高级检索
无机材料学报

无机材料学报 >

2009 , Vol. 24 >Issue 6: 1163 - 1167

DOI: https://doi.org/10.3724/SP.J.1077.2009.01163

研究论文

高纯β-SiAlON粉料的可控合成

  • 岳昌盛 ,
  • 郭 敏 ,
  • 张 梅 ,
  • 王习东 ,
  • 张志安 ,
  • 彭 犇
展开
  • （1. 北京科技大学 冶金与生态工程学院, 北京100083; 2. 北京大学 工学院, 北京 100871; 3. 山西新型炉业集团有限公司, 太原 030003）

收稿日期: 2009-03-11

  修回日期: 2009-04-13

  网络出版日期: 2010-04-22

收起

Controllable Synthesis of High-purity β-SiAlON Powder

  • YUE Chang-Sheng ,
  • GUO Ming ,
  • ZHANG Mei ,
  • WANG Xi-Dong ,
  • ZHANG Zhi-An ,
  • PENG Ben
Expand
  • （1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2. College of Engineering, Peking University, Beijing 100871, China; 3 Shanxi Xinxing Kiln & Furnace Group Limited Company, Taiyuan 030003, China）

Received date: 2009-03-11

  Revised date: 2009-04-13

  Online published: 2010-04-22

Fold

摘要

在Si3N4-SiO2-Al2O3-AlN体系中, 采用拟抛物面规则对不同组成SiAlON相的热力学性能进行了评估, 并研究了β-SiAlON相的合成热力学条件. 以煤矸石为主要原料, 加入适量碳黑作为还原剂，在不同气氛（空气或不同纯度的氮气）下合成了β-SiAlON, 并研究了β-SiAlON粉料在不同气氛下的相转化. 热力学分析表明，不同的SiAlON相可以在合适的气氛参数Y=lg(PO2/Pθ)-2/3lg(PN2/Pθ)下合成, 较低的Y值有利于β-SiAlON相的合成. 过量碳存在时提高通氮纯度α将会降低气氛中的Y值, 其关系式为Y=2lg［(2-2α)/(2-α)］-2/3lg［α/(2-α)］-15.616. 实验结果表明：热力学分析得到的合适初始参数可以实现高纯βSiAlON的可控合成, 当初始参数为T=1800K, 埋焦炭保护, 通入氮气纯度α＝0.995～0.999时可获得较好的结果.

关键词： β-SiAlON; 热力学; 可控合成

本文引用格式

岳昌盛 , 郭 敏 , 张 梅 , 王习东 , 张志安 , 彭 犇 . 高纯β-SiAlON粉料的可控合成[J]. 无机材料学报, 2009 , 24(6) : 1163 -1167 . DOI: 10.3724/SP.J.1077.2009.01163

Abstract

The Gibbs free values of different SiAlON were assessed by the thermodynamic quasi-paraboloid rule in Si3N4-AlN-SiO2-Al2O3 system and the thermodynamic parameter for β-SiAlON were explored at 1800K. The synthesis of β-SiAlON based on coal gangue and carbon black by carbonthermal reduction nitridation method, and phase transformation of β-SiAlON powder in various atmospheres (such as air or nitrogen of different purity) were discussed in detail. Thermodynamic analysis reveals that different SiAlON can be synthesized in suitable atmosphere parameter Y(Y=lg(PO2/Pθ)-2/3lg(PN2/Pθ) at 1800K, and low Y value is beneficial to synthesis of βSiAlON. When excessive carbon exists in the atmosphere, with the increase of purity (α) of initial nitrogen, the Y value decreases, and the relationship between purity(α) and Y value is Y=2lg［(2-2α)/(2-α)］-2/3lg［α/(2-α)］-15.616. The experiment results shows that the suitable initial parameters based on thermodynamic analysis is highly advantageous in controllable synthesis of high-purity β-SiAlON, the proper initial parameters is that samples, burying in coke, are sintered at 1800K in a flowing nitrogen atmosphere, the purity range of nitrogen is about 0.995-0.999.

Key words： β-SiAlON; thermodynamic; controllable synthesis

参考文献

［1］Jack K H. J. Mater. Sci., 1976, 11(16): 1135-1158.
［2］Hampshire S, Park K H, Thompson D P, et al. Nature, 1978, 274(5674): 880-882.
［3］Chen I W, Rosenflanz A. Nature, 1997, 389(6652): 701-704.
［4］Gunn D A. J. Eur. Ceram. Soc., 1993, 11(1): 35-41.
［5］Nagae M, Koyama Y, Yasutake S, et al. J. Am. Ceram. Soc., 2006, 89(11): 3550-3553.
［6］Fox K M, Hellmann J R, Dickey E C, et al. J. Am. Ceram. Soc., 2006, 89(8): 2555-2563.
［7］Mazzoni A D, Aglietti E F. Appl. Clay. Sci., 1998, 12(6): 447- 461.
［8］张海军, 刘占杰, 钟香崇(ZHANG HaiJun, et al). 无机材料学报(Journal of Inorganic Materials), 2004, 19(5): 1129- 1137.
［9］Qiu Q, Hlavacek V, Prochazka S. Ind. Eng. Chem. Res., 2005, 44(8): 2469-2476.
［10］Li F J, Wakihara T, Tatami J, et al. J. Am. Ceram. Soc., 2007, 90(5): 1541-1544.
［11］Hillert M, Jonsson S. Z. Metallkd., 1992, 83(10): 720-728.
［12］Dumitrescu L, Sundman B. J. Eur. Ceram. Soc., 1995, 15(1): 89-94.
［13］Mao H, Selleby M. Calphad, 2007, 31(2): 269-280.
［14］李文超, 王 俭, 李兴康, 等. 硅酸盐学报, 1996, 24(1): 80-84.
［15］Zhen Q, Wang F, Li W. Rare Metals, 1999, 18(1): 1-5.
［16］梁英教, 车荫昌主编. 无机热力学数据手册. 沈阳: 东北大学出版社, 1993: 449-479.
［17］马 刚, 岳昌盛, 郭 敏, 等. 耐火材料, 2008, 42(4): 274-278.
［18］Ekstrom T, Kall P O, Nygren M, et al. J. Mater. Sci., 1989, 24(5): 1853-1861.
［19］MacKenzie K J D, Sheppard C M, Barris G C, et al. Thermo. Acta, 1998(318): 91-100.
Options
文章导航

/

〈 〉