民用飞机镀锌镍工艺研究

Study on Galvanized Nickel Technology for Civil Aircraft

为适用民用飞机代镉需求,分析了波音、空客、庞巴迪等知名飞机制造商的工艺规范中对镀锌镍工艺要求的差异,对国内普遍采用的NZ-70系列碱性镀锌镍溶液电镀试样进行了测试。结果表明:NZ-70镀锌镍溶液可满足波音、空客、庞巴迪等的企业标准及美国宇航材料规范对镀锌镍结合力、耐蚀性、镍含量、氢脆性能的要求,其镀层氢可渗漏性不低于氰化镀镉钛性能要求,可替代进口溶液用于民用飞机高强度钢零件的表面防护。

In order to meet the demand of cadmium substitution for civil aircraft, the differences of galvanized nickel process requirements in Boeing, Airbus, Bombardier and other famous aircraft manufacturer were analyzed, and the NZ-70 series alkaline galvanized nickel solution electroplating samples widely used in China were tested. Results showed that NZ-70 galvanized nickel solution could meet the enterprise requirements of Boeing, Airbus, Bombardier, and American aerospace material specifications for galvanized nickel adhesion, corrosion resistance, nickel content, hydrogen embrittlement. In addition, the hydrogen leakage of the coating was not lower than the performance requirements of cyanide cadmium and titanium plating, which could replace the imported solution for the surface protection of high-strength steel parts of civil aircraft.