Development of Carbon Nitride Study using Nanoamourphous Carbon Nitride

2016 Fiscal Year Final Research Report

• Project/Area Number: 26286046
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Crystal engineering
• Research Institution: Okayama University of Science
• Principal Investigator: Takarabe Kenichi 岡山理科大学, 理学部, 教授 (50122388)
• Co-Investigator(Kenkyū-buntansha): 森 嘉久 岡山理科大学, 理学部, 教授 (00258211) ; 松石 清人 筑波大学, 数理物質科学研究科(系), 教授 (10202318) ; 中山 敦子 新潟大学, 学内共同利用施設等, 准教授 (50399383) ; 福井 一俊 福井大学, 工学(系)研究科(研究院), 教授 (80156752) ; 高橋 博樹 日本大学, 文理学部, 教授 (80188044) ; 山崎 大輔 岡山大学, 地球物質科学研究センター, 准教授 (90346693)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: ナノアモルファス / 窒化炭素 / 超硬質物質

Outline of Final Research Achievements

The lowest temperature of synthesis of sp3 orthorhombic carbon nitride C2N2CH2 with the bulk modulus of 258 GPa of 58 % of diamond was estimated to be 2000 K at 40 GPa using sp2 nanoamorphous carbon nitride C3N4Hx synthesized with atmospheric nitrogen plasma as a precursor. Nanoamorphous carbon nitride is chemically reactive. The chemical reaction among nanoamorphous carbon nitride and rhenium metal with the bulk modulus of 352 GPa of 80 % of diamond at high pressure and high temperature resulted in the first synthesis of Re3C with the bulk modulus of 388 GPa of 86 % of diamond. The synthesis of Re3N was already known. The synthesis of Re3C was speculated that nitrogen of Re3N was replaced with C in releasing pressure. The increase of bulk modulus of 38 GPa is attributed to the introduction of an extra C-Re bond in Re3C.

Free Research Field

高圧科学