CrAlY粉末粒径对NiCrAlY复合电镀层组织结构和性能的影响  

Effect of particle size of CrAlY powder on microstructure and properties of electroplated NiCrAlY composite coating

作　　者：黄凌峰 刘建明 王帅 郭睿 HUANG Lingfeng;LIU Jianming;WANG Shuai;GUO Rui(General Research Institute of Mining and Metallurgy Technology Group Co.,Ltd.,Beijing 100160,China;Beijing Engineering Technology Research Center of Surface Strengthening and Repairing of Industry Parts,Beijing 102206,China;Beijing Key Laboratory of Special Coating Material and Technology,Beijing 102206,China)

机构地区：[1]矿冶科技集团有限公司,北京100160 [2]北京市工业部件表面强化与修复工程技术研究中心,北京102206 [3]特种涂层材料与技术北京市重点实验室,北京102206

出　　处：《电镀与涂饰》2023年第23期17-24,共8页Electroplating & Finishing

基　　金：矿冶科技集团专项科研基金(JTZX22-492)。

摘　　要：NiCrAlY复合镀层的组织结构对其服役性能影响重大,而CrAlY粉末粒径是决定电沉积制备的NiCrAlY复合镀层组织结构的关键因素之一,它对NiCrAlY复合镀层的元素含量、与基体结合强度、表面粗糙度和内部致密度均有显著影响,进而影响NiCrAlY复合镀层的抗高温氧化性和耐磨性。本文研究了不同粒径CrAlY粉末制备的NiCrAlY复合镀层与基体的结合力、表面粗糙度、组织均匀性和致密性,以及NiCrAlY作为粘结层时所得NiCrAlY-SiC复合镀层的组织结构和耐磨性。实验结果显示,小粒径CrAlY粉末更易制得与基体结合力高、内部组织致密的NiCrAlY复合镀层,随后制得的NiCrAlY-SiC复合镀层也具有更优异的抗高温氧化性,在与NiCoCrAlY涂层进行高温高速对磨时展现出更好的耐磨性。The microstructure of NiCrAlY composite coating has a great influence on its service performance.The particle size of CrAlY powder is one of the key factors affecting the microstructure of electroplated NiCrAlY composite coating.It has a significant impact on the elemental composition,adhesion strength,surface morphology,and inner compactness of NiCrAlY composite coating,and finally affects its high-temperature oxidation resistance and wear resistance.In this paper,the adhesion,surface roughness,microstructure uniformity,and compactness of NiCrAlY composite coating electroplated with CrAlY powder of different particle sizes were studied.The microstructure and wear resistance of NiCrAlY-SiC composite coating prepared with NiCrAlY as adhesive layer were also studied.The experimental results showed that NiCrAlY composite coatings with high adhesion and compact structure could be more easily formed when using small-sized CrAlY powder.The NiCrAlY-SiC composite coating electroplated with small-sized CrAlY powder had excellent high-temperature oxidation resistance,and showed better wear resistance when it was rubbed against NiCoCrAlY coating at high temperature and high speed.

关 键 词：镍铬铝钇镀层 粉末粒径 复合电镀 组织结构 抗高温氧化性 耐磨性 

分 类 号：TQ153.2[化学工程—电化学工业]