| 微波烧结超细WC-8Co硬质合金中的脱碳及其改进(英文) |
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| 引用本文： | 鲍瑞,易健宏,彭元东,张浩泽,李爱坤. 微波烧结超细WC-8Co硬质合金中的脱碳及其改进(英文)[J]. 中国有色金属学会会刊, 2012, 22(4): 853-857. DOI: 10.1016/S1003-6326(11)61256-9 |
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| 作者姓名： | 鲍瑞 易健宏 彭元东 张浩泽 李爱坤 |
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| 作者单位： | 中南大学粉末冶金国家重点实验室;昆明理工大学材料科学与工程学院 |
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| 基金项目： | Project (2008890) supported by the Scientific Research Foundation for the Returned Overseas Chinese Scholars,China |
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| 摘 要： | 通过微波烧结技术制备超细WC-Co硬质合金。烧结过程中在试样的表层形成脱碳相W3Co3C。在混料过程中添加炭黑,研究碳含量与合金力学性能之间的关系。结果表明:当碳含量为0.45%时,合金的硬度和断裂强度达到最大值,分别为HRA93.2和3396MPa。SEM观察发现在微波烧结超细硬质合金过程中,WC晶粒的长大主要为初期的合并长大。
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| 关 键 词： | 硬质合金 微波烧结 碳含量 力学性能 |
| 收稿时间： | 2011-04-22 |
Decarburization and improvement of ultra fine straight WC-8Co sintered via microwave sintering |
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| BAO Rui,YI Jian-hong,PENG Yuan-dong,ZHANG Hao-ze,LI Ai-kun. Decarburization and improvement of ultra fine straight WC-8Co sintered via microwave sintering[J]. Transactions of Nonferrous Metals Society of China, 2012, 22(4): 853-857. DOI: 10.1016/S1003-6326(11)61256-9 |
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| Authors: | BAO Rui YI Jian-hong PENG Yuan-dong ZHANG Hao-ze LI Ai-kun |
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| Affiliation: | 1.State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China;2.School of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 650093,China |
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| Abstract: | Cemented tungsten carbide with ultra fine grains was prepared via microwave sintering.η phase(W3Co3C) was formed on the surface of the samples during the preparation process.Extra carbon black was premixed and the influence of carbon content on mechanical properties was studied.The results show that the maximum value of hardness and transverse rupture strength are HRA 93.2 and 3396 MPa respectively when the carbon black content is 0.45%.The microstructure investigated by SEM show that the WC grains growth mainly occurs during the early stage of microwave sintering by the coalescence of grains. |
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| Keywords: | cemented carbide microwave sintering carbon content mechanical properties |
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