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无机材料学报

无机材料学报

• 研究论文 • 上一篇    

预热粉体爆炸烧结单相纳米氧化铝陶瓷的研究

钟盛文1; 焦永斌1; 叶雪均1; 匡敬忠1; 刘政1; 饶俊1; 张立德2   

  1. 1. 南方冶金学院资源工程系, 江西赣州 341000; 2. 中国科学院固体物理研, 合肥 230031
  • 收稿日期:2000-06-05 修回日期:2000-07-03 出版日期:2001-05-20 网络出版日期:2001-05-20

Progress on Single-Phase Nano-Ceramic of α-Al2O3 by Powder Preheating and Explosive Sintering

ZHONG Sheng-Wen1; JIAO Yong-Bin1; YE Xue-Jin1; KUANG Jin-Zhong1; LIU Zheng1; RAO Jun1; ZHANG Li-De 2   

  1. 1. Department of Resource Engineering; Southern Metallurgy Institute; Ganzhou 341000; China; 2. Institute of Solid Physics; Chinese Academy of sciences; Hefei 230031, China
  • Received:2000-06-05 Revised:2000-07-03 Published:2001-05-20 Online:2001-05-20

PDF (PC)

1322

被引次数

32

摘要： 采用预热粉体爆炸烧结技术制备单相纳米陶瓷，用４０ｎｍ的α－Ａｌ２Ｏ３粉体作原料进行烧结试验，用高倍扫描电镜、Ｘ射线衍射分析等手段对试验结果进行了测试．最近的研究表明：纳米粉体分别经 ６００～８００℃预热后进行爆炸烧结，可以得到密度为 ９６％～１００％理论密度、晶粒大小在１００ｎｍ以下的单相氧化铝纳米陶瓷，随着预热温度的递增，陶瓷晶粒生长有加快趋势．与常温下爆炸烧结相比，本研究的陶瓷晶粒无明显晶格变形．对陶瓷质量的影响因素及其改善途径也进行了分析．

关键词: 单相纳米陶瓷, 预热粉体, 爆炸烧结

Abstract: The technique of powder preheating and explosive sintering was used to prepare single phase
nano-ceramic, with the raw material of α-Al2O3 powder with grain size about 40nm. SEM, XRD were used to determine the
microstructure of sintered samples. Recent progress indicated that, the single phase nano-ceramics of aluminium oxide with
96%-100% theoretical density and grain size less than 100nm were obtained, the grain growth was accelerated along with the increase of powder preheating temperature, the lattice deformation of grains was not evident compared with that explosive sintering
technique adopted at room temperature. The nano-ceramic quality and its improing ways were analyzed and discussed.

Key words: single phase nano-ceramic, powder preheating, explosive sintering

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