Mechanical scratching induced phase transitions and reactions of boron carbide

Mingwei Chen, James W. McCauley

    Research output: Contribution to journalArticle

    22 Citations (Scopus)

    Abstract

    The structural and chemical stabilities of single-crystal boron carbide (B4 C) under severe mechanical scratching in air and water were investigated by transmission electron microscopy (TEM). Amorphous and nanocrystalline B4 C as well as nanostructured boron nitride (BN) were observed in the scratched fragments. Energy-filtered TEM analysis and thermodynamic calculations suggested that the BN nanophase results from the reaction of very small B4 C fragments with nitrogen in the ambience.

    Original languageEnglish
    Article number123517
    JournalJournal of Applied Physics
    Volume100
    Issue number12
    DOIs
    Publication statusPublished - 2006 Dec 1

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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