Effects of Transition Metals on the Oxidation Behavior of ZrB2 Ceramics
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.
M. K. Dehdashti et al., "Effects of Transition Metals on the Oxidation Behavior of ZrB2 Ceramics," Corrosion Science, vol. 91, pp. 224-231, Elsevier Ltd, Feb 2015.
The definitive version is available at http://dx.doi.org/10.1016/j.corsci.2014.11.019
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)
Article - Journal
© 2015 Elsevier Ltd, All rights reserved.