M
Mark M. Opeka
Researcher at Naval Surface Warfare Center
Publications - 23
Citations - 3206
Mark M. Opeka is an academic researcher from Naval Surface Warfare Center. The author has contributed to research in topics: Oxide & Ceramic. The author has an hindex of 14, co-authored 23 publications receiving 2805 citations.
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Oxidation-based materials selection for 2000°C + hypersonic aerosurfaces: Theoretical considerations and historical experience
TL;DR: In this article, a compositional approach was proposed to improve the oxidation resistance of ZrB2-SiC and other non-oxide materials to at least 1600°C by compositional modifications which promote immiscibility in the glass component of the scale.
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Mechanical, Thermal, and Oxidation Properties of Refractory Hafnium and zirconium Compounds
TL;DR: In this paper, the thermal conductivity, thermal expansion, Youngs Modulus, flexural strength, and brittle-plastic deformation transition temperature of ZrB2, HfC 0·98 and HfN 0·92 ceramics were determined.
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UHTCs: Ultra-High Temperature Ceramic Materials for Extreme Environment Applications
TL;DR: In the world of extreme environment engineering, it is just a baseline as discussed by the authors, i.e. 3.3000°C. It is above the melting or decomposition temperatures for most of the materials known to man.
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A model for the oxidation of ZrB2, HfB2 and TiB2
TL;DR: In this article, a mechanistic model that interprets the oxidation behavior of the diborides of Zr, Hf and Ti in the temperature range of ∼1000-1800°C was formulated.
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Designing for ultrahigh-temperature applications: The mechanical and thermal properties of HfB2, HfcX, HfNX and αHf(N)
Eric Wuchina,Mark M. Opeka,S. Causey,K. Buesking,J. Spain,A. Cull,Jules L. Routbort,F. Guitierrez-Mora +7 more
TL;DR: In this paper, the authors used finite element models to predict material response in internally heated nozzle tests, and the results of the modeling suggest that HfB2 should survive the high thermal stresses generated during the nozzle test primarily because of its superior thermal conductivity.