人造金刚石与硬质合金复合材料的研制

李颖; 邹广田

doi:10.11858/gywlxb.1991.04.009

人造金刚石与硬质合金复合材料的研制

doi: 10.11858/gywlxb.1991.04.009

李颖^1,,
邹广田²

1.
郑州机械专科学校，河南郑州 450007；
2.
吉林大学原子分子物理所，吉林长春 130023

详细信息

通讯作者:
李颖

计量
- 文章访问数: 7689
- HTML全文浏览量: 477
- PDF下载量: 690
出版历程
- 收稿日期: 1990-06-16
- 修回日期: 1991-07-17
- 发布日期: 1991-12-05

Sintering of Diamond-Tungsten Carbide Composite under High Pressure and High Temperature

LI Ying^1
,,
ZOU Guang-Tian²

1.
Zhengzhou Institute of Mechanics, Zhengzhou 450007, China;
2.
Institute of Atomic and Molecular Physics, Jilin University, Changchun 130023, China

More Information

Corresponding author: LI Ying

摘要

摘要: 本实验选用TiH2及其它微量元素做粘结剂，在DS-029B型六面顶压机上烧结人造金刚石与硬质合金复合材料。实验中，采取TiH2脱氢与金刚石净化同时进行的工艺，在高真空和一定温度下脱氢，得到高活性的新鲜钛，使其具有更强的粘结作用，以获得高磨耗比的金刚石复合材料。实验中比较了不同净化温度对磨耗比的影响；同一种粘结剂不同含量与磨耗比之间的关系；同时还测试了其耐热性及时间极限。结果表明，这种复合材料在850 ℃下，加热3 min，磨耗比没有明显改变。
- 金刚石 /
- 复合材料 /
- 烧结 /
- 磨耗比
Abstract: With small amount of TiH2 and other elements as the cement, a high quality diamond-tungsten carbide composite has been sintered at high pressure and high temperature with DS-029A type cubic press. In the experiment, dehydrogenation of TiH2 and purification of diamond powder were carried out simultaneously at high vacuum and high temperature to get active Ti with stronger compendiousness to sinter diamond powder as well as diamond powder-tungsten carbide base. The relations between abrasive resistance and microstructure of the composite and between abrasive resistance and experimental conditions were investigated in detail. The thermostability of the composite was measured. Results show that the abrasive resistance of the composite changes little with temperature up to 850 ℃.
- diamond /
- composite /
- sintering /
- G ratio