Direct coating of cubic boron nitride with titanium powder under high pressure and high temperature
Direct coating of cubic boron nitride with titanium powder under high pressure and high temperature
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DOI：
10.1016/j.matlet.2014.02.107
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发表时间：
2014-05
影响因子：
3
通讯作者：
Shuang Wang;W. Guo;Hong-an Ma;X. Jia
中科院分区：
文献类型：
--
作者：
Shuang Wang;W. Guo;Hong-an Ma;X. Jia
本文提出了一种简便的一步法制备立方氮化硼（cBN）复合材料的方法。在该方法中，在晶体生长过程中，在5.0 GPa和1400-1650 °C下在cBN上生长纯氮化钛（TiN）涂层。我们研究了涂层的成分和显微结构。结果表明，TiN涂层的均匀性可以通过控制温度和Ti粉含量来控制。TiN涂层cBN的平均残余应力小于0.64 GPa。我们发现，晶体生长过程中起着重要的作用，在直接包覆cBN。这种直接包覆cBN的一步法是促进包覆cBN复合材料制备的有效途径。
In this paper, we propose a facile one-step method for preparing cubic boron nitride (cBN) composite materials. In this method, the pure titanium nitride (TiN) coatings are grown on cBN at 5.0 GPa and 1400–1650 °C during a crystal growth process. We investigate the composition and the microstructure of the coatings. The results indicate that the uniformity of TiN coatings formed on cBN surface can be controlled by the temperature and Ti powder content. The average residual stress of TiN-coated cBN is less than 0.64 GPa. We find that the crystal growth process plays an important role in direct coating of cBN. This one-step method of direct coating of cBN is an effective way to facilitate the preparation of coated cBN composite materials.