热等静压处理对铀表面铝镀层耐腐蚀性能的影响  

Effect of Hot Isostatic Pressing on Corrosion-Resistant Property of Aluminum Coating on Uranium Surface

作　　者：王庆富[1] 张羽廷[2] 谢东华[1] 张鹏程[2] 刘婷婷[2] 

机构地区：[1]中国工程物理研究院,四川绵阳621900 [2]表面物理与化学国家重点实验室,四川绵阳621907

出　　处：《稀有金属材料与工程》2011年第9期1671-1675,共5页Rare Metal Materials and Engineering

基　　金：表面物理与化学国家重点实验室基金(9140c660201080c6603)

摘　　要：采用热等静压(HIP)技术对铀表面铝镀层进行处理,利用电化学测试技术、扫描电镜(SEM)及X射线能谱(EDS)对样品在50μL/LCl-的KCl水溶液中的电化学腐蚀行为进行研究。结果表明:200℃,0.5h,60MPaHIP处理的铝镀层耐腐蚀性能优于未处理镀层;480℃,1.0h,60MPaHIP处理镀层的耐腐蚀性能下降较为明显;HIP处理后样品的腐蚀特征为典型的局部腐蚀,在腐蚀过程中会出现镀层的破裂、剥落。Aluminum coating on the uranium surface was treated with hot isostatic pressing （HIP）. Then the electrochemical corrosion behavior of samples in 50 μL/L Cl- KCl solution were investigated by electrochemical techniques,scanning electron microscopy （SEM） and energy dispersive spectrometer （EDS）. The results indicate that the corrosion-resistant property of the aluminum coating HIPed at 200 oC,0.5 h,60 MPa is better than that of the untreated coating,while the corrosion-resistant property is decreased for the coating with HIP at 480 oC,1.0 h,60 MPa. The corrosion characteristics of the HIPed aluminum coating is typical local corrosion,and the coating presents cracking and flaking off during corrosion process.

关 键 词：铀 铝镀层 热等静压 电化学腐蚀 

分 类 号：TG174.36[金属学及工艺—金属表面处理]