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Fabrication of Functionally Graded SiAlON Ceramics by Tape Casting
Author(s) -
Acikbas Nurcan Calis,
Suvaci Ender,
Mandal Hasan
Publication year - 2006
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.1551-2916.2006.01059.x
Subject(s) - sialon , tape casting , materials science , microstructure , ceramic , fabrication , casting , composite material , slurry , phase (matter) , metallurgy , chemistry , medicine , alternative medicine , organic chemistry , pathology
Functionally graded SiAlON ceramics (FG‐SiAlONs) were successfully prepared by the tape casting and lamination approach. Non‐aqueous SiAlON slurries with five different α to β‐SiAlON ratios (85α:15β, 70α:30β, 55α:45β, 40α:60β, and 25α:75β) were prepared by a 66 methyl ethyl ketone/34 ethanol (vol%) mixture. Phase and microstructure analyses incorporation with hardness measurements clearly show that the FG‐SiAlONs, prepared by tape casting, exhibit a continuous and gradual change in composition and hardness. Thus, the tape casting approach is a viable method to produce FG‐SiAlONs with a precisely controlled composition, and subsequently properties, as a function of position.
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