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硅酸盐通报 ›› 2010, Vol. 29 ›› Issue (1): 167-170.

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采用煤矸石为原料合成β-SiAlON晶须及其显微结构研究

彭犇;岳昌盛;陆璇;郭敏;张梅   

  1. 北京科技大学冶金与生态工程学院,北京,100083
  • 出版日期:2010-02-15 发布日期:2021-01-18
  • 基金资助:
    国家科技支撑计划(2006BAC21B02-1;2007BAB24B03)%国家自然科学基金重点项目(50332010)

Fabrication and Microstructure Analysis of β-SiAlON Whiskers from Coal Gangue by Carbonthermal Reduction-nitridation

PENG Ben;YUE Chang-sheng;LU Xuan;GUO Min;ZHANG Mei   

  • Online:2010-02-15 Published:2021-01-18

摘要: 以煤矸石和碳黑为主要原料,在1800 K下碳热还原氮化合成了纯度较高、含有大量晶须的β-SiAlON材料.FESEM照片表明β-SiAlON晶须多为细长柱状,直径120~220 nm,长度1.5~5 μm,晶须生长机制由VLS(vapor-liquid-solid)机制和VS(vapor-solid)机制组成.

关键词: β-SiAlON晶须;碳热还原氮化;显微结构;生长机制

Abstract: β-SiAlON with a lot of slender cylindrical whiskers, has been synthesized by carbonthermal reduction-nitridation method form Coal gangue and carbon black at 1800 K. FESEM photographs showed that diameter of β-SiAlON whisker is 120-220 nm and length in the majority is about 1.5-5 μm. The VLS (vapor-liquid-solid) and VS (vapor-solid) mechanisms have been adopted to explain the behavior of whiskers growth.

Key words: β-SiAlON whiskers;CRN;microscopic morphology;growth mechanism

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