TY - JOUR
T1 - Corrosion resistance of T-ZnOw/PDMS-MAO composite coating on the sintered NdFeB magnet
AU - Chen, J.
AU - Xu, J. L.
AU - Huang, J.
AU - Dai, L.
AU - Xue, M. S.
AU - Luo, J. M.
N1 - Funding Information:
The authors gratefully acknowledge the financial support of the project from the National Natural Science Foundation of China (51764041 and 51704167) and the Natural Science Foundation of Jiangxi Province (20202ACBL214011).
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/9/15
Y1 - 2021/9/15
N2 - A zinc oxide whisker/polydimethylsiloxane-micro-arc oxidation (T-ZnOw/PDMS-MAO) composite coating was fabricated via MAO treatment coupled with spraying T-ZnOw/PDMS on sintered NdFeB magnet. The surface morphologies, chemical compositions and corrosion resistance of the composite coating were investigated using SEM, XRD, FT-IR, accelerated immersion test and electrochemical test, respectively. The effect of the composite coating on magnetic properties of NdFeB magnet was also studied. The results show that the composite coating has no significant effect on the magnetic properties of NdFeB magnet. The porous structure of the MAO coating is efficiently sealed by the PDMS molecules and the T-ZnOw/PDMS hybrid coating exhibits excellent superhydrophobicity with a contact angle of 168.67 ± 5.71° and sliding angle of 5.12 ± 2.81°. The T-ZnOw/PDMS-MAO composite coating can significantly enhance the corrosion resistance of the sintered NdFeB magnet.
AB - A zinc oxide whisker/polydimethylsiloxane-micro-arc oxidation (T-ZnOw/PDMS-MAO) composite coating was fabricated via MAO treatment coupled with spraying T-ZnOw/PDMS on sintered NdFeB magnet. The surface morphologies, chemical compositions and corrosion resistance of the composite coating were investigated using SEM, XRD, FT-IR, accelerated immersion test and electrochemical test, respectively. The effect of the composite coating on magnetic properties of NdFeB magnet was also studied. The results show that the composite coating has no significant effect on the magnetic properties of NdFeB magnet. The porous structure of the MAO coating is efficiently sealed by the PDMS molecules and the T-ZnOw/PDMS hybrid coating exhibits excellent superhydrophobicity with a contact angle of 168.67 ± 5.71° and sliding angle of 5.12 ± 2.81°. The T-ZnOw/PDMS-MAO composite coating can significantly enhance the corrosion resistance of the sintered NdFeB magnet.
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U2 - 10.1016/j.jmmm.2021.168049
DO - 10.1016/j.jmmm.2021.168049
M3 - Article
AN - SCOPUS:85105098258
SN - 0304-8853
VL - 534
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
M1 - 168049
ER -