Title

Effects of Transition Metals on the Oxidation Behavior of ZrB2 Ceramics

Abstract

The effects of transition metal additives on the oxidation behavior of ZrB2 ceramics at 1600⁰C were investigated. Additions of W, Mo, or Nb improved the oxidation resistance of ZrB2 even after evaporation of the protective B2O3 layer. The oxide layers were composed of an outer layer that was porous and had light color and an inner layer that was dense and appeared dark. Additions of Mo or Nb were more effective than W at improving the oxidation resistance of ZrB2 at 1600⁰C due to a lower evaporation rate for B2O3 glasses containing Nb and Mo compared to W.

Department(s)

Materials Science and Engineering

Keywords and Phrases

A. Ceramic; B. SEM; C. Oxidation; Ceramic materials; Evaporation; Oxidation resistance; Evaporation rate; Inner layer; Light color; Outer layer; Oxidation behaviors; Oxide layer; Transition metal additives

International Standard Serial Number (ISSN)

0010938X

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2015 Elsevier Ltd, All rights reserved.


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