SHS火焰喷涂梯度过渡陶瓷涂层的显微组织及耐磨性分析  

Analysis on Microstructure and Wear Resistance of Graded Ceramic Coatings by SHS Flame Spraying

作　　者：杨月英[1] 王建江[2] 

机构地区：[1]青岛理工大学,山东青岛266000 [2]石家庄军械工程学院先进材料研究所,河北石家庄050003

出　　处：《热加工工艺》2007年第11期38-41,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(No.50272084)

摘　　要：以Ti-B4C-C团聚粉和Ni-Al“自粘结”复合粉的混合物为自蔓延反应火焰喷涂体系,在45钢基体表面制备Ti(Cx,Ny)-TiB2和NimAln梯度过渡的复相陶瓷涂层,分析研究了梯度过渡涂层的显微组织结构与耐磨性。研究表明:Ti(Cx,Ny)-TiB2复相陶瓷与NimAln金属间化合物实现了沿涂层厚度方向的梯度过渡连接。梯度过渡陶瓷涂层的耐磨性是普通45钢耐磨性的14倍。Taking Ti-B4C-C and Ni-Al self-melt composite powders as reactive flame sprayed system, the complex phase ceramic coatinas of Ti （Cx, Ny） and TiB2-NimAln gradient transition were prepared on 45 steel substrate. The microstructure and wear resistance of the coatings were analyzed and studied. The results show that the complex phase coatings of Ti （Cx, Ny）-TiB2 and intermetallic compound of NimAln realize the gradient transition join along the vertical orientation of the coating thickness. The wear resistance of the coatings is 14 times of 45 steel.

关 键 词：SHS火焰喷涂 梯度涂层 金相组织 耐磨性 

分 类 号：TG174.453[金属学及工艺—金属表面处理]