最新色国产精品精品视频,中文字幕日韩一区二区不卡,亚洲有码转帖,夜夜躁日日躁狠狠久久av,中国凸偷窥xxxx自由视频

+高級(jí)檢索
以石墨烯為碳源的硬質(zhì)合金制備與性能研究
DOI:
作者:
作者單位:

北京工業(yè)大學(xué),北京工業(yè)大學(xué)

作者簡(jiǎn)介:

通訊作者:

中圖分類號(hào):

基金項(xiàng)目:

“863”計(jì)劃主題項(xiàng)目（SS2013AA031401）；國家自然科學(xué)基金（51174009）；北京市自然科學(xué)基金重點(diǎn)項(xiàng)目（2131001）


A STUDY ON PREPARATION AND MECHANICAL PROPERTIES OF HARD METALS USING GRAPHENE AS CARBON SOURCE
Author:
Affiliation:

Beijing University of Technology,Beijing university of technology

Fund Project:

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問統(tǒng)計(jì)
    • |
  • 參考文獻(xiàn)
    • |
  • 相似文獻(xiàn)
    • |
  • 引證文獻(xiàn)
    • |
  • 資源附件
    • |
  • 文章評(píng)論
    摘要:

    以N-甲基吡咯烷酮分散的石墨烯代替常規(guī)的冶金炭黑作為碳源，采用短流程原位還原碳化反應(yīng)制備出納米晶WC-Co復(fù)合粉末，石墨烯作為碳源可顯著降低原位還原碳化反應(yīng)溫度，復(fù)合粉末粒徑細(xì)小且分布均勻。采用放電等離子燒結(jié)系統(tǒng)對(duì)復(fù)合粉末進(jìn)行快速燒結(jié)致密化，得到平均晶粒尺寸為~290nm的超細(xì)晶硬質(zhì)合金塊體材料，具有硬度值HV30為1387.7±13.1kg/mm2，斷裂韌性KIC值為8.3±0.1MPa?m1/2的良好力學(xué)性能，通過HRTEM觀測(cè)得到試樣中WC/WC晶界、WC/Co相界、WC/C相界具有很高的匹配度。

    Abstract:

    In the present work，normal carbon source black carbon was substituted by graphene which was dispersed in N-Methyl-2-pyrrolidone and was used to prepare nanocrystalline WC-Co composite powders using short process in-situ reduction and carbonization reaction method. The results show that graphene as carbon source could reduce reaction temperature, and the particles diameter of WC-Co composite powders distribute slightly. Composite powders were consolidated through spark plasma sintering system and the mean grain size of WC in WC-Co cemented carbides is about 290nm. Vickers hardness and fracture toughness of the bulk was 1387.7?3.1kg/mm2 and 8.3?.1MPa?m1/2. The interfaces between WC/WC, WC/Co and WC/C were studied through HRTEM images and had grain boundaries with low misfit.

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

王西龍,宋曉艷.以石墨烯為碳源的硬質(zhì)合金制備與性能研究[J].稀有金屬材料與工程,2016,45(12):3262~3266.[wangxilong, Song Xiaoyan. A STUDY ON PREPARATION AND MECHANICAL PROPERTIES OF HARD METALS USING GRAPHENE AS CARBON SOURCE[J]. Rare Metal Materials and Engineering,2016,45(12):3262~3266.]
DOI：[doi]

復(fù)制
文章指標(biāo)
  • 點(diǎn)擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:2014-09-28
  • 最后修改日期:2015-02-03
  • 錄用日期:2015-03-25
  • 在線發(fā)布日期: 2017-02-06
  • 出版日期: