感应熔覆原位合成TiC增强金属基复合涂层组织与抗磨性能的研究

Microstructure and Dry Sliding Wear Resistance of Induction Cladding In-situ Formed TiC Particle Reinforced Metal Matrix Composite Coatings

以N i60A、Ti粉和石墨粉为原料,利用感应熔覆技术在16Mn钢基材表面制备出原位自生TiC颗粒增强金属基复合涂层,分析了涂层的显微组织,在常温干滑动摩擦条件下评价了涂层的耐磨性能.结果表明:复合涂层由TiC颗粒、γ-N i奥氏体枝晶和枝晶间M23C6共晶组织组成;随着载荷增加,感应熔覆涂层磨损质量损失缓慢增大,16Mn钢磨损质量损失迅速增大,熔覆涂层具有优异的抗磨性能,其磨损机制主要为擦伤式磨损.

TiC particle reinforced metal matrix composite coating was fabricated on the substrate of 16 Mn steel by induetion cladding using Ni60A,titanium and carbon powder blends,Mierostructure of the cating was analyzed and wear resistance of the coating at room temperature was evaluated under sliding condition,Results show that the induction clad metal matrix composite coationg consists of TiC particle ,γ-Ni primary dendrite.interdendritic M23C6 eutectic structure,With the increase of load under room-temperature ,the wear mass loss of the composite coatings increases very slowly ,whereas that of 16Mn steel increases remarkably .The induction clad composite coating exhibited excellent room wear resistance ,The wear is dominated by abrasion.