Heat treatment and additive effects on microstructure and properties of tetragonal-(2-3 mol%) yttria-stabilized-zirconia

The role of selected additives (Al$\sb2$O$\sb3$, yttrium aluminum garnet (3Y$\sb2$O$\sb3$ $\cdot$ Al$\sb2$O$\sb3$) and Zr) in microstructural development, phase stability and mechanical behavior of predominantly-tetragonal (2-3 mol%) yttria-stabilized-zirconia (YSZ) was investigated. Preliminary studies on compositional effects were studied in 2-3 mol% YSZ prepared from a mixed oxide powder. Microstructure-property relationships were then investigated as a function of heat treatment conditions in 3 mol% YSZ prepared from a commercially available co-precipitated powder. Additive effects on microstructure and mechanical properties were studied for optimized heat treatment schedules in the 3 mol% YSZ system. For the YSZ-Al$\sb2$O$\sb3$ system, microstructures developed from mechanical mixing of YSZ powder were compared with microstructures obtained from nitrate-synthesized powders.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Engineering, Materials Science

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Baskaran, Suresh

Contributors dc:contributor

• Buchanan, Relva C.

• Engineering, Materials Science

Statement dc:rights

• Copyright 1989 Baskaran, Suresh

Language dc:language

eng

Identifier

AAI8924766
(UMI)AAI8924766

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/23739