Synthesizing MgO-SiC-C Refractory Composite Powder from Forsterite and Carbon Black

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Synthesizing MgO-SiC-C Refractory Composite Powder from Forsterite and Carbon Black

更新时间：2025-07-09

- Synthesizing MgO-SiC-C Refractory Composite Powder from Forsterite and Carbon Black
- Vol. 44, Issue 12, Pages: 105-109(2010)
- 作者机构：
  
  武汉科技大学耐火材料与高温陶瓷国家重点实验室培育基地,武汉,430081
- 作者简介：
- 基金信息：
- DOI：
  CLC： TF065.1
- Online First：10 December 2010，
  
  Published：2010
- 稿件说明：
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Synthesizing MgO-SiC-C Refractory Composite Powder from Forsterite and Carbon Black[J]. 2010, 44(12): 105-109.
DOI：

Synthesizing MgO-SiC-C Refractory Composite Powder from Forsterite and Carbon Black[J]. 2010, 44(12): 105-109. DOI：

摘要

以湖北宜昌镁橄榄石细粉与炭黑为原料

分别以4种质量比混合均匀

以热固性酚醛树脂作为结合剂

在200 MPa压力下压制成20 mm×20 mm试样

置于110 ℃干燥箱中干燥24 h

然后在高温管式气氛炉中通入氩气作为保护气氛

分别在1 550 ℃、1 600 ℃、1 650 ℃和1 700 ℃保温3 h烧成.对烧成的试样分别进行X射线衍射和扫描电镜检测

结果表明:原料中Fe

杂质经高温烧成后转变为FeSi; 不同试样经不同温度烧成后都含有少量的MgAl

和SiO

; 烧成温度与炭黑含量是影响MgO-SiC-C复合粉体合成的重要控制因素

当烧成温度为1 600 ℃

镁橄榄石细粉与炭黑原料的质量分数分别为79.5%、20.5%和74.5%、25.5%时

能够比较好地合成MgO-SiC-C系复合粉体.

Abstract

The MgO-SiC-C composite powders are prepared using forsterite(Yichang

Hubei province)and carbon black powders as raw materials. Forsterite and carbon black are uniformly mixed in 4 mass ratios with phenolic resin as the binder

and then cold pressed into the specimens with the size of 20 mm×20 mm. The samples are dried at 110 ℃ for 24 hours

and sintered at 1 550 ℃

1 600 ℃

1 650 ℃ and 1 700 ℃

respectively

by holding 3 hours in argon atmosphere. Test results for the sintered samples using XRD and SEM show that after high temperature sintering

is transformed into FeSi

a few MgAl

and SiO

phases exist in samples

and that the sintering temperature and the carbon black content are the key factors to

affect synthesizing of MgO-SiC-C composite powders. The MgO-SiC-C composite powders are synthesized well when the mass fractions of forsterite and carbon black are 79.5% and 20.5% or 74.5% and 25.5% at 1 600 ℃ or 1 650 ℃.

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references

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