| 晶须及颗粒增韧氧化铝基陶瓷复合材料的阻力行为 |
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| 引用本文： | 吕,金志浩,郑治祥,丁厚福. 晶须及颗粒增韧氧化铝基陶瓷复合材料的阻力行为[J]. 兵器材料科学与工程, 2001, 24(3): 14-17,21 |
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| 作者姓名： | 吕 金志浩 郑治祥 丁厚福 |
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| 作者单位： | 1. 西安交通大学
2. 合肥工业大学材料学院 |
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| 摘 要： | 采用压痕 -弯曲强度法获得了Al2 O3 -SiCw和Al2 O3 -TiCp两种复合材料的阻力曲线 ,结果表明 ,与基体材料相比 ,两种材料均呈现出明显的上升阻力曲线行为。其中Al2 O3 -SiCw复合材料显示出更为优越的抗裂纹扩展能力。通过SEM观察及理论分析可知 :材料的增韧机理及显微组织是产生这一现象的主要原因。
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| 关 键 词： | 压痕强度 阻力曲线 增韧机理 复合材料 |
| 文章编号： | 1004-244(2001)03-0014-04 |
R-CURVE BEHAVIOR OF Al2 O3 CERAMIC MATRIX COMPOSITES |
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| Lu Jun,Jin Zhihao,Zheng Zhixiang,Ding Houfu Materials Science and Engineering Institute,Hefei University of Technology,Hefei. R-CURVE BEHAVIOR OF Al2 O3 CERAMIC MATRIX COMPOSITES[J]. Ordnance Material Science and Engineering, 2001, 24(3): 14-17,21 |
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| Authors: | Lu Jun Jin Zhihao Zheng Zhixiang Ding Houfu Materials Science Engineering Institute Hefei University of Technology Hefei |
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| Affiliation: | Lu Jun,Jin Zhihao,Zheng Zhixiang,Ding Houfu Materials Science and Engineering Institute,Hefei University of Technology,Hefei 230009 |
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| Abstract: | The crack-growth-resistance (R-curve ) behavior of Al 2O 3-SiCw and Al 2O 3-TiCp ceramic matrix composites was estimated by the indentation-strength method . The results show that both materials exhibited rising R-curve behavior .and in which the Al 2O 3-SiCw composite displayed better damage tolerance and higher resistance to crack growth .From SEM observation and theoretical analysis ,it was inferred that this phenomenon can be attributed mainly to the microstructure and the toughening mechanism of the materials |
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| Keywords: | indentation-strength R-curve toughening- mechanism composite |
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