双相镁锂合金表面磷酸盐化学转化膜的制备及性能研究  

Preparation and Properties of Phosphate Chemical Conversion Coatings on Dual Phase Mg-Li Alloys

作　　者：王妍 邢馨月 宫晓婷 张振宇 王保杰 WANG Yan;XING Xin-yue;GONG Xiao-ting;ZHANG Zhen-yu;WANG Bao-jie(School of Environmental and Chemical Engineering,Shenyang Ligong University,Shenyang Liaoning 110159,China)

机构地区：[1]沈阳理工大学环境与化学工程学院,辽宁沈阳110159

出　　处：《辽宁化工》2023年第6期781-784,共4页Liaoning Chemical Industry

基　　金：国家自然科学基金面上项目(项目编号:NO52071220);辽宁省博士启动基金(项目编号:NO2019-BS-200);大学生创新创业计划项目(项目编号:202110144022)。

摘　　要：以磷酸氢二铵、硝酸钙、十二烷基硫酸钠、磷酸组成磷酸盐转化液,采用正交实验法在不同浓度组成的转化液中分别制备镁锂合金磷酸盐化学转化膜,对比研究组分浓度对镁锂合金表面磷酸盐化学转化膜耐蚀性的影响。实验结果表明:合金在转化液组成配比为15 g·L^(-1) (NH_(4))_(2)HPO_(4)、35 g·L^(-1)Ca(NO_(3))_(2)·4H_(2)O、0.6 g·L^(-1) C_(12)H_(25)NaSO_(4)时形成的磷酸盐化学转化膜耐腐蚀性能最佳。The phosphate conversion coatings of magnesium lithium alloys were prepared in the conversion solution composed of diammonium hydrogen phosphate,calcium nitrate,sodium dodecyl sulfate and phosphoric acid by orthogonal test.The effects of component concentrations on the corrosion resistance of phosphate conversion coatings on the surface of magnesium lithium alloys were studied.The experimental results showed that the chemical conversion coating exhibited the best corrosion resistance when the composition ratio of conversion solution was 15 g·L^(-1)(NH_(4))_(2)HPO_(4),35 g·L^(-1) Ca(NO_(3))_(2)·4H_(2)O and 0.6 g·L^(-1) C_(12)H_(25)NaSO_(4).

关 键 词：磷酸盐转化膜 镁锂合金 腐蚀 

分 类 号：TQ050.96[化学工程]