Corrosion phenomena in sodium-potassium coolant resulting from solute interaction in multicomponent solution

International Conference on Mechanical Engineering, Automation and Control Systems 2017

机械制造;无线电电子学;计算机科学

Krasin, V.P.^1 ; Soyustova, S.I.^1

Moscow Polytechnic University, Bolshaya Semenovskaya St., 38, Moscow

107023, Russia^1

关键词: Calculation results;    Corrosion phenomena;    Mathematical frameworks;    Multicomponent solutions;    Non-isothermal condition;    Regular solution model;    Threshold concentrations;    Transitional metals;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/327/3/032030/pdf
DOI  :  10.1088/1757-899X/327/3/032030

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The solubility of Fe, Cr, Ni, V, Mn and Mo in sodium-potassium melt has been calculated using the mathematical framework of pseudo-regular solution model. The calculation results are compared with available published experimental data on mass transfer of components of austenitic stainless steel in sodium-potassium loop under non-isothermal conditions. It is shown that the parameters of pair interaction of oxygen with transition metal can be used to predict the corrosion behavior of structural materials in sodium-potassium melt in the presence of oxygen impurity. The results of calculation of threshold concentration of oxygen of ternary oxide formation of sodium with transitional metals (Fe, Cr, Ni, V, Mn, Mo) are given in conditions when pure solid metal comes in contact with sodium-potassium melt.