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Ion‐Exchange Treatment of Silicon‐Yttria Dispersions
Author(s) -
Crosbie Gary M.
Publication year - 1985
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/j.1151-2916.1985.tb09640.x
Subject(s) - materials science , silicon nitride , silicon , thixotropy , chemical engineering , slurry , yield (engineering) , ion , ion exchange , rheology , yttria stabilized zirconia , composite material , mineralogy , inorganic chemistry , ceramic , metallurgy , chemistry , cubic zirconia , organic chemistry , engineering
Improved rheological stability in silicon‐yttria slurries for sinterable reaction‐bonded silicon nitride was obtained by treating casting slips with NH 4 + ‐ion‐exchange resin. The substitution of NH 4 + ions for flocculating ions (Ca 2+ or Y 3+ ) appears to be the principal factor leading to more time‐stable pseudoplastic yield stress and viscosities.