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VC添加量對納米晶硬質(zhì)合金的制備及性能影響
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北京工業(yè)大學(xué)材料學(xué)院,北京工業(yè)大學(xué)材料學(xué)院,北京工業(yè)大學(xué)材料學(xué)院,北京工業(yè)大學(xué)材料學(xué)院,北京工業(yè)大學(xué)材料學(xué)院,北京工業(yè)大學(xué)材料學(xué)院

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TF124

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國家高技術(shù)研究發(fā)展計劃（863計劃）;國家重點基礎(chǔ)研究發(fā)展計劃（973計劃）;國家自然科學(xué)基金項目（面上項目）;北京市自然科學(xué)基金


Effect of VC addition on preparation and mechanical properties of nanocrystalline WC-Co alloys
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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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    摘要:

    以鎢鈷氧化物、炭黑和VC為原料，采用原位還原碳化法制備WC-Co復(fù)合粉末，將復(fù)合粉末進行放電等離子燒結(jié)致密化制備WC-Co硬質(zhì)合金塊體材料。研究了不同VC添加量的復(fù)合粉末和塊體材料的相組成、顯微組織和性能，結(jié)果表明：VC的添加量對復(fù)合粉末的相組成、合金的晶粒尺寸和性能具有重要的影響，原料中添加2.0%VC時可獲得平均晶粒尺寸為101nm，相組成僅為WC和Co且具有高硬度和良好韌性的硬質(zhì)合金塊體材料。

    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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劉雪梅,王海濱,宋曉艷,王瑤,高楊,王西龍. VC添加量對納米晶硬質(zhì)合金的制備及性能影響[J].稀有金屬材料與工程,2016,45(2):477~481.[Liu Xuemei, Wang Haibin, Song Xiaoyan, Wang Yao, Gao Yang, 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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  • 收稿日期:2014-03-22
  • 最后修改日期:2014-07-17
  • 錄用日期:2014-08-12
  • 在線發(fā)布日期: 2016-07-19
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