| VC添加量对纳米晶硬质合金的制备及性能影响 |
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| 引用本文： | 刘雪梅,王海滨,宋晓艳,王瑶,高杨,王西龙.VC添加量对纳米晶硬质合金的制备及性能影响[J].稀有金属材料与工程,2016,45(2):477-481. |
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| 作者姓名： | 刘雪梅 王海滨 宋晓艳 王瑶 高杨 王西龙 |
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| 作者单位： | 北京工业大学材料学院,北京工业大学材料学院,北京工业大学材料学院,北京工业大学材料学院,北京工业大学材料学院,北京工业大学材料学院 |
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| 基金项目： | 国家高技术研究发展计划（863计划）;国家重点基础研究发展计划（973计划）;国家自然科学基金项目（面上项目）;北京市自然科学基金 |
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| 摘 要： | 以钨钴氧化物、炭黑和VC为原料,采用原位还原碳化法制备WC-Co复合粉末,将复合粉末进行放电等离子烧结致密化制备WC-Co硬质合金块体材料。研究了不同VC添加量的复合粉末和块体材料的相组成、显微组织和性能,结果表明:VC的添加量对复合粉末的相组成、合金的晶粒尺寸和性能具有重要的影响,原料中添加2.0%VC(质量分数)时可获得平均晶粒尺寸为101 nm,相组成仅为WC和Co且具有高硬度和良好韧性的硬质合金块体材料。
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| 关 键 词： | WC-Co硬质合金 VC添加量 性能 |
| 收稿时间： | 2014/3/22 0:00:00 |
| 修稿时间： | 2014/7/17 0:00:00 |
Effect of VC addition on preparation and mechanical properties of nanocrystalline WC-Co alloys |
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| Liu Xuemei,Wang Haibin,Song Xiaoyan,Wang Yao,Gao Yang and Wang Xilong.Effect of VC addition on preparation and mechanical properties of nanocrystalline WC-Co alloys[J].Rare Metal Materials and Engineering,2016,45(2):477-481. |
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| Authors: | Liu Xuemei Wang Haibin Song Xiaoyan Wang Yao Gao Yang and Wang Xilong |
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| Affiliation: | College of Materials Science and Engineering, Beijing University of Technology,College of Materials Science and Engineering, Beijing University of Technology,College of Materials Science and Engineering, Beijing University of Technology,College of Materials Science and Engineering, Beijing University of Technology,College of Materials Science and Engineering, Beijing University of Technology,College of Materials Science and Engineering, Beijing University of Technology |
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| Abstract: | VC was added to the raw oxide materials which were synthesized to the nanocrystalline WC-Co composite powder by the in-situ reduction and carbonization process. The nanocrystalline WC-Co alloys were fabricated by the spark plasma sintering technique using the prepared WC-Co composite powder. The phase constitution microstructure characteristics and mechanical properties of the sintered cemented carbides were analyzed. The study proposed that VC plays a significant role in decrease the grain size of the prepared WC-Co alloy. The nanocrystalline WC-Co alloy with high hardness and good fracture toughness properties can be obtained as the amount of VC addition is appropriate. |
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| Keywords: | WC-Co cemented carbides VC addition properties |
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