镀液pH值对Ni-Fe-P合金镀层抗氢氟酸腐蚀性能的影响  

Effect of Bath pH Value on the Corrosion Resistance of Ni-Fe-P Alloy Coatings in Hydrofluoric Acid

作　　者：安朋亮 梁平[1] 刘峰[1] 史艳华[1] 赵艳[1] 逄旭光[1] AN Peng-liang;LIANG Ping;LIU Feng;SHI Yan-hua;ZHAO Yan;PANG Xu-guang(School of Mechanical Engineering, Liaoning Shihua University, Fushun 113001, China)

机构地区：[1]辽宁石油化工大学机械工程学院,辽宁抚顺113001

出　　处：《电镀与环保》2018年第3期44-46,共3页Electroplating & Pollution Control

基　　金：国家自然科学基金(51175240);2013年度辽宁省普通本科高等学校实验教学示范中心建设项目

摘　　要：通过极化曲线和电化学阻抗谱等方法,研究了镀液pH值对Ni-Fe-P合金镀层抗氢氟酸腐蚀性能的影响,并对镀层的表面形貌、成分、物相进行了分析。结果表明:弱酸性(pH值为5.45)镀液中制得的镀层中Fe元素的质量分数高,镀层表面质量好,腐蚀介质和基体接触的通道少,耐氢氟酸腐蚀性能最好。Effect of bath pH value on the corrosion resistance of Ni-Fe-P alloy coatings in hydrofluoric acid was studied by potentiodynamic polarization and electrochemical impedance spectroscopy,and the morphology,composition,phase structure of the coatings were analyzed.Results showed that the mass fraction of Fe element in the coating prepared from weak acid bath（pH=5.45）was high,and the coating with good surface quality and less passageway between corrosion medium and the matrix,so the corrosion resistance of the coating in hydrofluoric acid was the best.

关 键 词：Ni-Fe-P合金镀层 镀液pH值 Fe元素 电化学阻抗谱 

分 类 号：TG174[金属学及工艺—金属表面处理]