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Synthesis of Cubic Boron Nitride under Relatively Lower Pressure and Lower Temperature via Chemical Reaction
Glass Physics and Chemistry ( IF 0.7 ) Pub Date : 2020-05-07 , DOI: 10.1134/s108765962002008x
Kai Ma

Abstract

In this paper, we present a new cubic boron nitride synthesis method via introduction of highly reactive nitrogen and boron atoms generated from chemical reactions as the raw materials of cubic boron nitride, so the system pressure and temperature are reduced significantly compared with the traditional phase transformation method at super high-pressure and high-temperature, and then the production cost of cubic boron nitride can be reduced greatly and the equipment service life can be extended significantly. Experiments have shown that by this method the cBN can be synthesized with high yield at pressures as low as 2.5 GPa and temperatures as low as 450°C. Compared with the conventional phase transformation method, the pressure decreases by about 50% and the temperature decreases by about 64%. Analyses have shown that the crystal structure of the cBN synthesized is perfect and the impurity content is extremely low.


中文翻译:

在较低的压力和较低的温度下通过化学反应合成立方氮化硼

摘要

本文介绍了一种通过引入高反应性氮和化学反应生成的硼原子作为立方氮化硼的原料的新型立方氮化硼合成方法,因此与传统的相变相比,系统压力和温度均大大降低该方法在超高压和高温下,可以大大降低立方氮化硼的生产成本,并可以大大延长设备的使用寿命。实验表明,通过这种方法,可以在低至2.5 GPa的压力和低至450°C的温度下高产率地合成cBN。与常规相变方法相比,压力降低约50%,温度降低约64%。
更新日期:2020-05-07
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