东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2013, Vol. 34 ›› Issue (4): 516-519.DOI: -

• 材料与冶金 • 上一篇    下一篇

免烧成硼酸铝-碳化硅耐火材料的性能

茹红强，赵宝玉，李磊，龙海波   

  1. (东北大学材料与冶金学院，辽宁沈阳110819)
  • 收稿日期:2012-10-15 修回日期:2012-10-15 出版日期:2013-04-15 发布日期:2013-06-19
  • 通讯作者: 茹红强
  • 作者简介:茹红强(1962-)，男，山西阳城人，东北大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金重点资助项目(51032007，51272039)；中央高校基本科研业务费专项资金资助项目(N100702001).

Performances of BurningFree Aluminium BorateSiC Refractory

RU Hongqiang， ZHAO Baoyu， LI Lei， LONG Haibo   

  1. School of Materials ＆ Metallurgy， Northeastern University， Shenyang 110819， China.
  • Received:2012-10-15 Revised:2012-10-15 Online:2013-04-15 Published:2013-06-19
  • Contact: RU Hongqiang
  • About author:-
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摘要： 以碳化硅为主要原料，分别以酚醛树脂、氧化铝和氧化硼粉体作为常温和高温结合剂，研究了免烧成硼酸铝-碳化硅耐火材料的体积密度、抗折强度和抗热震性.结果表明:当酚醛树脂的质量分数为5%时，耐火材料的体积密度和抗折强度分别为266g·cm-3和13~21MPa；在960℃烧结之后，主要物相为SiC，Al2O3，Al4B2O9；当高温结合剂的质量分数为75%时材料的体积密度最大，为255g·cm-3；当高温结合剂的质量分数为125%时，材料的抗折强度最大，为19MPa；经过5次高温热震后，高温结合剂的质量分数为75%时材料抗热震性较好，强度损失率为25%.

关键词: 免烧成, 碳化硅, 耐火材料, 性能, 抗热震

Abstract: Using silicon carbides as the main raw materials， and the phenolic resin， Al2O3 and B2O3 powders as the room temperature and high temperature bonding agents， respectively， the influences of synthetic conditions on the bulk density， flexural strength and thermal shock resistance of the burningfree aluminum boratesilicon carbide refractory materials were studied. The results showed when the mass fraction of phenolic resin was 5%， the bulk density and flexural strengths of the refractory were 266g·cm-3 and 13~21MPa， respectively. After sintering at 960℃， the main phases were SiC， Al2O3， Al4B2O9. When the mass fraction of the hightemperature binders was 75%， the bulk density had the maximum value of 255g·cm-3. When the mass fraction of the hightemperature binding agent was 125%， the flexural strength had the maximum value of 19MPa. After 5 times high temperature thermal shocks， when the mass fraction of the hightemperature bonding agent was 75%， the thermal shock resistance of the refractory was better and the flexural strength loss rate was 25%.

Key words: burningfree, silicon carbide, refractory, performance, thermal shock resistance

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