| 双尺度结构WC-12Co涂层的冷喷涂制备 |
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| 引用本文： | 高培虎,杨冠军,李毅功,李长久.双尺度结构WC-12Co涂层的冷喷涂制备[J].广东有色金属学报,2009(1). |
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| 作者姓名： | 高培虎 杨冠军 李毅功 李长久 |
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| 作者单位： | 西安交通大学金属材料强度国家重点实验室; |
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| 基金项目： | 教育部重点项目(106145); 国家自然科学基金(50571080); 国家杰出青年基金(505725101) |
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| 摘 要： | 以微米颗粒结构的传统WC-Co粉末为原料,采用球磨的方法,制备双尺度结构的WC-12Co粉末,采用冷喷涂方法制备双尺度结构WC-12Co涂层.通过扫描电镜观察发现,涂层及喷涂粉末中WC颗粒的粒度呈双峰分布.通过X射线衍射分析比较球磨前后粉末、喷涂粉末及涂层的相结构,发现在涂层制备过程中WC和Co两相结构能够在涂层中完全保留下来.涂层的硬度及断裂韧性分别为1650 Hv(0.3)和13.9 MPa.m1/2.
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| 关 键 词： | 冷喷涂 WC-Co 涂层 硬度 韧性 |
Preparation of bimodal WC-12Co coatings by cold spraying |
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| GAO Pei-hu,YANG Guan-jun,LI Yi-gong,LI Chang-jiu.Preparation of bimodal WC-12Co coatings by cold spraying[J].Journal of Guangdong Non-Ferrous Metals,2009(1). |
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| Authors: | GAO Pei-hu YANG Guan-jun LI Yi-gong LI Chang-jiu |
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| Affiliation: | GAO Pei-hu,YANG Guan-jun,LI Yi-gong,LI Chang-jiu(State Key Laboratory for Mechanical Behavior of Materials,School of Materials Science and Engineering,Xi'an Jiaotong University,Xi'an 710049,China) |
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| Abstract: | Bimodal-sized WC particles were prepared by ball-milling process.Spray powder was fabricated by sinter-crushing of ball-milled powders.Bimodal WC-12Co coating was deposited by cold spraying.It was found that the WC particle size distribution in the coating was the same as the that of the powder through SEM analysis.The XRD results showed that the WC and cobalt phases were retained into the coating from powders.The hardness tests yielded a coating hardness of 1650 Hv0.3,which was comparable to that of bulk n... |
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| Keywords: | cold spray WC-Co coating hardness fracture toughness |
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