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Aqueous Slip Casting of Transparent Aluminum Oxynitride
Author(s) -
Kumar Rajendran Senthil,
Johnson Roy
Publication year - 2016
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.14349
Subject(s) - materials science , slip (aerodynamics) , aqueous solution , sintering , aluminium , ceramic , casting , composite material , hydrolysis , metallurgy , chemical engineering , chemistry , physics , biochemistry , engineering , thermodynamics
Highly transparent Aluminum oxynitride (Al ON ) body has been produced using aqueous slip casting technique. High‐purity alumina and AlN were used as raw materials for the synthesis of single‐phase Al ON powder. As‐synthesized Al ON powder was surface modified to enable the Al ON powders resistant to hydrolysis in water during aqueous slip casting. High solid loaded aqueous Al ON slip was prepared for casting followed by drying and sintering to produce transparent Al ON . Phase formation and stability was characterized by XRD , pH , and viscosity measurements. Al ON powders before and after surface treatments were characterized. Sintered transparent Al ON samples were characterized for their mechanical, microstructural, and optical properties. Sintered and polished Al ON produced in this study has shown inline transparency up to 80% between 0.22 and 6 μm wavelength region.