Processing, microstructure and mechanical properties of alumina platelet reinforced 3Y-TZP and mullite composites
Cherian, Isaac Kollenmareth
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https://hdl.handle.net/2142/22840
Description
Title
Processing, microstructure and mechanical properties of alumina platelet reinforced 3Y-TZP and mullite composites
Author(s)
Cherian, Isaac Kollenmareth
Issue Date
1995
Doctoral Committee Chair(s)
Kriven, Waltraud M.
Department of Study
Materials Science and Engineering
Discipline
Materials Science and Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Materials Science
Language
eng
Abstract
Ceramic matrix composites consisting of mullite and 3Y-TZP containing alumina platelet reinforcements were fabricated by suspension processing and pressureless sintered. The effect of the matrix on the microstructural development in the presence of alumina platelets were characterized. A systematic study of the effect of platelet sizes in the ranges 3-5, 5-10, 10-15 and 15-25 microns on the green and fired microstructures in 3Y-TZP composites were determined using porosimetry and electron microscopy. The mechanical properties of the composites such as fracture strength, fracture toughness and high temperature microhardness as a function of platelet size and volume fractions were determined.
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