WC-W_2C-VC颗粒增强镍基熔覆层的热力学研究  

Thermodynamic Study of Ni-based Cladding Layer Reinforced by WC-W_2C-VC Particles

作　　者：杨宁[1] 李立凯[2] 

机构地区：[1]河南教育学院物理与电子工程学院,河南郑州450046 [2]信息工程学院中州大学,河南郑州450044

出　　处：《应用激光》2015年第3期300-303,共4页Applied Laser

基　　金：河南省教育厅科学技术研究重点资助项目(项目编号:12A430006)

摘　　要：采用激光熔覆技术预置粉末法,制备WC-W2C-VC颗粒增强的镍基熔覆层,使用电子扫描电镜（SEM）和电子能谱（EDS）对熔覆层显微组织进行了分析,应用热力学原理对WC-W2C-VC颗粒的热力学过程进行了分析。结果表明,当温度在880~2 400K之间时,可以生成W2C、WC、VC等强化相颗粒,W2C、WC、VC等强化相颗粒均匀、细密分布在熔覆层中,可提高熔覆层硬度和耐磨性。Preset powder using the method of laser cladding technology,prepared Ni-based cladding layer reinforced by WC-W2C-VC particle,the microstructures of cladding layer were analyzed using scanning electron microscopy（SEM）and electron spectroscopy （EDS）and the thermodynamic processes of WC-W2C-VC particles were analyzed according to thermodynamic principles.The results show that the WC、W2C and VC and other reinforcing phase particles can be generated when the temperature is between about 880 - 2 400 K and the particles is distributed uniformly and compactly in cladding layer,the hardness and wear resistance of the cladding layer is improved greatly.

关 键 词：激光熔覆技术 WC-W2C-VC颗粒 镍基熔覆层 热力学 

分 类 号：TF125.1[冶金工程—粉末冶金]