Zr-Al合金化学镀Ni-P镀层工艺研究  

Study of electroless Ni-P plating on Zr-Al alloy

作　　者：秦文波[1] 马静[1] 李强[1,2,3] 张双杰[1] 李永刚[1,4] 李扬[1] 

机构地区：[1]河北科技大学材料科学与工程学院,河北石家庄050018 [2]燕山大学机械工程学院,河北秦皇岛066004 [3]燕山大学亚稳材料科学与制备技术国家重点实验室,河北秦皇岛066004 [4]河北工业职业技术学院材料工程系,河北石家庄050091

出　　处：《河北工业科技》2013年第1期1-5,共5页Hebei Journal of Industrial Science and Technology

基　　金：国家973项目(2010CB731604);河北科技大学杰出青年基金项目;河北科技大学大学生科技创新基金项目

摘　　要：采用化学镀技术在经磷化处理后的Al含量为8.0%(质量分数)的Zr-Al合金表面进行施镀,得到了表面镀覆均匀、为明显胞状物的非晶Ni-P镀层。并对镀层进行显微硬度测试、电化学腐蚀极化行为、XRD和SEM分析。研究确定了磷化液的配方:H3PO4为15g/L(质量浓度,下同),ZnSO4为3g/L,NaF为1.5g/L,有机胺(硫脲)为0.15g/L,pH值为2.5～3.0,温度为45℃,时间为2min;镀液配方:NiSO4为20g/L,NaH2PO2为40g/L,(NH4)2SO4为40g/L,CH3COONa为40g/L,(CH3COO)2Pb为1mg/L,控制pH值为5.5～6.0,温度为80℃,施镀1h。结果表明,Zr-Al合金化学镀Ni-P后镀层的耐蚀性能、显微硬度显著提高。The purpose of this paper is to get the electroless Ni-P plating on the surface of Zr-8 A1 alloy. The Ni-P plating was even, cystiform and amorphous. The ingredient of phosphating solution was obtained as follows： 15 g/L H2PO4, 3 g/L ZnSO,, 1.5 g/L NaF, 0.15 g/L organic amine. Phosphating was carried at 45℃ for 2 minutes with pH value of 2.5-3.0. The ingredient of electroless bath was.. 20 g/LNiSO4, 40 g/LNaH2 PO2, 40 g/L （ NH4 ）2 SO4 , 40 g/L CH3 COONa , 1 mg/L （CHa COO）2 Pb. Electroless plating was carried at 80℃for 1 hour with pH value of 5.5-6.0. From mlcrohardness, electrochemical polarization, XRD and SEM results, it is shown that the corrosion resistance and microhardness of Zr-AI alloy with Ni-P plating were remarkably improved.

关 键 词：Zr-Al合金 化学镀Ni—P 磷化处理 显微硬度 耐蚀性 

分 类 号：TG174.4[金属学及工艺—金属表面处理]