Growth of Textured Mullite Fibers Using Polycrystalline Precursors

Mullite whiskers were prepared by HF leaching and templated into polycrystalline mullite fibers by extrusion. Textured growth of mullite fibers with elongated grains, aligned along the long-axis of the fibers, was achieved by heat treatment. Repeated heat treatment cycles of a whisker-templated fiber showed a bamboo-like microstructure. It was confirmed by SEM, TEM and optical microscopy (OM) that the growth direction along the fiber length was the [001] direction of orthorhombic mullite.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Materials Science and Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Yoon, Wonki

Contributors dc:contributor

• Kriven, Waltraud M.

• Engineering, Materials Science

Language dc:language

eng

Identifier

(MiAaPQ)AAI3270064

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/82807