Open AccessJournal Article
Materials for ultrahigh temperature structural applications
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TLDR
In this paper, advanced ultrahigh temperature materials are critical to the development of next-generation rocket engines and hypersonic spacecrafts, and the authors propose a method to obtain them from ultra high temperature materials.Abstract:
Advanced ultrahigh temperature materials are critical to the development of next-generation rocket engines and hypersonic spacecrafts.read more
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Temperature-dependent mechanical properties of ZrC and HfC from first principles
Jin Zhang,Jeffrey M. McMahon +1 more
TL;DR: In this paper, the effect of elevated temperature on mechanical performance of ZrC and HfC was studied using two different methods (first-principles qusi-harmonic approximation and first-parameter qusicstatic approximation).
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Thermodynamic study on codeposition of ZrC-SiC from MTS-ZrCl4-CH4-H2
TL;DR: In this paper, the effects of temperature and partial pressure of precursors on the final condensed phases were studied and the results indicated that the codeposition is more effective in the presence of an independent carbon source, CH4, with a reasonable partial pressure than in the absence of CH4.
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Synthesis of ZrB2 Powders from ZrO2, BN, and C
TL;DR: In this article, a new ZrO2-C-BN precursor powder system was successfully prepared via a relatively low temperature (1550°C) for 1.5 h. Both thermodynamic and experimental results indicated that ZrC was formed below 1300°C, a temperature required for ZrB2 formation.
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Atomic oxygen adsorption and its effect on the oxidation behaviour of ZrB2–ZrC–SiC in air
TL;DR: In this article, the XPS spectra were employed to identify the adsorption mechanism of atomic oxygen on the surface of the ceramic composites, and the formation of O−B, O−Zr, and O−Si bonds indicates that atomic oxygen is chemically adsorbed on the surfaces of the porosity of ceramic.
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Bio‐Inspired Microstructure Design to Improve Thermal Ablation and Oxidation Resistance: Experiment on SiC
TL;DR: In this article, a method to improve the ablation and oxidation resistance by designing specified microstructures on the surface of silicon carbide (SiC) based ceramic was proposed, and three different types of micropatterns were designed and simulations were carried out to compare their effects.