东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2007, Vol. 28 ›› Issue (3): 378-380.DOI: -

• 论著 • 上一篇    下一篇

刚玉-尖晶石质浇注料烧成过程中的线膨胀行为

于景坤;杜景云;马北越;姜茂发;   

  1. 东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院 辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2007-03-15 发布日期:2013-06-24
  • 通讯作者: Yu, J.-K.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金;;

Behavior of linear expansion of corundum-spinel castables in sintering process

Yu, Jing-Kun (1); Du, Jing-Yun (1); Ma, Bei-Yue (1); Jiang, Mao-Fa (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2007-03-15 Published:2013-06-24
  • Contact: Yu, J.-K.
  • About author:-
  • Supported by:
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摘要： 以电熔刚玉,氧化镁,硅微粉以及铝酸盐水泥为原料,制备了φ10 mm×50 mm的试样.在750~1450℃的温度下测量了试样的线膨胀率,研究了电熔刚玉粒度、氧化镁、水泥及硅微粉加入量对刚玉-尖晶石质浇注料烧成过程中线膨胀率的影响.研究结果表明:电熔刚玉粒度、氧化镁、水泥及硅微粉加入量对刚玉-尖晶石质浇注料的线膨胀率影响显著,增加电熔刚玉粒度和硅微粉的加入量,试样的线膨胀率减小,有效地抑制了刚玉-尖晶石质浇注料在烧成过程中的线膨胀行为;增加氧化镁和水泥的加入量,试样的线膨胀率呈增加趋势.

关键词: 刚玉, 尖晶石, 浇注料, 线膨胀率, 结合剂

Abstract: The linear expansion rate was determined by the φ10 mm × 50 mm samples formed by fused corundum, magnesia, silica micropowder and aluminate cement at 750-1 450°C. The effects of the grain size of fused corundum and amounts of magnesia, cement and silica micropowder as additives on the behavior of linear expansion of the corundum-spinel castables in sintering process were studied. The results showed that they affect obviously the behavior, i.e., increasing the grain size of fused corundum and amount of silica micropowder will inhibit the linear expansion rate, while increasing the amounts of magnesia and cement the linear expansion rate tends to increase.

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