文献类型：期刊文章

作　　者：陈东初[1,2] 吴建锋[3] 梁奕清[4] 叶树林[3] 李文芳[2]

机构地区：[1]佛山科学技术学院理学院,佛山528000 [2]华南理工大学材料科学与工程学院,广州510641 [3]佛山科学技术学院机电工程学院,佛山528000 [4]兴发铝业有限公司研发中心,佛山528061

出　　处：《Transactions of Nonferrous Metals Society of China》

基　　金：Project (20070420772) supported by Postdoctoral Science Foundation of China;Project (7010404) supported by the Natural Science Foundation of Guangdong Province,China

年　　份：2011

卷　　号：21

期　　号：8

起止页码：1905-1910

语　　种：中文

收录情况：AJ、CAS、CSA、CSA-PROQEUST、CSCD、CSCD2011_2012、EBSCO、EI、IC、INSPEC、JST、SCI(收录号：WOS:000295935400034)、SCI-EXPANDED(收录号：WOS:000295935400034)、SCIE、SCOPUS、WOS、ZGKJHX、普通刊

摘　　要：Ce（SO4）2？H2O2 solution was adopted to prepare a chemical conversion coating on AZ91D magnesium alloy.Additives of Ni（NO3）2 and sodium dodecyl benzene sulfonate were applied to improving the coating formation.SEM,EDS,XRD and GIXD were adopted to study the coating morphology,structure and composition,and the potential change curve in the treating solution was recorded to study the coating growth.Sodium dodecyl benzene sulfonate makes a remarkable improvement in the coating compactness,and shortens the time in the second stage of the coating formation from 5 min to 2 min.Compared to Ni（NO3）2,sodium dodecyl benzene sulfonate makes the more remarkable effect on the corrosion resistance improvement,since it can decrease the current density of corrosion from 7.41×10-5 A/cm2 to 2.20×10-5 A/cm2.The additives of Ni（NO3）2 and sodium dodecyl benzene sulfonate can enhance the Ce content from 18.92% to 22.32% and 25.08% in the coating,respectively.The XRD and GIXD results indicated that all the conversion coating formed in different solutions exhibit amorphous structure.

关 键 词：magnesium alloys  surface treatment  conversion coating  rare earth  ADDITIVES

分 类 号：TG174.4]