封闭工艺对薄镍耐蚀性的影响  

Effect of Sealing Process on Corrosion Resistance of Thin Nickel

作　　者：曹鑫帅 陈云瑞 白亚慧 黄鹏艳 夏文欣 陈旭 王春霞[1] CAO Xinshuai;CHEN Yunrui;BAI Yahui;HUANG Pengyan;XIA Wenxin;CHEN Xu;WANG Chunxia(School of Materials Science and Engineering,Nanchang Hangkong University,Nanchang 330063,China)

机构地区：[1]南昌航空大学材料科学与工程学院,江西南昌330063

出　　处：《电镀与精饰》2021年第10期36-40,共5页Plating & Finishing

摘　　要：为提高薄镍耐腐蚀性能,研制了一种由成膜物质、辅助成膜物质及表面活性剂复配而成的水溶性封闭剂,对碳钢表面3μm镍层进行封闭处理。结果表明,以硬脂酸钠、三乙醇胺、钼酸钠和十二烷基磺酸钠等成分复配的封闭剂使薄镍具有良好的耐蚀性;经过封闭处理以后,腐蚀电位由208 mV上升为300 mV,腐蚀电流由16.78μA·cm^(-2)下降至11.40μA·cm^(-2),镍表面接触角由92.99°增大到104.99°,耐中性盐雾试验时间由0.5 h增加到5.0 h。In order to improve the corrosion resistance of thin nickel,a water-soluble sealant consisting of film-forming substance,auxiliary film-forming substance and surfactant was developed to seal the 3μm nickel layer on the surface of carbon steel.The experimental results showed that the sealing agent compounded with sodium stearate,triethanolamine,sodium molybdate and sodium dodecyl sulfonate made the thin nickel with good corrosion resistance.After sealing treatment,the corrosion potential increased from 208 mV to 300 mV,the corrosion current decreased from 16.78μA·cm^(-2)to 11.40μA·cm^(-2),the contact angle of the nickel surface increased from 92.99°to 104.99°,and the neutral salt spray resistance test time increased from 0.5 h to 5.0 h.

关 键 词：封闭剂 电镀镍层 成膜封孔 耐腐蚀性能 

分 类 号：TQ153.1[化学工程—电化学工业]