电弧喷涂含TiB_2金属陶瓷复合涂层的性能  

Performance of Arc-Sprayed Cermet Composite Coating Doped with TiB_2

作　　者：李淑青[1] 贺定勇[2] 秦灏[2] 蒋建敏[2] 

机构地区：[1]北京航空制造工程研究所高能束流加工技术国防科技重点实验室,北京100024 [2]北京工业大学材料科学与工程学院,北京100022

出　　处：《材料保护》2005年第7期49-51,共3页Materials Protection

摘　　要：为了减少磨损给生产所带来的经济损失,利用电弧喷涂含TiB2的粉芯线材来制备含TiB2陶瓷的涂层,并对涂层的结合强度、硬度、抗热震性和耐磨粒磨损性能等进行了测试,利用金相显微镜、X射线衍射仪、扫描电子显微镜等对涂层进行测试分析,研究涂层磨损机理。研究结果表明,涂层结合强度达到49MPa,显微硬度达887HV,具有良好的抗热震性能,耐磨粒磨损性能比基体Q235钢提高了4.5倍。研制的涂层具有极大的实际应用和推广价值。The cermet composite coating doped with TiB_2 was prepared by arc spraying of the cored wires containing TiB_2. The bonding strength, hardness, thermal-shocking resistance, and abrasive resistance of the composite coating were investigated. The morphology, structure, and wear mechanism of the composite coating were analyzed using metallographic microscope, X-ray diffractometer, and scanning electron microscope. It was found that the developed powder-core wire had good spraying performance and comprehensive properties, and hence high application and popularization values as well. The TiB_2 dopant played a significant role in improving the comprehensive properties of the wire.

关 键 词：电弧喷涂 TIB2 粉芯线材 性能 

分 类 号：TG174.4[金属学及工艺—金属表面处理]