Catalytic Properties of ZrB2-Based Ultra-High Temperature Ceramics Based on the Wall Temperature Response Method

Ning Li; Ping Hu; Xing Hong Zhang; Wen Bo Han

doi:10.4028/www.scientific.net/MSF.745-746.636

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HomeMaterials Science ForumMaterials Science Forum Vols. 745-746Catalytic Properties of ZrB2-Based Ultra-High...

Catalytic Properties of ZrB₂-Based Ultra-High Temperature Ceramics Based on the Wall Temperature Response Method

Abstract:

This paper presented the application of microwave-discharge plasma apparatus which was used to evaluate the catalytic properties of ZrB₂-based ultra-high temperature ceramics in the simulated real service environment by the wall temperature response method based on the heat balance principle. The results showed that the material composition had a significant influence on the catalytic properties of ZrB₂-based ultra-high temperature ceramics, and the catalytic activity of ZrB₂-SiC composites with Cr addition had been increased significantly. The relationship between catalytic properties of ZrB₂-based ultra-high temperature ceramics and surface composition was discussed in detail. The composition optimization was considered to be a very effective way to inhibit the recombination reactions of dissociated atoms on the surface of ultra-high temperature ceramics.

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Materials Science Forum (Volumes 745-746)

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636-641

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.745-746.636

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Online since:

February 2013

Authors:

Ning Li, Ping Hu, Xing Hong Zhang, Wen Bo Han

Keywords:

Borides, Catalytic Properties

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