摘要
研究了中温酸性环境下影响化学复合镀Ni-P-ZrO_2工艺的主要因素,通过实验探索了ZrO_2纳米颗粒的用量、搅拌速率、pH和温度对镀液及镀层性能的影响。获得了最佳工艺如下:ZrO_2粒子用量30 mg/L,pH=5,搅拌速率500 r/min。在此工艺下所得镀层的显微硬度为650 HV,与Ni-P合金镀层的相对耐磨性为4.6,耐硝酸点蚀时间大于150 s,镀层磷含量为6.80%,ZrO_2含量为17.6%。
The influence of major factors on electroless composite plating process of Ni-P-ZrO2 under middle temperature and acidic conditions was studied, and the effects of dosage of nano-ZrO2 particles, stirring rate, pH and temperature on the properties of the bath and deposit were explored experimentally. The optimal process parameters were obtained as follows： dosage of ZrO2 particle 30 mg/L, pH = 5 and stirring rate 500 r/min. The deposit obtained by this process has a microhardness 650 HV, relative wearresistance 4.6 compared with a Ni-P alloy deposit, time to failure in the nitric acid dropping corrosion test more than 150 s, phosphorus content 6.80% and ZrO2 content 17.6%.
出处
《电镀与涂饰》
CAS
CSCD
北大核心
2010年第6期21-24,共4页
Electroplating & Finishing
基金
国家自然科学基金(20801026)
关键词
化学复合镀
镍磷合金
二氧化锆
中温
酸性
electroless composite plating
nickel-phosphorus alloy
zirconia
middle temperature
acidity
