| 激光熔覆MoSi2金属硅化物复合材料涂层显微组织 |
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| 引用本文： | 吕旭东,王华明.激光熔覆MoSi2金属硅化物复合材料涂层显微组织[J].应用激光,2002,22(3):272-274. |
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| 作者姓名： | 吕旭东 王华明 |
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| 作者单位： | 北京航空航天大学材料学院激光材料加工与表面工程实验室,北京100083 |
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| 基金项目： | 北京市自然科学基金(2022012)资助 |
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| 摘 要： | MoSi_2以其高熔点(2030℃)、高使用温度(>1600℃)、良好的导热性和导电性等优良性能,被认为是继镍基高温合金之后极具竞争力的新型高温结构候选材料之一。但是,MoSi_2的低温脆性和中温氧化碎裂(PEST)难以克服。本文以Mo、Si合金粉末为原料,采用激光熔覆技术,在纯镍基材上制成MoSi_2金属硅化物复合材料涂层。分析了涂层的显微组织,测试了涂层的显微硬度。
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| 关 键 词： | 激光熔覆 MoSi_2复合材料 涂层 |
Microstructure of laser clad MoSi2 metal silicide composite coating |
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| X. D. La H. M. Wang.Microstructure of laser clad MoSi2 metal silicide composite coating[J].Applied Laser,2002,22(3):272-274. |
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| Authors: | X D La H M Wang |
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| Institution: | Beijing University of Aeronautics and Astronautics . Beijing 100083. P. R. China |
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| Abstract: | The metal siliclde MoSi2 is regarded as a promising candidate high-temperature structure material due to its outstanding balance of high melting point (2030℃ ) .lower density(6. 24g/cm3) , excellent oxidation resistance. MoSi2 metal silicide composite coating was fabricated on substrate of nickel- plate by laser cladding using Mo - Si elemental powder blends. Non -equilibrium rapid solidified microstructure was characterized by SEM.XRD and EDS. Microhardness of the composite coating was measured by MH6 semi automatic Vickers hardness tester. |
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| Keywords: | laser clad MoSi_2 composite coating |
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