摘要
利用激光熔覆工艺在TC4表面制备出原位自生TiC陶瓷颗粒增强Ni基复合材料涂层.利用OM、XRD、SEM、EDS、EPMA对涂层组织结构进行了研究.结果表明:当激光比能为12.5 kJ/cm2时,可获得优异的复合涂层;复合涂层中以TiC为主的陶瓷颗粒增强相弥散地分布在-βTi和-γNi两相固溶体中;涂层显微硬度比基体显著提高.
In-situ synthesis of TiC ceramic particle reinforced Ni-base alloy composite coating was produced on TC4 surface by laser cladding. Microstructure on the coating is studied by OM, XRD, SEM, EDS, EPMA . Results show that excellent coating is obtained when the laser power is 2.5 kJ/cm2. Main phase in the coating is TiC particles distributing in the β-Ti and γ-Ni solid solution. The microhardness of the coating increases prominently compared with the matrix.
出处
《大连理工大学学报》
EI
CAS
CSCD
北大核心
2009年第3期369-373,共5页
Journal of Dalian University of Technology
基金
大连市基金资助项目(2006A10GX063)
关键词
钛合金
激光熔覆
涂层
显微组织
titanium alloy
laser cladding
coating
microstructure
