| Si—Ti—B掺杂金刚石／硬质合金复合体的性能 |
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| 引用本文： | 殷声,文涛.Si—Ti—B掺杂金刚石／硬质合金复合体的性能[J].北京科技大学学报,1991,13(5):442-446. |
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| 作者姓名： | 殷声 文涛 |
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| 作者单位： | 北京科技大学材料科学与工程系
(殷声，文涛)，北京科技大学材料科学与工程系(赖和怡) |
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| 摘 要： | 金刚石粒度和掺杂量两因素对Si-Ti-B掺杂金刚石/硬质合金复合体的金刚石层的抗弯强度和耐磨性的综合影响,可以归结为平均自由程与机械性能的关系。在强度(或耐磨性)与平均自由程的关系曲线中,存在最大值。对于低掺杂量材料,强度随平均自由程(粘结相层厚度)的减少而降低。对于高掺杂量材料,强度随粘结相层厚度的增大而下降。Si-Ti-B掺杂烧结金刚石的耐热性高于钴粘结金刚石。
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| 关 键 词： | 金刚石 掺杂 硬质合金 复合体 |
Properties of Si-Ti-B Doped Diamond/Cemented Carbide Composites |
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| Yin Sheng Wen Tao Lai Hoyi.Properties of Si-Ti-B Doped Diamond/Cemented Carbide Composites[J].Journal of University of Science and Technology Beijing,1991,13(5):442-446. |
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| Authors: | Yin Sheng Wen Tao Lai Hoyi |
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| Institution: | Yin Sheng Wen Tao Lai Hoyi Department of Material Science and Engineering |
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| Abstract: | The bending strength and abrasion resistance of diamond layer of Si-Ti-B doped diamond/cemented carbide composites depend on both the diamond particle size and the dopant content. The relationships between the mechanical properties and the diamond particle size, dopant content are considered as the relationships between properties and the mean free path. A maxi-mun was found in the bending strength (or abrasion resistance) vs. mean free path plot. The bending strength decreases with decreasing mean free path (binder layer thickness) to the direct contact of diamond particles. The bending strength decreases with increasing binder layer thickness is attributed to that the strength and hardness of binder (SiC, TiC) are lower than that of diamond. The heat-resistance of Si-Ti-B doped diamond is higher than that of cobalt bonded diamond. |
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| Keywords: | diamond Si-Ti-B dopant cemented carbide mean free path |
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