掺杂氧化钇及氧化铬颗粒对纯铝微弧氧化膜层性能的影响  

Effect of Doping Yttrium Oxide and Chromium Oxide Particles on the Properties of Pure Aluminum Micro-Arc Oxidation Film

作　　者：杨涵 冯军 金凡亚[2] 李必文[1] 黄熠 但敏[2] 翦奉林 唐国庆 YANG Han;FENG Jun;JIN Fan-ya;LI Bi-wen;HUANG Yi;DAN Min;JIAN Feng-lin;TANG Guo-qing(School of Mechanical Engineering,University of South China,Hengyang 421000,China;Southwest Institute of Physics of Nuclear Industry,Chengdu 610041,China)

机构地区：[1]南华大学机械工程学院,湖南衡阳421000 [2]核工业西南物理研究院,四川成都610041

出　　处：《材料保护》2023年第4期46-53,共8页Materials Protection

基　　金：国家磁约束核聚变能发展研究专项(2018YFE0313100)资助。

摘　　要：为了探究氧化钇和氧化铬颗粒对纯铝微弧氧化膜层性能的影响,采用磷酸盐电解液体系,以氧化钇和氧化铬为添加剂,利用微弧氧化技术,在1060工业纯铝表面制备微弧氧化膜层。利用扫描电镜(SEM)、X射线衍射仪器(XRD)、涡流测厚仪、显微硬度计、台阶仪器、摩擦磨损试验机和电化学方法分析测试了膜层的表面形貌、相组成、厚度、硬度、粗糙度、耐磨损性能和耐腐蚀性能。结果表明:与单独添加2.5 g/L Y_(2)O_(3)和2.5 g/L Cr_(2)O_(3)条件下相比,在电解液中同时加入2.5 g/L Y_(2)O_(3)和2.5 g/L Cr_(2)O_(3)制备的复合膜层表面孔洞数量减少,表面更加致密,耐磨性较好,膜层的显微硬度达到746 HV、厚度达到20.1μm、粗糙度达到2226.2 nm,且此时的复合膜层的自腐蚀电位最大,自腐蚀电流密度最小,耐腐蚀性能最好。For exploring the effects of yttrium oxide and chromium oxide particles on the properties of pure aluminum micro-arc oxide films,micro-arc oxide films were prepared on the surface of 1060 industrial pure aluminum by micro-arc oxidation technology in the phosphate-electrolytic liquid system with yttrium oxide and chromium oxide as additives.Scanning electron microscopy(SEM),X-ray diffraction(XRD)instrument,eddy current thickness meter,microhardness meter,step profiler,friction and wear testing machine,and electrochemical method were employed to characterize the surface morphology,phase composition,thickness,hardness,roughness,wear resistance and corrosion resistance.Results showed that compared with the film prepared with the addition of 2.5 g/L Y_(2)O_(3)or 2.5 g/L Cr_(2)O_(3)alone,the composite film prepared by adding 2.5g/L Y_(2)O_(3)and 2.5g/L Cr_(2)O_(3)possessed fewer holes on the surface,more compact surface and better wear resistance,with a microhardness of 746 HV,a thickness of 20.1μm and a roughness of 2226.2 nm.Meanwhile,the composite film had the maximum self-corrosion potential,the minimum self-corrosion current density and the optimal corrosion resistance.

关 键 词：铝 微弧氧化 氧化铬 氧化钇 耐磨损 耐腐蚀性 

分 类 号：TG174.451[金属学及工艺—金属表面处理]