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无机材料学报

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2007 , Vol. 22 >Issue 4: 695 - 700

DOI: https://doi.org/10.3724/SP.J.1077.2007.00695

研究论文

高体积分数的 SiCp/Al复合材料的 SPS致密化机理研究

  • 杨梅君 ,
  • 张东明 ,
  • 张联盟 ,
  • 顾晓峰
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  • 武汉理工大学材料复合新技术国家重点实验室, 武汉 430070

收稿日期: 2006-07-28

  修回日期: 2006-11-06

  网络出版日期: 2007-07-20

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Consolidating Mechanism of High Volume Fraction of SiCp/Al Composites by SPS

  • YANG Mei-Jun ,
  • ZHANG Dong-Ming ,
  • ZHANG Lian-Meng ,
  • GU Xiao-Feng
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  • State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China

Received date: 2006-07-28

  Revised date: 2006-11-06

  Online published: 2007-07-20

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摘要

运用放电等离子烧结(SPS)技术制备出体积分数达60%, 致密度达99%的SiCp/Al复合材料. 从烧结工艺的控制及电场的影响两方面对SPS烧结SiCp/Al复合材料的机理进行了研究, 认为SPS烧结SiCp/Al复合材料的致密化过程主要依靠烧结温度、压力及升温速率的合理搭配, 使Al熔融粘结SiC颗粒, 而又不溢出模具; 烧结过程中未发现明显的放电现象, 可能由于电场太弱不足以引发放电.

关键词： 放电等离子烧结; SiC p/Al复合材料; 烧结工艺; 电场

本文引用格式

杨梅君 , 张东明 , 张联盟 , 顾晓峰 . 高体积分数的 SiCp/Al复合材料的 SPS致密化机理研究[J]. 无机材料学报, 2007 , 22(4) : 695 -700 . DOI: 10.3724/SP.J.1077.2007.00695

Abstract

60vol%SiCp/Al composites with high relative density of 99% were fabricated by spark plasma sintering (SPS). The consolidating mechanism of SiCp/Al composites by SPS was analyzed on two aspects: (1) the adjustment of sintering parameters; (2) the effect of electric field. The results indicate that the consolidating procedure of SiCp/Al composites
by SPS is mainly dependent on the proper adjustment of temperature, pressure and heating-rate which make Al melt and adhere SiC particles without spraying out of the graphite dies; no obvious spark appears during the sintering, which may result from the weak electric field.

Key words： SPS; SiC p/Al composites; sintering parameter; electric field

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