| 铜基体低压等离子体钨喷涂层激光重熔后的结构与性能 |
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| 引用本文： | 马文有,刘敏,周克崧,李福海,陈兴驰,佟鑫.铜基体低压等离子体钨喷涂层激光重熔后的结构与性能[J].材料保护,2010,43(6). |
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| 作者姓名： | 马文有 刘敏 周克崧 李福海 陈兴驰 佟鑫 |
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| 作者单位： | 广州有色金属研究院,广东,广州,510651;广州有色金属研究院,广东,广州,510651;广州有色金属研究院,广东,广州,510651;广州有色金属研究院,广东,广州,510651;广州有色金属研究院,广东,广州,510651;广州有色金属研究院,广东,广州,510651 |
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| 摘 要： | 在紫铜上直接喷涂的金属钨(W)层容易出现早期剥落。采用低压等离子体技术制备了Ni-Cu底层、Ni-W中间层和W层;利用大功率CO2激光束对W涂层重熔,研究了激光重熔处理对W涂层显微组织、致密度、结合强度及显微硬度的影响。结果表明:低压等离子喷涂的W层主要呈层状结构,W颗粒熔化不充分,涂层中存在大量的孔洞等缺陷;激光重熔后,W涂层表面的W颗粒已完全熔化,并在激光冷效应的作用下形成了一层厚度约为300μm的细晶组织,W涂层的致密度、结合强度得到了明显的提高。
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| 关 键 词： | 激光重熔 低压等离子喷涂 钨层 致密度 硬度 结合强度 |
Microstructure and Properties of Laser Remelted Low Pressure Plasma Sprayed Tungsten Coating on Copper Substrate |
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| MA Wen-you,LIU Min,ZHOU Ke-song,LI Fu-hai,CHEN Xing-chi,TONG Xin.Microstructure and Properties of Laser Remelted Low Pressure Plasma Sprayed Tungsten Coating on Copper Substrate[J].Journal of Materials Protection,2010,43(6). |
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| Authors: | MA Wen-you LIU Min ZHOU Ke-song LI Fu-hai CHEN Xing-chi TONG Xin |
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| Affiliation: | MA Wen-you,LIU Min,ZHOU Ke-song,U Fu-hai,CHEN Xing-chi,TONG Xin(Guangzhou Research Institute of Non-Fer-rous Metals,Guangzhou 510651,China) |
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| Abstract: | Bottom layer of Ni-Cu and intermediate layer of Ni-W were prepared on the surface of Cu substrate by using low pressure plasma spraying ( LPPS) technique,followed by deposition of W layer via the same route.The resulting W coating was then remelted using high-power CO2 laser beam.The effect of laser remelting on the microstructure,compactness,ad-hesion to substrate and microhardness of W coating was investiga-ted.Results show that the W coating prepared by LPPS has lay-ered structure and contains incomplete... |
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| Keywords: | laser remelting low pressure plasma spraying tung-sten coating compactness hardness adhesion |
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