NiCrFe-Cr_2C_3合金超音速活性电弧喷涂涂层性能的研究  

Study on the Property of NiCrFe-Cr_2C_3 Coating by Supersonic Arc Spraying

作　　者：李尚周[1] 聂铭 余红雅[1] 董重里[1] 谭永源[1] 丁红珍[1] 

机构地区：[1]华南理工大学机械工程学院焊接研究所,广东广州510640 [2]广东省电力工业局试验研究所,广东广州510640

出　　处：《表面技术》2003年第4期15-17,21,共4页Surface Technology

摘　　要：采用超音速活性电弧喷涂 (HVAA)系统对适用于锅炉四管喷涂用的NiCrFe Cr2 C3合金进行了喷涂试验 ;通过金相组织研究、SEM检测以及X射线衍射分析 ,证明其具有良好的组织形貌 ;同时HVAA所制备的NiCrFe Cr2 C3合金涂层的性能相对于普通电弧喷涂涂层 ,除了更致密并具有更高的硬度外 ,涂层成分还具有更多的金属间化合物或络合物 。In this paper the principle and technology of supersonic arc spraying High Velocity Activated Arc(HVAA)spraying are studied. In order to investigate its application in the 'four pipes' of boilers ', NiCrFe Cr2C3 alloy coatings are made, and phase experiment, SEM test, X ray diffraction experiment and bonding strength experiment are applied to those samples. As a new technology in arc spraying, HVAA has more advantage than other normal arc sprayings, such as higher bonding strength, high hardness, and lower void ratio, multi phases are found to form in the coatings, this may have good influence on the characteristic of the coatings of HVAA coatings.

关 键 词：超音速 活性电弧 电弧喷涂 涂层 

分 类 号：TG174.441[金属学及工艺—金属表面处理] TG115.58[金属学及工艺—金属学]