| 激光熔覆原位自生复合材料涂层的研究 |
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| 引用本文： | 张维平,马玉涛,刘硕. 激光熔覆原位自生复合材料涂层的研究[J]. 激光技术, 2005, 29(1): 38-39,55 |
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| 作者姓名： | 张维平 马玉涛 刘硕 |
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| 作者单位： | 大连理工大学,材料工程系,大连,116023;大连理工大学,材料工程系,大连,116023;大连理工大学,材料工程系,大连,116023 |
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| 摘 要： | 利用激光熔覆技术,使用HL-1500型CO2激光器在45#钢表面制备出原位自生成的Ni基金属陶瓷TiB2层.并采用现代化分析手段对涂层的宏观形貌,显微组织特征和元素分部进行了系统的观察和分析.研究结果表明,熔覆合金层显微组织由枝晶固溶体及其间细密的共晶组织组成,涂层中存在γ-Fe,γ-Ni,TiB2,TiB和少量的Ni4B3.
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| 关 键 词： | 激光熔覆 TiB2 金属陶瓷涂层 显微组织 |
| 文章编号： | 1001-3806(2005)01-0038-02 |
| 收稿时间： | 2003-12-24 |
| 修稿时间： | 2004-06-02 |
Microstructural characterization of in situ formed composite coating produced by laser cladding |
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| ZHANG Wei-ping,MA Yu-tao,LIU Shuo. Microstructural characterization of in situ formed composite coating produced by laser cladding[J]. Laser Technology, 2005, 29(1): 38-39,55 |
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| Authors: | ZHANG Wei-ping MA Yu-tao LIU Shuo |
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| Abstract: | Ni-TiB2 ceramic-metal composite coating is cladded on the surface of 45# steel by CO2 laser melting a precursor mixture of nickel based alloy powder,boron and titanium powders.Microstructure of cladded layer is systematically studied by means of EPMA,TEM and XRD.The results show that the coating mainly consists of γ-Fe,γ-Ni dendrite solid solution and TiB2,TiB particles and a small a mount of Ni4B3. |
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| Keywords: | laser cladding TiB 2 ceramic-metal composite coating microstructure |
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