Al-9Si-10Cu储能材料对0Cr18Ni9钢的腐蚀行为研究  

Research on corrosion behavior of Al-9Si-10Cu energy storage material to 0Cr18Ni9 steel

作　　者：张潇华[1] 夏志增 郭丽娟[1] 张浩 

机构地区：[1]中国石油大学胜利学院,山东东营257061

出　　处：《世界有色金属》2017年第24期13-15,共3页World Nonferrous Metals

基　　金：教育部中央高校基本科研业务费专项资金资助项目(No.11CX05003A);国家级大学生创新训练项目(201713386029)

摘　　要：铝合金是比较理想的中高温储能材料,但在高温时易腐蚀金属容器,所以在实际工程应用时,需控制储能铝合金对容器的腐蚀。通过设置合理的腐蚀试验,研究了储能温度和储能时间分别对Al-9Si-10Cu储能材料腐蚀容器0Cr18Ni9钢的影响规律以及相应的腐蚀机理,结果表明:腐蚀速率和腐蚀层厚度随储能温度的升高而逐渐增加;腐蚀速率随着储能时间的延长逐渐下降并趋于稳定,腐蚀层厚度却随储能时间的延长而不断增加;腐蚀层由两个区域组成,两者的颜色不同且具有明显的分界线;随着储能时间的延长,腐蚀层B区域的宽度几乎保持不变,而腐蚀层C区域却逐渐疏松并剥落,以致0Cr18Ni9钢被逐渐腐蚀。The aluminum alloy is an ideal medium-high temperature energy storage material,but it is easy to corrode metal container at high temperature.Therefore,it is necessary to control the corrosion of aluminum alloy energy storage to the container in practical engineering application.By designing a reasonable corrosion test,the influence rule of energy storage temperature and time on Al-9 Si-10 Cu energy storage material corroding the 0 Cr18 Ni9 steel vessel and the corresponding corrosion mechanism were studied.The results show that the corrosion rate and the thickness of corrosion layer gradually increase with the energy storage temperature increasing.With the increase of energy storage time,the corrosion rate decreases gradually and tends to be stable,but the erosion layer thickness increases.The corrosion layer is composed of two regions,which are different in color and have distinct dividing lines.With the energy storage time increasing,the width of the corrosion layer B almost remains unchanged,while the corrosion layer C gradually becomes loose and spalling,so that 0 Cr18 Ni9 steel is corroded gradually.

关 键 词：Al-9Si-10Cu储能材料 0CR18NI9钢 储能温度 储能时间 腐蚀机理 

分 类 号：TG174[金属学及工艺—金属表面处理]