摘要
通过ＡＦＭ研究，发现硅质煤矸石的两种主要组成ＳｉＯ２和Ｃ具有纳米粒状结构和纳米层状结构．ＳｉＯ２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ＳｉＯ２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．
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 similar to 20nm, the size of nanoparticle C is 10 similar to 20nm and the thick of nanolayer is 5 similar to 80nm in the gangue. SiO2 and C in the gangue are contacted tightly each other.beta -SiC ultrafine powder was synthesized at 1300 degreesC 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.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2001年第4期715-719,共5页
Journal of Inorganic Materials
基金
陕西省自然科学基金(96C18)
陕西省教委重点科研项目(99JK153)
