Cu/纳米ZrO_2复合电刷镀层的耐磨与耐蚀性  

Wear Resistance and Corrosion Resistance of Electro-Brush Plated Copper/Nano-Zirconia Composite Coating

作　　者：袁庆龙[1] 王西涛[2] 梁宁宁 李平[1] 

机构地区：[1]河南理工大学材料科学与工程学院,河南焦作454003 [2]长沙矿山研究院有限责任公司,湖南长沙410000 [3]长沙创远高新机械有限责任公司,湖南长沙410000

出　　处：《材料保护》2015年第2期15-18,6-7,共4页Materials Protection

基　　金：国家自然科学基金项目(51275156)资助

摘　　要：为了提高纯铜件表面的耐磨、耐蚀性能,又保证其导热性,以紫铜板为基材,采用电刷镀方法制备了Cu/纳米ZrO2复合镀层,对镀层的表面形貌、耐磨性及耐蚀性进行了分析,并与未添加纳米ZrO2制备的普通快速铜镀层进行比较。结果表明:纳米ZrO2颗粒的加入显著改变了快速铜镀层形貌,在镀液中纳米ZrO2颗粒含量为30g/L时,复合镀层表面平整度和致密性最佳;硬质纳米ZrO2颗粒的嵌入改变了铜基镀层的黏着磨损,表现为显微切削磨粒磨损;在3.5%NaCl溶液中,纳米ZrO2颗粒的加入,使复合镀层的腐蚀电位显著正移,经10%醋酸溶液浸泡复合镀层的腐蚀速率比普通快速铜镀层小1个数量级,耐蚀性得到了提升。Copper/nano-zirconia(denoted as Cu/nano-ZrO_2) composite coatings were prepared on copper plate by electro-brush plating.The surface morphology,wear resistance and corrosion resistance of as-prepared Cu/nano-ZrO_2 composite coatings were analyzed in comparison with those of conventional fast-plated Cu coating.Results showed that the introduction of nano-ZrO_2 led to significant change in the morphology of electro-brush plated Cu coating.As the content of nano-ZrO_2 in the plating bath was 30 g/L,corresponding Cu/nano-ZrO_2 composite coating exhibited the best smoothness and compactness.In the meantime,the ZrO_2 nanoparticles embedded in the electro-brush plated Cu coating transformed the adhesion wear of fast-plated Cu coating to micro-cutting and abrasive wear of the composite coating;and they also resulted in significant positive shift of corrosion potential as well as greatly improved corrosion resistance of the composite coating.Namely,upon immersion in 10%acetic acid solution,the corrosion rate of the Cu/nano-ZrO_2 composite coating was smaller than that of fast-plated Cu coating by one order of magnitude.

关 键 词：电刷镀 快速铜镀层 纳米ZRO2 表面形貌 耐磨性 耐蚀性 

分 类 号：TQ153[化学工程—电化学工业]