•21•DOI:10.19289/j.1004-227x.2023.04.004等离子处理对钕铁硼表面纳米涂层性能的影响阙永生1,唐国才1,*,申乾宏2,刘斌1,卢彬彬1,汪庆蓉1,刘杰21.浙江鑫盛永磁科技有限公司,浙江安吉3133002.浙江大学浙江加州国际纳米技术研究院,浙江杭州310058摘要:对比了不同条件下等离子处理后钕铁硼磁铁表面硅钛系纳米涂层的表面张力、耐铜加速乙酸盐雾(CASS)腐蚀性能、抗高压加速老化(PCT)性能及其与胶水之间的粘接力。结果表明,以空气为气源等离子处理4次(每次2s)后涂层的表面张力可以达到粘接所需的60mN/m。与采用氮气相比,空气条件下等离子处理后的涂层具有更好的表面张力耐久性,在自然老化6个月内保持≥50mN/m。涂层经等离子处理后,在拉脱测试中的拉脱强度由处理前的20MPa左右增大到至少30MPa,且其耐蚀性和抗老化性未受影响。X射线光电子能谱(XPS)和傅里叶变换红外光谱(FTIR)分析表明,涂层表面张力增大主要是由于大量O元素和少量N元素的引入产生了大量缔合羟基和少量α-氨基酸基团。关键词:钕铁硼磁体;硅钛系纳米涂层;等离子处理;表面张力;耐蚀性中图分类号:TG495;TG178文献标志码:A文章编号:1004–227X(2023)04–0021–06EffectofplasmatreatmentonpropertiesofnanocompositecoatingforNdFeBmagnetQUEYongsheng1,TANGGuocai1,*,SHENQianhong2,LIUBin1,LUBinbin1,WANGQingrong1,LIUJie21.ZhejiangXinshengPermanentMagnetTechnologyCo.,Ltd.,Anji313300,China2.Zhejiang-CaliforniaInternationalNanoSystemsInstitute,ZhejiangUniversity,Hangzhou310058,ChinaAbstract:Thesurfacetensionofasilica–titaniananocompositecoatingonneodymium–iron–boron(NdFeB)magnetafterplasmatreatmentunderdifferentconditionswasmeasured.Thecopper-acceleratedacidsaltspray(CASS)test,pressurecookertest(PCT),andpull-offtestwerecarriedouttoevaluatetheresistanceoftheplasma-treatedcoatingtocorrosionandhigh-pressureacceleratedagingandtheadhesionbetweenadhesiveandtheplasma-treatedcoating.Theresultsshowedthatthesurfacetensionofthecoatingtreatedbyplasmainairforfourtimes(2secondsforeachtime)reachedupto60mN/mwhichisrequiredforadhesivebonding.Thecoatingplasma-treatedinairhadbettersurfacetensiondurabilitythanthatplasma-treatedinnitrogen,anditssurfacetensionmaintainedatleast50mN/mwithinsixmonthsundern...