Ni在熔融(Li,K)_2CO_3中的腐蚀行为  

CORROSION BEHAVIOR OF Ni IN THE MOLTEN (Li,K)_2CO_3

作　　者：王文[1] 曾潮流[1] 吴维 

机构地区：[1]中国科学院金属腐蚀与防护研究所

出　　处：《腐蚀科学与防护技术》1999年第6期351-355,共5页Corrosion Science and Protection Technology

基　　金：国家自然科学基金

摘　　要：采用电化学阻抗谱技术研究了Ｎｉ在６５０℃熔融（Ｌｉ，Ｋ）２ＣＯ３ 中的腐蚀行为．在自腐蚀电位下，Ｎｉ的腐蚀电化学阻抗谱呈典型的扩散控制特征，表面形成疏松的氧化膜，腐蚀速度较快．提出了相应的等效电路。Electrochemical impedance spectrum technique was employed to study the corrosion behavior of Ni in the molten (Li,K) 2CO 3 at 650℃. It is shown that the electrochemical impedance spectrum for the corrosion of Ni have the characteristics of diffusion\|controlled reaction. Ni suffers from fast corrosion, forming a porous oxide scale. A equivalent circuit representing the electrochemical impedance spectrum of Ni is proposed and the parameters in the equivalent circuit are also calculated.

关 键 词：熔融碳酸盐 电化学阻抗谱 镍 熔盐热腐蚀 

分 类 号：TG172.62[金属学及工艺—金属表面处理] TG146.15[金属学及工艺—金属学]