A review on molten sulfate salts induced hot corrosion

作     者：Shanshan Hu Harry Finkle Xingbo Liu Shanshan Hu;Harry Finklea;Xingbo Liu

作者机构：Mechanical&Aerospace Engineering DepartmentBenjamin M.Statler College of Engineering&Mineral ResourcesWest Virginia UniversityMorgantownWV 26506-6106USA C.Eugene Bennett Department of ChemistryWest Virginia UniversityMorgantownWV 26506USA 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2021年第90卷第31期

页      面：243-254页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：funded by the U.S.Department of Energy National Energy Technology Laboratory(NETL)under the contract number DE-FE0031548 

主　　题：Hot corrosion Molten sulfate salts Protective oxide layer Dissolution Anti-corrosion coatings 

摘      要：Hot corrosion has been extensively observed in various high temperature applications,which might cause large economic *** deepen the insight and understanding of hot corrosion,herein,we provide a detailed discussion on hot corrosion induced by molten sulfate salt,in which Na_(2)SO_(4)is the main chemical *** hot corrosion is triggered and sustained by the negative solubility gradient of protective oxide from the oxide/salt interface to salt/gas *** this work,we reviewed several key factors,including temperature,gas composition,molten salt composition,alloy element and external stress,influencing the hot corrosion of alloy beneath the molten *** application of anti-corrosion coating seems to be the most effective and commercial mothed to mitigate hot ***,the progress of the development of effective coatings,e.g.,Ni-Cr coatings,aluminide coatings,silicide coatings and MCrAlY(X)coatings,has also been summarized.