Mechanochemical synthesis of ReB2 powder

    Authors

    N. Orlovskaya; Z. L. Xie; M. Klimov; H. Heinrich; D. Restrepo; R. Blair;C. Suryanarayana

    Comments

    Authors: contact us about adding a copy of your work at [email protected]

    Abbreviated Journal Title

    J. Mater. Res.

    Keywords

    SUPERHARD RHENIUM DIBORIDE; AMBIENT-PRESSURE; TIB2 POWDERS; ZRB2; Materials Science, Multidisciplinary

    Abstract

    ReB2 was recently reported to exhibit high hardness and low compressibility, which both are strong functions of its stoichiometry, namely Re to B ratio. Most of the techniques used for ReB2 synthesis reported 1:2.5 Re to B ratio because of the loss of the B during high temperature synthesis. However, as a result of B excess, the amorphous boron, located along the grain boundaries of polycrystalline ReB2, would degrade the ReB2 properties. Therefore, techniques which could allow synthesizing the stoichiometric ReB2 preferably at room temperature are in high demand. Here, we report synthesis of ReB2 powders using mechanochemical route by milling elemental crystalline Re and amorphous B powders in the SPEX 8000 high-energy ball mill for 80 h. The formation of boron and perrhenic acids are also reported after ReB2 powder was exposed to the moist air environment for a 12-month period of time.

    Journal Title

    Journal of Materials Research

    Volume

    26

    Issue/Number

    21

    Publication Date

    1-1-2011

    Document Type

    Article

    Language

    English

    First Page

    2772

    Last Page

    2779

    WOS Identifier

    WOS:000299873300013

    ISSN

    0884-2914

    Share

    COinS
     

    Accessibility Statement

    This item was created or digitized prior to April 24, 2027, or is a reproduction of legacy media created before that date. It is preserved in its original, unmodified state specifically for research, reference, or historical recordkeeping. In accordance with the ADA Title II Final Rule, the University Libraries provides accessible versions of archival materials upon request. To request an accommodation for this item, please submit an accessibility request form.