The spray forming of nanostructured aluminum oxide

    Authors

    A. Agarwal; T. McKechnie;S. Seal

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    JOM-J. Miner. Met. Mater. Soc.

    Keywords

    COATINGS; Materials Science, Multidisciplinary; Metallurgy & Metallurgical; Engineering; Mineralogy; Mining & Mineral Processing

    Abstract

    Nanostructured ceramics and their composites possess improved properties such as tensile strength, fatigue strength, hardness, and wear resistance. Freestanding, near-net shape, nanostructured Al2O3 components can be synthesized via plasma-spray forming. In this study, plasma-spray parameters were optimized and an innovative substrate cooling technique was developed to retain nanosize Al2O3 in the spray deposit. Nanosize Al2O3 particles were partially melted and trapped between the fully melted coarser micrometer-size Al2O3 grains. Densification of the spray-deposited Al2O3 occurred via solidification and sintering. A similar processing approach can be adopted for fabrication of near-net shapes of a variety of nanostructured materials (metals, ceramics, and intermetallics) and their combinations by selecting suitable powder-treatment and plasma-spray parameters.

    Journal Title

    Jom-Journal of the Minerals Metals & Materials Society

    Volume

    54

    Issue/Number

    9

    Publication Date

    1-1-2002

    Document Type

    Article

    Language

    English

    First Page

    42

    Last Page

    44

    WOS Identifier

    WOS:000178024600010

    ISSN

    1047-4838

    Share

    COinS