| 等离子喷涂法纳米结构WC-12Co涂层的微结构与形成机理的研究 |
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| 引用本文： | 李博宇,董星龙,刘圆圆,杨明川,刘方军.等离子喷涂法纳米结构WC-12Co涂层的微结构与形成机理的研究[J].材料工程,2006(6):40-45. |
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| 作者姓名： | 李博宇 董星龙 刘圆圆 杨明川 刘方军 |
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| 作者单位： | 大连理工大学,三束国家重点实验室,辽宁,大连,116023;中国科学院,金属研究所,沈阳,110016;北京航空工艺研究所,北京,100024 |
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| 基金项目： | 国防科技重点实验室基金 |
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| 摘 要： | 使用独特的雾化干燥结合固定床技术合成WC-12Co纳米复合粉体,利用等离子喷涂法制备纳米结构WC-12Co涂层,通过X射线衍射、扫描电镜、透射电镜等分析手段对等离子喷涂纳米结构WC-12Co涂层进行显微结构分析.结果表明涂层中除了WC相,不仅有W2C,W等非WC/Co相的产生,还出现了CoxWyCz(Co3W9C4,Co3W3C),Co3C等相及非晶和孪晶组织,在此基础上本工作将对等离子喷涂纳米结构WC-12Co涂层的形成机理作初步的研究与讨论.
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| 关 键 词： | 等离子喷涂 纳米复合粉体 纳米结构涂层 显微结构 形成机理 |
| 文章编号： | 1001-4381(2006)06-0040-06 |
| 收稿时间： | 2005-05-10 |
| 修稿时间： | 2005-09-15 |
Microstructure and Formation Mechanism of Nanostructured WC-12Co Coatings Deposited by Plasma Flame Spray |
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| LI Bo-yu,DONG Xing-long,LIU Yuan-yuan,YANG Ming-chuan,LIU Fang-jun.Microstructure and Formation Mechanism of Nanostructured WC-12Co Coatings Deposited by Plasma Flame Spray[J].Journal of Materials Engineering,2006(6):40-45. |
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| Authors: | LI Bo-yu DONG Xing-long LIU Yuan-yuan YANG Ming-chuan LIU Fang-jun |
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| Affiliation: | 1 State Key Laboratory for Materials Modification by Laser, Ion and Electron Beams, Dalian University of Technology, Dalian 116023, Liaoning, China; 2 Institute of Metal Research (IMR |
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| Abstract: | The precursor of WC-12Co nano-composite powder is synthesized by the larruping method of spray drying and fixed bed technique,nanostructured WC-12Co cermet coatings are deposited by plasma flame spray.Microstructure of nanostructured WC-12Co cermet coatings is evaluated by using X-ray diffraction(XRD),scanning electron microscopy(SEM) and transmission electron microscopy(TEM).The nano-composite WC-12Co powders generally contain WC and Co,whereas the phases W2C,W and Co3C,Co3W9C4,Co3W3C/amorphous binder phases based on Co and nano-twins occur in coatings,the mechanism of formation of nanostructured WC-12Co cermet coatings is discussed on the basis of the microstructure in this paper. |
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| Keywords: | plasma spray nanocomposite powder nanostructured coating microstructure mechanism of formation |
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