QAl-9-2合金在3.5%NaCl溶液中脱合金腐蚀研究  

STUDY ON DEALLOYING CORROSION OF QAl-9-2 ALLOY IN 3.5%NaCl SOLUTION

作　　者：韩忠[1] 何毓璠 林海潮 赵晖[2] 

机构地区：[1]中国科学院金属腐蚀与防护研究所金属腐蚀与防护国家重点实验室,沈阳110015 [2]沈阳工业学院材料科学与工程系,沈阳110015

出　　处：《金属学报》2000年第5期521-524,共4页Acta Metallurgica Sinica

基　　金：海军论证中心资助! G19990650

摘　　要：利用扫描隧道显微镜（ＳＴＭ）对 ＱＡｌ－９－２合金在３．５％ ＮａＣｌ溶液中脱合金腐蚀的早期过程进行了原位观察结合ＳＥＭ，ＥＤＸ分析表明，ＱＡｌ－９－２合金的脱合金腐蚀首先发生在α基体和亚稳β相的界面，并在亚稳β相内继续扩展．α相不发生脱合金腐蚀．ＳＴＭ原位观察没有发现钢在表面再沉积的现象．In situ STM observation of the development of dealloying corrosion of QAI-9-2 alloy at an early stage was carried out. Combining SEM observation and EDX analysis, it has been indicated that dealuminization corrosion of QAl-9-2 alloy occurs first at the interface of the α matrix and metastable β phase, and then develops within metastable β phase. The α matrix in QAl-9-2 alloy is resistant to marine environment. No copper redepposition on the surface is in situ observed.

关 键 词：铜合金 脱合金腐蚀 氯化钠溶液 

分 类 号：TG172.2[金属学及工艺—金属表面处理] TG146.11[金属学及工艺—金属学]