试样状态对铜合金脱铬腐蚀的影响  

Effect of the Sample's State on Dechromization of Copper Alloy

作　　者：刘建华[1] 张瑞军[1] 杨景茹[2] 孙奇娜 

机构地区：[1]燕山大学 亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004 [2]河北建材职业技术学院,河北秦皇岛066004 [3]中国环境干部管理学院,河北秦皇岛066004

出　　处：《稀有金属材料与工程》2007年第A03期299-303,共5页Rare Metal Materials and Engineering

摘　　要：针对铜合金在HCl溶液中脱铬腐蚀问题,借助金相、X射线衍射(XRD)、扫描电镜(SEM/EDX)及X射线荧光光谱仪测试手段研究了试样状态对铜合金脱铬腐蚀的影响,并对其脱铬机理进行了分析。结果表明:试样变形量越大,表面越粗糙,铜合金脱铬孕育期越短及脱铬时所需的HCl溶液的浓度和温度越低。同时,变形能增大脱铬速率,降低脱铬层组织的致密度;而表面粗糙度对脱铬速率和脱铬层组织的致密度影响不大。In order to realize the dechromization of copper alloy in HCl solution, the effect of the sample＇s state on dechromization of copper alloy was studied by means of metallographic observation, X-ray Diffractometer（XRD）, Scanning Electron Microscope （SEM/EDX）, and X-ray fluorescence spectrometer, and the mechanism of dechromisation was also analyzed. The results showed that the bigger the sample＇s deformation and surface roughness, the shorter the incubation time of dechromization of copper alloy, and the lower the concentration and temperature of solution for the copper alloy dechromization. As a result, it can be concluded the deformation could increase the dechromization rate, and decrease the compactibility of the microstructure of the dechromization layer, but the surface roughness does not obviously affect the dechromization rate and the compactibility of the dechromization layer.

关 键 词：铜合金 脱铬腐蚀 表面粗糙度 变形 

分 类 号：TG172[金属学及工艺—金属表面处理]