| 热压烧结制备无粘结剂碳化钨硬质合金 |
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| 引用本文： | 刘芳,严峰,张勇,杨贺,陆兴.热压烧结制备无粘结剂碳化钨硬质合金[J].大连铁道学院学报,2011(1):56-60. |
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| 作者姓名： | 刘芳 严峰 张勇 杨贺 陆兴 |
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| 作者单位： | 大连交通大学材料科学与工程学院; |
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| 基金项目： | 辽宁省教育厅高等学校科研计划资助项目(2008095) |
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| 摘 要： | 利用球磨过程细化WC粉体颗粒,采用热压烧结的方法制备了具有较高硬度的无粘结剂WC硬质合金.扫描电镜观察结果表明,球磨后WC粉体颗粒明显变细,经热压烧结后形成组织致密的硬质合金,样品的显微硬度已经达到2294 HV;X-射线分析结果表明,热压烧结过程中,WC没有发生氧化脱碳现象.球磨处理使原始WC粉体颗粒积聚了很高的表面能和较大的畸变能,有利于烧结过程中WC粉末颗粒间冶金结合的形成.
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| 关 键 词： | WC硬质合金 球磨 热压烧结 显微硬度 |
Synthesis of Binderless WC Hard Alloy by Hot-press Sintering |
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| LIU Fang,YAN Feng,ZHANG Yong,YANG He,LU Xing.Synthesis of Binderless WC Hard Alloy by Hot-press Sintering[J].Journal of Dalian Railway Institute,2011(1):56-60. |
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| Authors: | LIU Fang YAN Feng ZHANG Yong YANG He LU Xing |
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| Institution: | LIU Fang,YAN Feng,ZHANG Yong,YANG He,LU Xing(Liaoning Key Materials Laboratory for Railway,School of Materials Science and Engineering,Dalian Jiaotong University,Dalian 116028,China) |
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| Abstract: | Binderless WC hard alloy is synthesized by ball-milling and hot-press sintering of WC powders.The observation under scanning electron microscopy(SEM) shows that,the WC powder becomes finer after ball-milling and dense hard alloy after hot-press sintering with a hardness of 2294 HV.X-ray diffraction(XRD) analysis demonstrates that,no oxidation and decarbonization occur during the hot-press sintering.High surface energy and distortion energy are supposed to be accumulated in the WC powder during ball milling,... |
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| Keywords: | WC hard alloy ball milling hot-press sintering microhardness |
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