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.
出处
《腐蚀科学与防护技术》
CAS
CSCD
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
关键词
熔融碳酸盐
电化学阻抗谱
镍
熔盐热腐蚀
Nickel, Molten carbonates, Electrochemical impedance spectrum, Molten salt corrosion
