defects and magnetic degradation characteristics of coatings with varying thicknesses were comparatively analyzed. The results indicate that while the HVOF deposits exhibit exceptional density, the rapid quenching process inevitably induces oxygen-rich inter-splat boundary networks and residual stresses within the coatings. XRD analysis reveals no significant macroscopic oxidation or phase transformation during deposition, demonstrating a high-fidelity retention of the original face-centered cubic (FCC) lattice structure of the feedstock alloy. Magnetic measurements, upon the precise elimination of substrate background interference, reveal a distinct wasp-waisted magnetization distortion at low magnetic fields. This phenomenon can be attributed to the asynchronous magnetization response between the easily reversed, unoxidized soft-magnetic splat cores and the high-barrier boundary pinning networks (composed of inter-splat oxide interlayers and localized high-stress concentrations) within the coating. Compared to the thicker deposits (0.5 mm), the thinner coatings (0.3 mm) exhibit superior magnetic performance, characterized by a lower intrinsic coercivity. This degradation in thicker coatings is ascribed to the substantial accumulation of macroscopic residual stresses during deposition, which exert a stronger pinning effect on magnetic domain wall motion.
SN - 1996-1944
ER -