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2009 , Vol. 24 >Issue 4: 831 - 835

DOI: https://doi.org/10.3724/SP.J.1077.2009.00831

研究论文

ZrB2-SiC陶瓷的注浆成型与无压烧结

  • 王新刚 ,
  • 刘吉轩 ,
  • 阚艳梅 ,
  • 张国军 ,
  • 王佩玲
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  • 1. 中国科学院 上海硅酸盐研究所 高性能陶瓷和超微结构国家重点实验室， 上海 200050； 2. 中国科学院 研究生院， 北京 100049

收稿日期: 2008-10-17

  修回日期: 2008-12-19

  网络出版日期: 2009-07-20

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Slip Casting and Pressureless Sintering of ZrB2-SiC Ceramics

  • WANG Xin-Gang ,
  • LIU Ji-Xuan ,
  • KAN Yan-Mei ,
  • ZHANG Guo-Jun ,
  • WANG Pei-Ling
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  • 1. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; 2. Graduate University of the Chinese Academy of Sciences, Beijing 100049, China

Received date: 2008-10-17

  Revised date: 2008-12-19

  Online published: 2009-07-20

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摘要

研究了以聚乙烯亚胺 (PEI) 为分散剂，ZrB2粉体在水相中的分散性能. 结果显示ZrB2的等电点在pH为5.7，加入PEI后的等电点移到pH为11.5. 以PEI为分散剂，在pH为8.0处制备了固含量达45vol%的ZrB2-20vol%SiC陶瓷浆料. 采用注浆成型方法制备了相对密度为53%的ZrB2-SiC陶瓷坯体，并对其进行了无压烧结，同时研究了硼粉为烧结助剂对其致密化及性能的影响. 结果表明：硼粉为烧结助剂，实现了ZrB2-SiC陶瓷的完全致密化的同时，也降低了ZrB2-SiC陶瓷的烧结温度，2100℃烧结3h后的陶瓷维氏硬度为(17.5±0.5)GPa，弯曲强度为(406±41)MPa，断裂韧性为(4.6±0.4)MPa·m1/2.

关键词： ZrB2-SiC; 注浆成型; 无压烧结

本文引用格式

王新刚 , 刘吉轩 , 阚艳梅 , 张国军 , 王佩玲 . ZrB2-SiC陶瓷的注浆成型与无压烧结[J]. 无机材料学报, 2009 , 24(4) : 831 -835 . DOI: 10.3724/SP.J.1077.2009.00831

Abstract

The dispersion of ZrB2 particles in water was investigated using polyethyleneimine (PEI) as a dispersant. Results showed that the ZrB2 slurry had a isoelectric point of pH=5.7. The application of PEI changed the isoelectric point of the ZrB2 slurry to pH=11.5. High solids loading (45vol%) ZrB2-20vol% SiC slurries were prepared at pH=8.0 by adding 1.0wt% PEI. The green body prepared by slip casting had a relative density of 53%. The effects of boron as a sintering aid on the pressureless sintering process of the ZrB2-20vol% SiC ceramics were investigated. Nearly fully dense ZrB2- SiC composites were obtained by sintering at 2100℃ for 3 h. The sintered ceramics demonstrated a Vickers hardness of (17.5±0.5)GPa, a flexure strength of (406±41)MPa,and a fracture toughness of (4.6±0.4)MPa·m1/2.

Key words： ZrB2-SiC; slip casting; pressureless sintering

参考文献

［1］Fahrenholtz W G, Hilmas G E, Talmy I G, et al. Journal of the American Ceramic Society, 2007, 90(5): 1347-1364.
［2］闫永杰，张 辉，黄政仁，等(YAN Yong-Jie, et al). 无机材料学报(Journal of Inorganic Materials)，2008，23(4)：816-818.
［3］杨飞宇，张幸红，韩杰才，等(YANG Fei-Yu, et al).无机材料学报(Journal of Inorganic Materials)，2008，23(4)：734-738.
［4］Sciti D, Brach M, Bellosi A. Scripta Materialia, 2005, 53(11): 1297-1302.
［5］Zhu S M, Fahrenholtz W G, Hilmas G E. Journal of the American Ceramic Society, 2007, 27(4): 2077-2083.
［6］Rezaie A, Fahrenholtz W G, Hilmas G E. Journal of Materials Science, 2007, 42(8): 2735-2744.
［7］Zhang G J, Deng Z Y, Kondo N, et al. Journal of the American Ceramic Society, 2000, 83(9): 2330-2332.
［8］Wu W W, Zhang G J, Kan Y M, et al. Journal of the American Ceramic Society, 2006, 89(9): 2967-2969.
［9］Wu W W, Zhang G J, Kan Y M, et al. Journal of the American Ceramic Society, 2008, 91(8): 2501-2508.
［10］Zhao Y, Wang L J, Zhang G J, et al. Journal of the American Ceramic Society, 2007, 90(12): 4040-4042.
［11］Wu W W, Zhang G J, Kan Y M, et al. Scripta Materialia, 2007, 57(4): 317-320.
［12］Yan Y J, Huang Z R, Dong S M, et al. Journal of the American Ceramic Society, 2006, 89(11): 3589-3592.
［13］Zhang S C, Hilmas G E, Fahrenholtz W G. Journal of the American Ceramic Society, 2008, 91(1): 26-32.
［14］Zou J, Zhang G J, Kan Y M, et al. Scripta Materialia, 2008, 59(3): 309-312.
［15］Chamberlain A L, Fahrenholtz W G, Hilmas G E. Journal of the American Ceramic Society, 2006, 89(2): 450-456.
［16］Zhang S C, Hilmas G E, Fahrenholtz W G. Journal of the American Ceramic Society, 2006, 89(5): 1544-1550.
［17］Zhu S M, Fahrenholtz W G, Hilmas G E, et al. Journal of the American Ceramic Society, 2007, 90(11): 3660-3663.
［18］Li Y, Lin J, Gao J, et al. Materials Science and Engineering: A, 2008, 483484:676-678.
［19］Huang T S, Hilmas G E, Fahrenholtz W G, et al. International Journal of Applied Ceramic Technology,2007, 4(5): 470-479.
［20］Lee S H, Sakka Y, Kagawa Y. Journal of the American Ceramic Society, 2007, 90(11)： 3455-3459.
［21］Tang F Q, Huang X X, Zhang Y F, et al. Ceramics International, 2000, 26(1): 93-97.
［22］Zhang J X, Jiang D L, Tan S H, et al. Journal of Materials Research, 2002, 17(8): 2012-2018.
［23］Zhang J X, Jiang D L, Tan S H, et al. Journal of the American Ceramic Society, 2001, 84(11): 2537-2541.
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