| SiC晶须增强Al2O3—TiC复相陶瓷的研究 |
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| 引用本文： | 黄政仁 谭寿洪. SiC晶须增强Al2O3—TiC复相陶瓷的研究[J]. 硅酸盐学报, 1993, 21(4): 349-355 |
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| 作者姓名： | 黄政仁 谭寿洪 |
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| 作者单位： | 中国科学院上海硅酸盐研究所(黄政仁，谭寿洪)，中国科学院上海硅酸盐研究所(江东亮) |
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| 摘 要： | 运用品须补强和粒子弥散双重手段,对氧化铝材料的性能进行改进。比较了Al_2O_3-TiC(AT),Al_2O_3/SiC_w(As),Al_2O_3-TiC/SiC_w(ATS)材料的力学性能,证实ATS材料有明显的迭加增强增韧效果,并具有良好的高温力学性能。抗氧化实验证实,将SiC晶须加入AT中以后,材料的抗氧化性能有明显改进。从热膨胀失配角度分析和SEM显微结构观察证实,ATS材料的主要增韧机理是界面解离和裂纹偏转。
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| 关 键 词： | 氧化铝 碳化钛 碳化硅 晶须 陶瓷 |
STUDY OF SiC WHISKER REINFORCED Al_2O_3-TiC MULTIPHASE CERAMICS |
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| Huang Zhengren Tan Shouhong Jiang Dongliang. STUDY OF SiC WHISKER REINFORCED Al_2O_3-TiC MULTIPHASE CERAMICS[J]. Journal of The Chinese Ceramic Society, 1993, 21(4): 349-355 |
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| Authors: | Huang Zhengren Tan Shouhong Jiang Dongliang |
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| Abstract: | Strengthening of silicon carbide whiskers and particle dispersion were both used to improve the performances of alumina ceramic. Compared with the experimental results of Al_2O_3-TiC (AT), Al_2O_3/SiC_w (AS) and Al_2O_3-TiC/SiC_w (ATS), it confirms that ATS composites have obvious additive effect of both reinforcing and toughening and good high temperature strength. The oxidation experiment indicates that the oxidation resistance is improved greatly when SiC whisker are introduced. The main toughening mechanism of ATS composite is interface debonding and crack deflection, based on the analysis of thermo-expansion mismatch and the SEM observation of microstrueture. |
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| Keywords: | alumina titanium carbide multiphase ceramics silicon carbide whisker whisker reinforcing particle dispersion interface debonding crack deflection |
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