摘要
现有的"高速"化学镀并不高速,为开发真正的高速化学镀技术,以6063铝合金挤压型材为研究对象,系统研究了新型高速化学镀镀液主要成分对化学镀施镀效果(镀速、镀层硬度、镀后镀液pH值)的影响规律,优化了镀层高速制备工艺,并对优化工艺所得试样进行形貌、成分及耐蚀性分析。结果表明:最优镀液配方为30.0 g/L NiSO_4·6H_2O,30.0 g/L NaH_2PO_4·H_2O,30.0 g/L CH_3COONa,0.75 g/L C_6H_8O_7,3 mg/L H_2NCSNH_2,利用该镀液施镀,镀速高达14.26 mg/(cm^2·h);最佳镀层结构致密,具有典型的胞状/条状及条带状微观形貌,主要由Ni、P元素组成,其中P含量8.06%,镀层呈阴极性,对基体具有较强的腐蚀防护作用。
In order to develop the real high-speed electroless plating method, with 6063 aluminum alloy extrusion profile as study suhject, tile influences of the major components of the newly developed electroless plating bath on the plating performance were investigated systematically. Moreover, the highspeed manufacture process was optimized, and the morphology, composition and corrosion resistance of the prepared sam- ple under optimal conditions were analyzed. Results showed that the optimized formula of plating solution was 30.0 g/L NiSO4 · 6H2O, 30.0 g/L NaH2PO4 · H20, 30.0 g/L CH3COONa, 0.75 g/L C6HsO7 and 3 mg/L H2NCSNH. The plating speed in the optimal solution reached 14.26 mg/（ cm2 · h） , and the as-prepared coating possessed compact structure and typical cell-like anti strip-like appearance. Moreover, the cladding was mainly composed of Ni and P, in which the content of P was 8.06%. The cladding was cathodic and could provide excellent corrosion protection on the substrate.
作者
张永君
唐鹰翔
吕旺燕
ZHANG Yong-jun;TANG Ying-xiang;LYU Wang-yan(School of Mechanical ＆ Automotive Engineering, South China University of Technology, Guangzhou 510641, China;Electric Power Research Institute of Guangdong Power Grid Co., Ltd., Guangzhou 510080, China)
出处
《材料保护》
CAS
CSCD
北大核心
2018年第6期54-58,共5页
Materials Protection
基金
中国南方电网有限责任公司科技项目(GDKJQQ20152045)资助
关键词
化学镀
高速
铝合金
Ni-P二元合金
工艺
electroless plating
high - speed
aluminum alloy
Ni - P binary alloy
process
