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以Ti粉、BN粉和Ni60A粉为原料,利用氩弧熔覆技术,在35CrMnSi钢表面原位合成了TiN+TiB_2增强镍基复合材料涂层,借助X射线衍射仪、扫描电子显微镜、透射电子显微镜及能谱分析对熔覆涂层的物相及微观组织进行表征。结果表明,复合涂层的物相主要由Cr_(23)C_6、TiB_2、TiN和γ-Ni组成;原位合成的TiN和TiB_2颗粒分别以颗粒状和棒状均弥散分布于熔覆层中;通过HREM可以确定TiN与γ-Ni基体存在(111)TiN//(111)γ-Ni,(111)TiN//(220)γ-Ni,(220)TiN//(313)γ-Ni的关系。
Using Ti powder, BN powder and Ni60A powder as raw materials, the TiN + TiB_2 reinforced Ni-based composite coatings were synthesized in situ on the surface of 35CrMnSi steel by argon arc cladding technique. XRD, SEM, Microstructure and microstructure of the cladding coatings were characterized by microscopy and energy spectrum analysis. The results show that the phase of the composite coating mainly consists of Cr 23 C 6, TiB 2, TiN and γ-Ni. The in-situ synthesized TiN and TiB 2 particles are dispersed in the cladding layer with granular and rod- HREM can determine the relationship between TiN and (111) TiN // (111) γ-Ni, (111) TiN // (220) γ-Ni and (220) TiN // .