| 静载多点压痕对氮化硅陶瓷强度的影响 |
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| 引用本文： | 张凯,张明华,等.静载多点压痕对氮化硅陶瓷强度的影响[J].佛山陶瓷,1998,8(4):9-12. |
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| 作者姓名： | 张凯 张明华 |
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| 作者单位： | [1]西安建筑科技大学材料科学与工程系无机非金属材料研究所，西安710055 [2]西安建筑科技大学材料科学与工程系无机 |
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| 摘 要： | 本文在对XJM－1型磨片机进行改装的基础上研究了静载多点压痕对氮化硅陶瓷强度的影响。实验发现：与原始强度相比，静载多点压痕后的氮化硅强度有所降低；强度与多点压痕荷载之间的关系曲线出现一极大值。分析后表明：表面残余应力与裂纹尺寸是影响陶瓷材料强度的两个主要因素，它们的变化将对陶瓷材料强度产生直接影响。
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| 关 键 词： | 强度 残余应力 裂纹尺寸 氮化硅陶瓷 静载多点压痕 |
Effects of Multi-indentation on the Strength of Silicon Nitride Ceramic Under Static Loadings |
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| Zhang Kai, Zhang Minghua, ZhangJunzhan, Gong Jianghong, Liu Song.Effects of Multi-indentation on the Strength of Silicon Nitride Ceramic Under Static Loadings[J].Foshan Ceramics,1998,8(4):9-12. |
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| Authors: | Zhang Kai Zhang Minghua ZhangJunzhan Gong Jianghong Liu Song |
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| Abstract: | The effects of multi - indentation on the strength of silicon nitride ceramic under static loadings are studied by using the modified XJM -1 grinder. It is shown: compared with the origin strength of silicon nitride specirnen, the strength of silicon nitride ceramic after multi - indentation is decreased i there is a maximum existed in the curve of strength - multi - indentation loadings. Analysis of this result shows that surface residual stresses and the crack size are the two main factors effecting the strength of ceramic materials; the variation of which will have directs effects on the strength of ceramic materials. |
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| Keywords: | Indentation Strength Residual stress Crack size Silicon nitride ceramics |
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