Download file (2.65MB)
Download as zip (2.36MB)

コレクション

引用

説明:

Self-propagating high-temperature synthesis (SHS) is a combustion-based method that involves a self-heating chain reaction, which is effective for rapidly producing materials with high melting points. Herein, ultrafast high-temperature sintering (UHS) was leveraged to ignite the SHS of titanium carbide (TiC) from titanium and graphite powders, and the heat generation and microstructural evolution during the process were investigated. The exothermic heat generated during TiC synthesis was confirmed, demonstrating that SHS was initiated in the initial stage of UHS. The incubation time before SHS ignition decreased with an increase in the UHS temperature above the melting point of titanium. Scanning electron microscopy revealed that fine TiC grains formed during SHS, which became denser under continued UHS. Additionally, molten Ti spread over the graphite particles during SHS, which transformed into plate-like TiC grains with elongated voids between them under subsequent heating by UHS. This structural feature was found to hinder further densification.

権利情報:

• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

キーワード: titanium carbide, graphite, ultrafast high-temperature sintering, self-propagating high-temperature synthesis

刊行年月日: 2025-06-06

出版者: Elsevier BV

掲載誌:

• Materials Letters (ISSN: 0167577X) vol. 398 138890

研究助成金:

• Core Research for Evolutional Science and Technology JPMJCR1996 (セラミックス粒界・界面における強電界ナノダイナミクス)

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1016/j.matlet.2025.138890

関連資料:

その他の識別子:

連絡先:

更新時刻: 2025-06-12 08:44:01 +0900

MDRでの公開時刻: 2025-06-12 12:21:16 +0900