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无机材料学报

无机材料学报 >

2009 , Vol. 24 >Issue 6: 1155 - 1158

DOI: https://doi.org/10.3724/SP.J.1077.2009.01155

研究论文

挤出成型碳化硅陶瓷的力学性能和显微结构

  • 郭晓明 ,
  • 闫永杰 ,
  • 陈 健 ,
  • 黄政仁 ,
  • 刘学建
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  • (1. 中国科学院 上海硅酸盐研究所, 上海 200050; 2. 中国科学院 研究生院, 北京 100049)

收稿日期: 2009-02-23

  修回日期: 2009-04-03

  网络出版日期: 2010-04-22

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Mechanical Properties and Microstructure of Extruded SiC Ceramics

  • GUO Xiao-Ming ,
  • YAN Yong-Jie ,
  • CHEN Jian ,
  • HUANG Zheng-Ren ,
  • LIU Xue-Jian
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  • (1. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; 2. Graduate School of the Chinese Academy of Sciences, Beijing 100049, China)

Received date: 2009-02-23

  Revised date: 2009-04-03

  Online published: 2010-04-22

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摘要

以羟丙基甲基纤维素（HPMC）作为有机塑化剂, 采用挤出成型工艺常压烧结制备碳化硅陶瓷管材, 系统研究了羟丙基甲基纤维素含量对陶瓷管材性能的影响以及不同温度制度下碳化硅陶瓷显微结构变化. 研究结果表明, 陶瓷管材坯体的平均径向抗外压强度随着HPMC含量的增加呈增加趋势, 当HPMC含量为7.5wt％时达462MPa; 2200℃保温1h烧结陶瓷管材的致密度随着HPMC含量的改变没有明显的变化. 采用两步烧结法得到的碳化硅管材体积密度从3.00g/cm3增加到3.07g/cm3, 平均径向抗外压强度达540MPa, 致密度可达95.9%. 抛光面经化学腐蚀后的显微结构表明碳化硅颗粒出现异常长大, 有部分板状晶粒出现.

关键词： 挤出成型; 碳化硅; 显微结构

本文引用格式

郭晓明 , 闫永杰 , 陈 健 , 黄政仁 , 刘学建 . 挤出成型碳化硅陶瓷的力学性能和显微结构[J]. 无机材料学报, 2009 , 24(6) : 1155 -1158 . DOI: 10.3724/SP.J.1077.2009.01155

Abstract

Silicon carbide tube was extruded and pressureless-sintered using hydroxypropyl methylcellulose (HPMC) as the main organic plasticizer. The effect of HPMC contents on the properties of the sintered SiC tubes and the microstructure evolution in the different sintering system were systematically studied. The results show that the radial crushing strength of SiC green bodies increases with increasing HPMC content while the average radial crushing strength obtain maximum of 462MPa with 7.5wt% HPMC. The relative density of the SiC tube sintered at 2200℃ and hold for 1h changes little with different content of HPMC obviously. The density of the sintered SiC tube in two-step sintering method increases from 3.00g/cm3 to 3.07g/cm3, and the average radial crushing strength and relative density reach 540MPa and 95.9%, respectively. The microstructure of the chemical etched surface indicate the abnormal growth of the SiC particles and the appearance of the plate-like grains.

Key words： extrusion; silicon carbide; microstructure

参考文献

［1］江东亮, 李龙土, 欧阳杨翕, 等. 中国材料工程大典, 第8卷, 无机非金属材料工程（上）. 北京: 化学工业出版社, 2006：178-180.
［2］董绍明, 陈忠明, 谭寿洪, 等(DONG Shao-Ming, et al). 无机材料学报(Journal of Inorganic Materials), 1997, 12(6)：791-796.
［3］Munro R G . J.Phys.Chem.Ref.Data, 1997, 5(26): 1195-1203.
［4］Han In Sub, Seo Doo Won, Lee Shiwoo, et al. Key Engineering Materials, 2005, 287: 75-82.
［5］James L E, Robert C R, Jr Irving B R, et al. Process for Manufacture Ceramic Tubes. Unite States Patent, US5227105. 1993.07.13.
［6］江东亮, 潘振甦, 李雨林, 等(Jiang Dong-Liang, et al). 无机材料学报(Journal of Inorganic Materials), 1988, 3(2)：130-138.
［7］Maddrell E R. Journal of Materials Science Letters, 1987, 6(4): 486-488.
［8］王 静, 张玉军, 龚红宇. 陶瓷, 2008,(4): 17-20.
［9］Ananthakumar S, Manohar P, Warrier K G K, et al. Ceramic International., 2004, 30(6): 837-842.
［10］Greenwood R, Kendall K, Bellon O, et al. Journal of the European Ceramic Society, 2001, 21(4): 507-513.
［11］Grida Imen, Evans Julian R G. Journal of the European Ceramic Society, 2003, 23(5): 629-635.
［12］Chou S, Sydow K, Martin P J, et al. Journal of the European Ceramic Society, 2003, 23(5): 637-646.
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