CAJ | 학술논문

以粉末化学镀法制备的Cr_3C_(2-)Ni复合粉末作为预置层,在Q235钢板表面用激光熔覆技术制备了减摩复合涂层.研究了Cr_3C_(2-)-Ni涂层在干摩擦条件下的减摩性能,并对磨损形貌进行了SEM观察,对涂层的硬度进行了测试.结果表明,该涂层组织均匀致密、硬度较高;涂层的摩擦性能稳定,摩擦系数为0.44;硬质Cr_3C_(2-)粒子与金属粘结相的配合能有效提高熔覆层的承载能力,减小摩擦损失.
이분말화학도법제비적Cr_3C_(2-)Ni복합분말작위예치층,재Q235강판표면용격광용복기술제비료감마복합도층.연구료Cr_3C_(2-)-Ni도층재간마찰조건하적감마성능,병대마손형모진행료SEM관찰,대도층적경도진행료측 시.결과표명,해도층조직균균치밀、경도교고;도층적마찰성능은정,마찰계수위0.44;경질Cr_3C_(2-)입자여금속점결상적배합능유효제고용복층적승재능력,감소마찰손실.
Cr_3C_2-Ni composite powders were synthesized by powder electroless plating method and performed as precoated layer in laser cladding in order to obtain antifriction coatings on Q235 steel plate. Dry friction properties of the laser cladding coatings were investigated. The wear morphology and hardness of the coating was observed and tested, respectively. The results show that, the coatings have uniform and dense microstructure, and relatively high hardness as well. The laser cladding coatings perform stable friction state and friction coefficient is 0.44. The good properties benefit from the carbide and metallic binding phase.