Characteristics of Ni-based coating layer formed by laser and plasma cladding processes
Characteristics of Ni-based coating layer formed by laser and plasma cladding processes
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DOI：
10.1016/j.msea.2005.08.192
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发表时间：
2006-02-15
期刊：
影响因子：
6.4
通讯作者：
Zhang, H
中科院分区：
文献类型：
--
作者：
Xu, GJ;Kutsuna, M;Zhang, H
采用CO、激光和等离子熔覆工艺在SUS316L不锈钢表面制备了镍基合金熔覆层。采用CO2激光熔覆工艺获得了光滑的熔覆层。利用光学显微镜、扫描电镜、X射线衍射仪、电子探针和能谱仪对熔覆层的物相进行了分析。熔覆层组织为过共晶组织。初生相由硼化物CrB和碳化物Cr7C3组成。共晶组织由Ni + CrB或Ni + Cr7C3组成。与等离子熔覆相比，CO2激光熔覆获得了组织细小、稀释率低、维氏硬度高和耐磨性优异的熔覆层。结果表明，激光熔覆工艺具有较高的效率和良好的熔覆质量。(c)2005 Elsevier B.V.保留所有权利。
The clad layers of Ni-based alloy were deposited on the SUS316L stainless plates by CO, laser and plasma cladding processes. The smooth clad bead was obtained by CO2 laser cladding process. The phases of clad layer were investigated by an optical microscope, scanning electron microscopy (SEM), X-ray diffractometer (XRD), electron probe microanalysis (EPMA) and energy-dispersive spectrometer (EDS). The microstructures of clad layers belonged to a hypereutectic structure. Primary phases consist of boride CrB and carbide Cr7C3. The eutectic structure consists of Ni + CrB or Ni + Cr7C3. Compared with the plasma cladding, the fine microstructures, low dilutions, high Vickers hardness and excellent wear resistance were obtained by CO2 laser cladding. All that show the laser cladding process has a higher efficiency and good cladding quality. (c) 2005 Elsevier B.V. All rights reserved.