周陈新,罗军明,李乐乐,徐吉林,黄俊

• 1:南昌航空大学材料科学与工程学院

摘要(Abstract)：

利用Ti粉,B粉,还原铁粉与羰基铁粉为原料,使用微波烧结技术原位生成TiB_2钢结硬质合金。采用摩擦磨损实验仪对TiB_2钢结硬质合金耐磨性进行测试。结果表明:原位合成TiB_2钢结硬质合金由TiB_2,Fe_2B和α-Fe物相组成;随着TiB_2含量的增加,钢结硬质合金的相对密度与显微硬度均提高;TiB_2含量对钢结硬质合金摩擦系数无明显影响,但随着TiB_2含量的增加,磨损体积逐渐降低,耐磨性提高;随着载荷与转速的增加,TiB_2钢结硬质合金摩擦系数均逐渐降低,磨损体积均逐渐增加,磨损率升高;其磨损机制为磨粒磨损与粘着磨损。

关键词(KeyWords)： 钢结硬质合金;原位合成;TiB2;摩擦磨损

Abstract:

Keywords:

基金项目(Foundation): 江西省自热科学基金(20152ACB20013)

作者(Author): 周陈新,罗军明,李乐乐,徐吉林,黄俊

DOI: 10.13289/j.issn.1009-6264.2018-0143

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