Fe基合金/石墨系柱状金刚石的高温高压合成与表征
用国产SPD 6×1200型六面顶压机,在10%Fe/90%Fe70Ni30粉末触媒和石墨（Fe–C）体系中,在压力为5.0～5.5 GPa、温度为1 550～1 600 K下合成出柱状金刚石晶体。研究了晶体的形态和生长习性。结果表明：合成的柱状金刚石晶体的颜色呈现绿色,晶体的长度为0.6～0.8 mm,长径比约为2.0～2.5。晶体有两种完整晶形,分别沿着[100]和[111]方向生长。晶体的红外吸收光谱分析表明,柱状金刚石晶体的含氮量（1500×10^6）高于正常形状晶体的。...
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| Published in | 硅酸盐学报 Vol. 39; no. 8; pp. 1357 - 1360 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
2011
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0454-5648 |
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| Summary: | 用国产SPD 6×1200型六面顶压机,在10%Fe/90%Fe70Ni30粉末触媒和石墨（Fe–C）体系中,在压力为5.0～5.5 GPa、温度为1 550～1 600 K下合成出柱状金刚石晶体。研究了晶体的形态和生长习性。结果表明：合成的柱状金刚石晶体的颜色呈现绿色,晶体的长度为0.6～0.8 mm,长径比约为2.0～2.5。晶体有两种完整晶形,分别沿着[100]和[111]方向生长。晶体的红外吸收光谱分析表明,柱状金刚石晶体的含氮量（1500×10^6）高于正常形状晶体的。 |
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| Bibliography: | column-shape diamond; high temperature high pressure; catalyst; graphite 11-2310/TQ LIU Wanqiang,MA Hongan,HU Meihua,JIA Xiaopeng（1.School of Materials Science and Engineering,Changchun University of Science and Technology,Changchun 130022;2.State Key Laboratory of Superhard Materials,Jilin University,Changchun 130012,China） The column-shape diamond crystals were synthesized with a powder alloy catalyst of 10%（in mass）Fe/90%Fe70Ni30 and a graphite powder by a cubic anvil apparatus（Model SPD–6 × 1200） at 5.0–5.5 GPa and 1 550–1 600 K.The morphology and growth behavior of diamond crystal were investigated.The results show that the synthetic diamond crystals have a column-shape with light green color.The length range of the crystals was 0.6–0.8 mm with the length to diameter ratios of 2.0–2.5.The column-shape crystals had two main kinds of complete crystal shapes,namely,one elongated along the direction and another along the direction.It was indicated that the nitrogen content（1 500 × 10^6） of the synthetic diamond |
| ISSN: | 0454-5648 |