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Spark plasma sintering of TiB2–boron ceramics using commercially available raw powders is reported. The B4C phase developed during reaction-driven consolidation at 1900 °C. The newly formed grains were located at the grain junctions and the triple point of TiB2 grains, forming a covalent and stiff skeleton of B4C. The flexural strength of the TiB2–10 wt.% boron ceramic composites reached 910 MPa at room temperature and 1105 MPa at 1600 °С. Which is the highest strength reported for non-oxide ceramics at 1600 °C. This was followed by a rapid decrease at 1800 °C to 480–620 MPa, which was confirmed by increased number of cavitated titanium diboride grains observed after flexural strength tests.

権利情報:

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

キーワード: spark plasma sintering, titanium diboride, amorphous boron, high-temperature strength.

刊行年月日: 2016-08-11

出版者: ELSEVIER SCI LTD

掲載誌:

• JOURNAL OF THE EUROPEAN CERAMIC SOCIETY (ISSN: 09552219) vol. 37 issue. 1 p. 393-397

研究助成金:

• JSPS Grant-in-Aid for Scientific Research B (No.15H04163)

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5503

公開URL: https://doi.org/10.1016/j.jeurceramsoc.2016.08.009

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更新時刻: 2025-05-26 10:52:40 +0900

MDRでの公開時刻: 2025-05-26 12:23:53 +0900