摘要
采用浸渍失重试验法和动电位极化曲线研究了钨铜合金基材和钨铜合金表面化学镀Ni-P合金镀层在不同腐蚀介质溶液中的腐蚀行为。浸渍失重试验结果表明:Ni-P合金在质量分数为3.5%的NaCl溶液、人工模拟汗液和体积分数为10%的H2SO4溶液中的耐腐蚀性能好于钨铜合金;动电位极化曲线研究表明:化学镀Ni-P合金浸入3.5wt.%NaCl溶液后不久其表面便开始形成钝化膜,但此钝化膜不完整,随着浸泡时间的延长,钝化膜不断生长,能在较长时间内(29d)对钨铜合金起到保护作用。
The corrosion behavior of Ni-P deposit on W-Cu alloy in different corrosion solution was tested by weight loss test and the polarization curves. The weight loss tests the anti-corrosion ability of Ni-P deposit in 3.5%（wt.%） NaCl solution, self-made sweat solution and 10% H2SO4 solution was better than W-Cu alloy. The polarization curves indicate that soon after the electroless Ni-P coating was immersed in NaCl solution, the passive membrane began to generate, but it was not integrated. And with the increasing of the immersion time the passive membrane becomes integrated and it can offer protective help to W-Cu alloy in such a long time （29d）.
出处
《全面腐蚀控制》
2008年第1期39-41,共3页
Total Corrosion Control
关键词
鸽铜合金
化学镀
镍磷合金
腐蚀行为
W-Cu alloy
electroless plating
Ni-P alloy
corrosion behavior
