无机材料学报

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煤矸石的纳米结构及其对合成SiC的影响

王晓刚1; 牟国栋1; 李晓池1; 陈维2; 陈寿田2   

  1. 1. 西安科技学院材料工程系, 西安 710054; 2. 西安交通大学电气绝缘国家重点实验室, 西安 710049
  • 收稿日期:2000-07-11 修回日期:2000-09-20 出版日期:2001-07-20 网络出版日期:2001-07-20

Gangue Nanostructure and Effect of the Structure on Synthesizing SiC

WANG Xiao-Gang1; MU Guo-Dong1; LI Xiao-Chi1; CHEN Wei2; CHEN Shou-Tian 2   

  1. 1.Xi an University of Science & Technology; Xi an 710054; China; 2.State Key Lab of Electrical Insulation for Power Equipment; Xi an Jiaotong University; Xi'an 710049, China
  • Received:2000-07-11 Revised:2000-09-20 Published:2001-07-20 Online:2001-07-20

摘要: 通过AFM研究,发现硅质煤矸石的两种主要组成SiO和C具有纳米粒状结构和纳米层状结构.SiO纳米颗粒的尺度为3~20nm,C质纳米颗粒的尺度为10~20nm.纳米层厚为5~80nm.矸石中的SiO和C呈密接触状态.用这种结构的煤矸石为原料,在1300℃时就可合成β-SiC,其合成温度明显低于人工混合物料同等条件下的合成温度,而且产率也可大幅度提高.

关键词: 硅质煤矸石, 纳米结构, 原子力显微镜, 合成β-SiC

Abstract: The nanoparticle structure and nanolayer structure of SiO2 and C in a silicious gangue were found by Atomic Force Microscope. The size of nanoparticle SiO2 is 3~20nm, the size of nanoparticle C is 10~20nm and the thick of nanolayer is 5~80nm in the gangue. SiO2 and C in the gangue are contacted tightly each other.β-SiC ultrafine powder was synthesized at 1300℃ with the gangue. The temperature is lower obviously than that synthesizing SiC with other raw materials mixed under the same conditions. And SiC yield can also be increased greatly.

Key words: silicious gangue, nanostructure, atomic force microscope, synthesizing β-SiC

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