奥氏体不锈钢304、316L和321在熔融硝酸盐中的耐腐蚀性  

Corrosion Resistances of 304,316L and 321 Austenite Stainless Steel in Nitrate Molten Salt

作　　者：肖扬[1] 丁柳柳[2] 廖文俊[2] 张艳梅[2] 胡捷[2] 丁晓红[1] 

机构地区：[1]上海理工大学机械工程学院,上海200093 [2]上海电气集团股份有限公司中央研究院,上海200070

出　　处：《材料导报（纳米与新材料专辑）》2016年第1期217-219,共3页

基　　金：上海市重大技术装备研制专项项目基金(ZB-ZBYZ-02-14-1049)

摘　　要：太阳能热发电系统中,储热系统是其中重要的一环。熔盐作为储热和传热介质,其研究与应用越来越广泛,但熔融硝酸盐的腐蚀现象依然是不能忽视的问题。针对不锈钢在熔融硝酸盐中的腐蚀问题,利用静态浸泡法,研究了530℃、氮气气氛下,3类奥氏体不锈钢在2种硝酸盐体系中的腐蚀行为,并探讨了不锈钢在熔融硝酸盐中的腐蚀机理,为今后太阳能热发电关键部件选材提供参考依据。In solar thermal power system,heat storage is one of the important parts.As a heat transfer and thermal storage medium,the research and application of molten salt have become more and more popular.But the corrosion of molten nitrate salt is still a problem which can′t be neglected.This paper focused on the problem of molten nitrate salt corrosion.Under nitrogen,corrosion tests were conducted with three kinds of austenitic stainless steel at530 ℃in two molten salt systems by static immersion tests.In addition,the article elaborated the corrosion mechanism of stainless steel in nitrate molten salt,and provided a reference for key components selection in solar thermal power generation.

关 键 词：熔融硝酸盐 腐蚀 不锈钢 太阳能热发电 

分 类 号：TG172.2[金属学及工艺—金属表面处理]