应用激光, 2017, 37 (2): 194, 网络出版: 2017-06-08   

高功率半导体激光熔覆Ni-B型石英纤维涂层组织及性能研究

Microstructure and Properties of Ni-B Quartz Fiber Composite Coatings by High Power Diode Laser Cladding
作者单位
1 南昌航空大学材料科学与工程学院, 江西 南昌 330063
2 天津工业大学激光技术研究所, 天津 300387
摘要
采用连续高功率半导体激光器在45#钢表面熔覆制备了Ni-B型石英纤维复合涂层, 通过光学显微镜(OM)、扫描电镜(SEM)及能谱仪(EDS)对涂层显微组织、成分进行了研究。结果表明, 涂层与基体结合良好, 呈冶金结合; 涂层内中间偏上位置有少量黑色泡状物, 直径为10~20 mm, V槽底部存在由B型石英纤维溶解而形成的凹槽, 且与周围Ni基及基体产生原子分子间扩散; 硬度测试表明, 涂层硬度呈阶梯状分布, 最高达445 HV0.3, 为基体的3.25倍。
Abstract
Ni-B quartz fiber composite coatings were prepared on 45 steel substrate by using a 3kW high power diode laser. The morphology of laser cladding layer is observed by optical microscope(OM) and scanning electronic microscope(SEM), the composition was analyzed through energy dispersive spectroscopy(EDS). The results show that the composite coating has a metallurgical bonding with substrate. There is a small amount of black bubbles in the middle of the coating, which diameter is between 10 mm and 20 mm. At the bottom of V-shaped cavity, there is a groove which caused by melted B type quartz fiber, which has spreaded on atomic or molecular sized level. Micro-hardness analysis shows that the coating hardness is ladder-like distribution, the highest micro-hardness is 445 HV0.3, that is 3.25 times than substrate.

王春霞, 顾振杰, 雷剑波, 陈晓明, 周圣丰. 高功率半导体激光熔覆Ni-B型石英纤维涂层组织及性能研究[J]. 应用激光, 2017, 37(2): 194. Wang Chunxia, Gu Zhenjie, Lei Jianbo, Chen Xiaoming, Zhou Shengfeng. Microstructure and Properties of Ni-B Quartz Fiber Composite Coatings by High Power Diode Laser Cladding[J]. APPLIED LASER, 2017, 37(2): 194.

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