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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

β-赛隆(Sialon)/刚玉复相耐火材料研究

李亚伟1; 李楠1; 王斌耀1; 刘静2; 陈方玉2   

  1. 1. 武汉科技大学高温结构陶瓷研究所, 武汉 430081; 2. 武汉钢铁（集团）公司技术中心, 武汉 430080
  • 收稿日期:1999-07-09 修回日期:1999-09-29 出版日期:2000-08-20 网络出版日期:2000-08-20

β-Sialon/Corundum Composite Refractories by Nitridation Sintering Process

LI Ya-Wei1; LI Nan1; WANG Bin-Yao1; LIU Jing2; CHEN Fang-Yu 2   

  1. 1.Institute of Structural Ceramics; Wuhan University of Science & Technology; Wuhan 430081; China; 2.Technique Center; Wuhan Iron & Steel Company; Wuhan 430080; China
  • Received:1999-07-09 Revised:1999-09-29 Published:2000-08-20 Online:2000-08-20

PDF (PC)

1314

被引次数

46

摘要： 采用氮化反应烧结工艺制备β－Ｓｉａｌｏｎ／刚玉复相耐火材料．结果表明，在低于１４５０～１６００℃下的流动氮气气氛中直接氨化反应一定比例的ＡＩ、Ｓｉ、Ａｌ２Ｏ３微粉，以及刚玉细粉和颗粒，可以制备不同Ｚ值的β－赛隆（Ｓｉ６-ｚＡｌｚＯｚＮ８-ｚ）／刚玉复相材料．但是，最终产物中的β－赛隆相的Ｚ值与设计值存在偏差，这可能与反应过程有关。不同Ｚ值的β－赛隆／刚玉复相材料均显示良好的抗渣铁侵蚀性．同时抗碱试验表明；当预设计Ｚ值为１．５～２．５时具有良好的抗碱性能，而当预设计Ｚ值等于４时，抗碱性下降，这可能与复相材料中Ｓｉａｌｏｎ含量及其Ｚ值有关．

关键词: 赛隆, 刚玉, 耐火材料, 氮化烧结技术

Abstract: β-Sialon/corundum composite refractories were prepared by using Al, Si metal powders, Al2O3 fine powder, and corundum aggregates as raw materials at
the temperatures lower than 1600℃by nitridation sintering process. It shows that β-Sialon (Si6-zAlzOzN8-z, corundum, 15R
phase appear in all the resultant products different in the contents of β-Sialon, 15R and the Z value of β-Sialon, even though only β-Sialon and corundum
phases are expected in designed materials. And the Z value of the produced β-Sialon is deviated from the designed value. Such facts were supposed to
be related to the reaction progress. Additionally, these β-Sialon/corundum composite refractories were tested by alkali, molten slag and steel. The results
show that composite refractories of β-Sialon with Z=1.5～2.5 have good alkali resistance and all of the composite refractories have good molten slag and steel resistance.

Key words: Sialon, corundum, composite refractories, nitridation-sintering process

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