首页|烧结NdFeB磁体表面Zn-Al/T8超疏水复合涂层的显微组织及耐蚀性

烧结NdFeB磁体表面Zn-Al/T8超疏水复合涂层的显微组织及耐蚀性

扫码查看
原文链接
  • 万方数据
  • 维普
为提升烧结NdFeB磁体的耐蚀性,采用旋涂法和等离子体增强化学气相沉积技术在其表面制备Zn-Al/T8(2-全氟辛基乙基丙烯酸酯)超疏水复合涂层.结果表明,Zn-Al涂层主要由片层状的Zn和Al相组成,厚度大约为28μm.Zn-Al/T8复合涂层的接触角达到151.78°,而滚动角仅为5.13°,说明Zn-Al/T8复合涂层可提供一个超疏水表面.Zn-Al涂层和Zn-Al/T8复合涂层对烧结NdFeB的磁性能均无显著影响.Zn-Al涂层通过牺牲阳极来提高NdFeB磁体的耐蚀性,而Zn-Al/T8复合涂层通过超疏水表面进一步提升耐蚀性.Zn-Al/T8复合涂层较Zn-Al涂层具有更好的耐盐雾性能.Zn-Al/T8超疏水复合涂层是一种非常有前途的烧结NdFeB磁体保护涂层.
Micro structure and corrosion resistance of Zn-Al/T8 superhydrophobic composite coating on sintered NdFeB magnet
In order to improve the corrosion resistance,the Zn-Al/T8(2-perfluorooctane ethyl acrylate)super-hydrophobic composite coating was prepared on the sintered NdFeB magnet by spin coating method coupled with plasma-enhanced chemical vapor deposition.The results show that the Zn-Al coating is mainly composed of lamellar Zn and Al phases with the thickness of approximately 28 μm.The contact angle of the Zn-Al/T8 coating reaches 151.78° with the rolling angle of 5.13°,indicating that the Zn-Al/T8 coating can provide a superhydrophobic surface.The Zn-Al and Zn-Al/T8 coatings have no significant effect on the magnetic properties of the NdFeB magnets.The Zn-Al coating improves the corrosion resistance of the NdFeB by sacrificing the anode,while the Zn-Al/T8 coating further enhances the corrosion resistance through the superhydrophobic surface.The Zn-Al/T8 composite coating has better salt spray resistance than Zn-Al coating.The Zn-Al/T8 superhydrophobic composite coating is a promising candidate for protecting the sintered NdFeB magnets.

microstructurecorrosion resistancesintered NdFeB magnetZn-Al coatingsuperhydrophobic surfacespin coating methodplasma-enhanced chemical vapor deposition

张晓虎、罗军明、徐吉林、陈金、黄俊、马永存、薛名山

展开 >

南昌航空大学材料科学与工程学院,南昌 330063

显微组织 耐蚀性 烧结NdFeB磁体 Zn-Al涂层 超疏水表面 旋涂法 等离子体增强化学气相沉积

国家自然科学基金Major Science and Technology Research and Development Project of Jiangxi Province江西省自然科学基金Key Project of"Science and Technology to Promote Mongolian Development",China

5216104020203ABC28W00620202ACBL214011XM2021BT03

2024

10.1016/S1003-6326(24)66494-0

中国有色金属学报(英文版)
中国有色金属学会

中国有色金属学报(英文版)

CSTPCD
影响因子：1.183
ISSN：1003-6326
年,卷(期)：2024.34(5)