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HfC- and TaC-based composite materials containing 15vol% MoSi2 as sintering aid were selected for their excellent combination of ceramic and metallic properties to produce simple shaped prototypes for ablation tests in a mixture of oxygen/butane/propane at temperatures between 1300°C and 1900°C. The ablation resistance of the HfC- and TaC-based models was compared to that of graphite models. SEM analysis...
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