Ni/AlN Composite Coating for Corrosion and Elements Interdiffusion Resistance in Molten Fluoride Salts System

作     者：Chengxu Wang Wei Chen Minghui Chen Demin Chen Fuhui Wang Chengxu Wang;Wei Chen;Minghui Chen;Demin Chen;Fuhui Wang

作者机构：School of Nuclear Equipment and Nuclear EngineeringYantai UniversityYantai 264005China Shi-Changxu Innovation Center for Advanced MaterialsInstitute of Metal ResearchChinese Academy of SciencesShenyang 110016China Shenyang National Laboratory for Materials ScienceNortheastern UniversityShenyang 110819China 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2021年第34卷第12期

页      面：1704-1714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：This work was financially supported by the Youth Innovation Promotion Association of Chinese Academy of Sciences 

主　　题：Molten salt Superalloy Composite coating High temperature corrosion 

摘      要：The Ni/AlN composite coating was prepared for increasing corrosion and elements interdiffusion resistance of GH3535 alloy in molten fluoride salts,and the effect of mechanical interlocking on adhesion strength between AlN layer and nickel coating was also *** indicated that the adhesion strength between AlN layer and nickel coating could be significantly enhanced through mechanical interlocking effect,which effectively prevented the nickel coating from flaking off at elevated *** an etching pre-treatment of AlN layer,the corrosion resistance of the Ni/AlN coated GH3535 alloy in molten FLiNaK salt was further improved,and elements interdiffusion between the substrate and nickel coating was completely *** layer as a diffusion barrier remained compact and continuous in Ni/GH3535 system after high-temperature molten salt ***,a Ni-P layer consisting of Ni3P and Ni phases formed in the Ni coating after corrosion.