著者

赤石 實

出版者

日本高圧力学会

雑誌

高圧力の科学と技術 (ISSN:0917639X)

巻号頁・発行日

vol.13, no.1, pp.36-42, 2003 (Released:2003-07-15)

参考文献数

24

被引用文献数

3 4

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The synthesis of commercially available polycrystalline diamonds (hereafter PCD) with metallic and non-metallic sintering agents and their physical properties were briefly introduced. The PCD with non-metallic sintering agents such as alkaline earth carbonates had excellent heat-resistant properties, but because of the higher viscosity of molten carbonate, it is very difficult to infiltrate into the diamond layer with a grain size below 5 μm. In this article, recent advances in the synthesis of a fine-grained PCD under a static high pressure of 7.7 GPa were reviewed. Especially, experimental techniques such as sample assembly, pretreatment of natural diamond powder, etc, and sintering agents for the synthesis of PCD with a grain size from submicron to 100 nm were described.