摘要
为了提高Ni–P合金镀层的耐蚀性和表观质量,在化学镀Ni–P二元合金镀液的基础上加入钨酸钠,在钢铁上制备了Ni–W–P三元合金镀层。探讨了镀液主要成分和工艺条件对镀层外观质量及耐蚀性的影响,获得了较佳的工艺规范：硫酸镍25~35 g/L,钨酸钠55~65 g/L,次磷酸钠30~40 g/L,复合配位剂80~100 g/L,组合光亮剂5~10 mg/L,p H 8.5~9.0,温度80~90℃。检测了镀层的相关性能。结果表明,所制备的Ni–W–P合金镀层结晶细致,光亮度和结合力好,具有良好的装饰效果,耐蚀性优于化学镀Ni–P合金镀层。
To improve the corrosion resistance and appearance quality of Ni-P alloy deposit, sodium tungstate was added to the electroless Ni-P binary alloy plating bath to prepare an Ni-W-P ternary alloy deposit on iron and steels. The effects of the main components in bath and process specifications on the appearance quality and corrosion resistance of deposit were studied. The optimal conditions were determined as follows： NiSO4·7H2O 25-35 g/L, Na2WO4·2H2O 55-65 g/L, Na2HPO2·H2O 30-40 g/L, composite complexing agent 80-100 g/L, composite brightener 5-10 rag/L, pH 8.5-9.0, and temperature 85-90 ℃. The relevant properties of deposit were tested. The results indicated that the Ni-W-P alloy deposit prepared is fine-grained, very bright, decorative with good adhesion strength and better corrosion resistance as compared with the electroless Ni-P alloy deposit.
出处
《电镀与涂饰》
CAS
CSCD
北大核心
2015年第3期130-135,共6页
Electroplating & Finishing
关键词
钢铁
化学镀
镍–钨–磷合金
光亮剂
沉积速率
耐蚀性
iron and steel
electroless plating
nickel-tungsten phosphorus alloy
brightener
deposition rate
corrosion resistance
作者简介
肖鑫（1964），男，湖南南县人，本科，教授，湖南省高校青年骨干教师，湖南省高校重点建设学科“应用化学”电镀与表面涂饰学术带头人，兼任湖南省机械表面工程学会理事长，中国机械工程学会表面工程分会委员，《电镀与涂饰》编委，主要研究方向为高耐蚀金属与合金电镀及化学镀技术，电镀综合控制技术，特种涂料与涂装技术。主持包括省自然科学基金在内各类科研项日30余项，近20余项科研成果应用于生产，发表论文100余篇，10篇论文获省市优秀论文，主编著作4部，获得发明专利3项。作者联系方式：（E—mail）xiaoxin88@tom．com。
