发明名称 |
DIAMOND POLYCRYSTAL AND PROCESS FOR PRODUCTION THEREOF |
摘要 |
<p>Polycrystalline diamond includes cubic diamond and hexagonal diamond, and a ratio of X-ray diffraction peak intensity of a (100) plane of the hexagonal diamond to X-ray diffraction peak intensity for a (111) plane of cubic diamond is not lower than 0.01 %. In addition, a present method of manufacturing polycrystalline diamond includes the steps of preparing a non-diamond carbon material having a degree of graphitization not higher than 0.58 and directly converting the non-diamond carbon material to cubic diamond and hexagonal diamond and sintering the non-diamond carbon material, without adding any of a sintering agent and a binder, under pressure and temperature conditions at which diamond is thermodynamically stable.</p> |
申请公布号 |
EP2607307(A1) |
申请公布日期 |
2013.06.26 |
申请号 |
EP20110818115 |
申请日期 |
2011.08.10 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES, LTD. |
发明人 |
SUMIYA, HITOSHI;YAMAMOTO, KATSUKO;SATO, TAKESHI;ARIMOTO, KEIKO |
分类号 |
C01B31/06;B01J3/06;B23B27/14;B23B51/00;B24B53/12;B24D3/00 |
主分类号 |
C01B31/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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