锌粉颗粒形状对机械镀锌层性能的影响  

Effects of Particle Shapes of Zinc on the Properties of Mechanically Deposited Coating

作　　者：王胜民[1] 赵晓军[1] 何明奕[1] 刘丽[2] 裴和中[1] 谭蓉[1] 

机构地区：[1]昆明理工大学机电工程学院,昆明650093 [2]云南民族大学化学与生物技术学院,昆明650031

出　　处：《材料工程》2009年第11期84-87,共4页Journal of Materials Engineering

基　　金：国家自然科学基金(50561003);云南省教育厅科研基金项目(07Y41414);昆明理工大学青年基金项目(校青2006-10)

摘　　要：以球状锌粉和片状锌粉为原始锌粉制备了机械镀锌层,采用SEM观察了镀层的结构形貌;采用XRD分析了锌粉颗粒形状对镀层物相组成的影响;采用表面洛氏硬度计分析了锌粉颗粒形状对镀层表面硬度的影响;采用中性盐雾实验和电化学极化方法分析了锌粉颗粒形状对镀层耐腐蚀性能的影响。研究结果表明:锌粉颗粒形状对镀层表面硬度的提高基本没有影响,片状锌粉制备镀层的表面硬度的均匀性要优于球状锌粉制备的镀层;锌粉颗粒形状对镀层的物相组成没有影响,两种锌粉制备的镀层中都没有生成新的合金相;片状锌粉制备的镀层的耐腐蚀性能要稍微优于球状锌粉制备的镀层。Zinc coatings were prepared by mechanically deposition method with spherical zinc particle and lamellar zinc particle, respectively. SEM and XRD were employed to study the structure and the phase constitutes of the coating. Surface hardness was studied by surface Rockwell hardness tester. The effects of particle shapes of zinc powders on the coating anticorrosion property was studied by salt spray test and potentiodynamic polarization. The results show that particle shape of zinc powders has no effects on surface hardness and phase constitutes of the coating. The corrosion resistance of coating obtained by lamellar zinc particle is better than that obtained by spherical zinc particle.

关 键 词：球状锌粉 片状锌粉 机械镀 表面硬度 物相组成 耐蚀性 

分 类 号：TG174.44[金属学及工艺—金属表面处理]