Synthesis of Mo-Si-B in situ composites by mechanical alloying

JOURNAL OF ALLOYS AND COMPOUNDS

卷:434

Article; Proceedings Paper

Yamauchi, Akira ; Yoshimi, Kyosuke ; Kurokawa, Kazuya ; Hanada, Shuji

关键词: molybdenum silicides;    mechanical alloying;    spark plasma sintering;    X-ray diffraction;   

DOI  :  10.1016/j.jallcom.2006.08.218

来源: Elsevier

【 摘 要 】

In this study, the synthesis of Mo-Si-B multi-phase alloys, so-called in situ composites, was attempted with the combination of mechanical alloying (MA) and spark plasma sintering (SPS) processes. MA was conducted with mixed powders of Mo, Si and B using a planetary ball mill under various milling conditions. MAed powders were characterized by X-ray diffractometry (XRD) and scanning electron microscopy (SEM). The results obtained by XRD indicated that Mo-Si-B alloyed powders were successfully produced when elemental powders were milled at a higher milling energy. Vacuum heat treatments after the MA process promoted the formation of Mo-Si-B intermetallic phase in MAed powders. MAed powders were successfully consolidated by SPS and sound compacts Of Mo5SiB2-based composites were synthesized. (C) 2006 Elsevier B.V. All rights reserved.

【 授权许可】

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