六方氮化硼的结晶度对合成立方氮化硼的影响

吉晓瑞; 杨大鹏; 杨晓红; 张铁臣

doi:10.11858/gywlxb.2011.02.004

六方氮化硼的结晶度对合成立方氮化硼的影响

doi: 10.11858/gywlxb.2011.02.004

1.
沈阳工程学院基础教学部，辽宁沈阳 110136；
2.
吉林大学仪器科学与电气工程学院，吉林长春 130026；
3.
吉林大学超硬材料国家重点实验室，吉林长春 130012

详细信息

通讯作者:
吉晓瑞

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出版历程
- 收稿日期: 2010-01-01
- 修回日期: 2010-06-01
- 发布日期: 2011-04-15

Influence of Crystallization Degree of h-BN on Synthesis of c-BN

1.
Department of Preparatory Course, Shenyang Institute of Engineering, Shenyang 110136, China;
2.
College of Instrumentation & Electrical Engineering, Jilin University, Changchun 130026, China;
3.
National Laboratory of Superhard Materials, Jilin University, Changchun 130012, China

More Information

Corresponding author: JI Xiao-Rui

摘要

摘要: 将3种不同初始结晶度的六方氮化硼（h-BN）分别与Li3N按一定比例混合，在低于立方氮化硼（c-BN）的合成温度和压力条件下，采用高温、高压预处理方式，使3种h-BN的结晶度发生改变。对不同预处理条件下得到的h-BN进行X射线衍射分析，确定了结晶度的变化程度。用不同结晶度的h-BN作为初始原料合成c-BN，观察并分析了h-BN向c-BN转化时微观结构的变化以及h-BN的结晶度对合成c-BN的影响。实验结果表明，结晶度低的h-BN更容易合成c-BN。
- h-BN /
- 结晶度 /
- c-BN /
- 合成
Abstract: High pressure and temperature pretreatments were employed for the mixture of Li3N and hexagonal boron nitride (h-BN) powders with different crystallization degrees. Using the pretreated h-BN and Li3N, the cubic boron nitride (c-BN) was synthesized by a cubic-anvil press. According to the X-ray diffraction (XRD) data, both the crystallization degree change of the pretreated h-BN and the microstructure transition from h-BN to c-BN were analyzed. The experimental results indicated that h-BN possessing lower crystallization degree was easier to transform into c-BN.
- h-BN /
- crystallization degree /
- c-BN /
- synthesis

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参考文献(17)

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