| 摘要 |
PROBLEM TO BE SOLVED: To provide a substance which is as hard as diamond and is chemically highly stable by subjecting a mixture of a graphite-like substance composed mainly of carbon and nitrogen, a simulated graphite-like substance or an amorphous carbon structural substance and metallic powder to a dynamic high temperature and a dynamic high pressure. SOLUTION: A graphite-like substance composed mainly of carbon and nitrogen, a simulated graphite-like substance or an amorphous carbon structural substance is used as a starting substance. Above all, a triazine polymerization substance, a condensation polycyclic heterocyclic compound composed of nitrogen and carbon and the like are preferably used. The starting substance and the metallic powder are mixed and this mixture is subjected to a dynamic high temperature and a dynamic high pressure by an impact wave. The metallic powder is, for example, copper, aluminum, cobalt, nickel, tungsten or an alloy thereof. The copper which is insert to the starting substance and a formed substance is one of the preferable metals as its heat conductivity is high. An average temperature and an average pressure to be imparted to the starting substance by the impact wave are to be set within the range of 1,000-3,000 deg.C and 10-50 GPa respectively.
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