摘要
为改进铝合金化学镀镍工艺,避免浸锌对化学镀镍液的污染,研究了铝合金活化-预化学镀镍工艺。通过结合力、孔隙率和耐蚀性试验,确定了活化工艺最佳pH值为9～10,预化学镀镍最佳时间为4～5min。结果表明,活化-预化学镀镍工艺可代替浸锌法,镀层质量达到GB/T13913-92技术要求,为铝合金镀镍提供了新的前处理技术。
In order to improve electroless nickel plating technology of aluminum alloys and avoid contamination of zincate conversion process on electroless nickel plating solution, activation-electroless Ni pre-plating technology for aluminum alloys was investigated. The optimal conditions are determined that pH value in activation process is in the range of 9 to 10 and pre-plating time is about 4 to 5 minutes through coating adhesion and porosity and corrosion resistance tests. The coating quality meets the GB/T 13913 -92 specifications, thus the technology provides a new pretreatment for aluminum alloys and can be used to substitute the zincate conversion process.
出处
《材料保护》
CAS
CSCD
北大核心
2004年第1期30-32,共3页
Materials Protection
关键词
铝合金
活化
预化学镀镍
aluminum alloys
activation
electroless Ni pre-plating
