High Temperature Micro Structural Evolution of ZrO2 Fibers Thermal Insulation Materials

Guang Hai Wang; H.R. Sun; Chun Peng Wang; Jian Zhou; Yan Li Huo; Shi Chao Zhang; Yu Feng Chen

doi:10.4028/www.scientific.net/KEM.602-603.319

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 602-603High Temperature Micro Structural Evolution of...

High Temperature Micro Structural Evolution of ZrO₂ Fibers Thermal Insulation Materials

Abstract:

Yttria-stabilized zirconia fibers thermal insulation materials may be the main developmental direction of high temperature thermal protection materials, due to their high temperature resistance (above 2000 °C), high strength and toughness, low thermal conductivity ( about 2 W/m·K), oxidation resistance and other excellent properties. However, mechanical property of zirconia fibers thermal insulation materials is decrease after high temperature heat treatment. In this paper, the evolution of microscopic structure of zirconia fibers is studied by using the method of oxyacethlene ablation. The gain growth and high temperature creep are observed after 600 s heat treatment at 1800 °C. Crystal phase of zirconia fibers is not changed and still cubic. Moreover, crystallinity is more higher form XRD patterns. Controlling grain growth can improve high temperature mechanical property of zirconia fibers thermal insulation materials.

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Periodical:

Key Engineering Materials (Volumes 602-603)

Pages:

319-322

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.602-603.319

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Online since:

March 2014

Authors:

Guang Hai Wang, H.R. Sun, Chun Peng Wang*, Jian Zhou, Yan Li Huo, Shi Chao Zhang, Yu Feng Chen

Keywords:

Heat Treatment, Thermal Protection Materials, ZrO₂ Fibers

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