等离子束熔覆铁基合金涂层的组织与性能研究  

Study on microstructure and performance of Fe-base alloy coating produced by plasma cladding

作　　者：刘邦武[1] 李惠琪[1] 孙玉宗[1] 

机构地区：[1]山东科技大学材料科学与工程学院,山东青岛266510

出　　处：《材料科学与工艺》2006年第1期85-87,共3页Materials Science and Technology

基　　金：山东省自然科学基金资助项目(Y2002F12);山东省优秀中青年科学家科研奖励基金资助项目(02BS057)

摘　　要：利用等离子熔覆技术,在钢基体表面熔覆了一层铁基合金,获得了与基体呈冶金结合的、性能良好的涂层;采用金相显微镜对熔覆层的组织进行观察,发现熔覆层整体组织由柱状树枝晶向等轴晶转变,无气孔、夹杂,其中枝晶组织粗大,等轴晶组织细小;利用显微硬度计分析表明,熔覆层具有较高的硬度,并且由表面到基体呈梯度分布;磨损试验结果表明熔覆层的耐磨性是淬火45钢的2.56倍.In the paper, plasma cladding processing was performed using Fe - based powder on steel substrate. The coating obtained is well bonded with the substrate. The microstructure and properties of the coating have been analysed. There is no void and inclusion in the layer. The arborescent structure is coarse and equiax crystal is minute. The microhardness of the coating is high and the wear resistance of the coating is as 2. 56 times that of quenched 45 steel.

关 键 词：等离子束 熔覆 铁基合金 组织 性能 

分 类 号：TG142[一般工业技术—材料科学与工程]