马静.Zr-8.8Al合金化学镀前磷化处理工艺研究[J].稀有金属材料与工程,2016,45(1):159~164.[majing.Phosphating pre-plating process for electro-less plating on Zr-8.8Al alloy[J].Rare Metal Materials and Engineering,2016,45(1):159~164.]
Zr-8.8Al合金化学镀前磷化处理工艺研究
投稿时间:2014-02-21  修订日期:2014-07-18
中文关键词:  Zr-Al合金  化学镀Ni-P镀层  磷化处理  前处理
基金项目:国家973项目(2010CB731604)和河北科技大学杰出青年基金项目
中文摘要:
      前处理工艺的选择直接决定了化学镀Ni-P镀层质量的高低。本文采用磷化法对Zr-8.8Al合金进行了化学镀前处理,研究了Zr-8.8Al合金在不同磷化工艺获得的磷化膜以及化学镀Ni-P镀层显微结构、显微硬度、抗蚀性等的影响规律。结果表明,45℃下2min获得的磷化膜均匀致密;在此工艺下进行化学镀处理获得的Ni-P镀层为非晶结构,胞状结构,厚度达25μm。与裸材相比,Ni-P镀层显微硬度提高了60%,在3.5wt%NaCl溶液中自腐蚀电位发生正移,极化腐蚀后镀层胞状较完整,对Zr-8.8Al合金起到了较好的保护作用。
Phosphating pre-plating process for electro-less plating on Zr-8.8Al alloy
英文关键词:Zr-Al alloy, electro-less Ni-P plating, phosphating, pre-plating process
英文摘要:
      The quality of electro-less Ni-P plating is dependent on the process of pretreatment. In this paper, phosphating pretreatment was preformed for electro-less Ni-P plating on Zr-8.8Al alloy. The effect of phosphating process on the microstructure, microhardness and corrosion resistance in 3.5 wt% NaCl solution of electro-less Ni-P plating was investigated. The results show that the phosphating film obtained at 45℃ for 2min was uniform and even. The electro-less Ni-P plating has amorphous cellular structure and was about 25μm thickness. Compared with that of nonplated alloy, the microhardness of electroless Ni-P plating after phosphating pretreatment was improved by 60 percent. The corrosion potential of electro-less Ni-P plating after phosphating pretreatment in 3.5 wt% NaCl solution shift positively. The plating after corrosion is still complete, which shows that the corrosion resistance of electroless Ni-P plating after phosphating pretreatment is excellent.
作者单位E-mail
马静 河北科技大学 majingt@qq.com 
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