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Follow on Google News | Ultra-high temperature materials metals and ceramicsUltra-high-temperature materials refer to the most heat-resistant high-grade materials that can be used as usual under severe environments such as stress and oxidation, and at an ultra-high temperature of about 2000°C.
1. Refractory metal Refractory metals (https://www.edgetechmat.com/) 2. Ceramic matrix composite materials Ultra-high temperature ceramic materials (https://www.eticeramics.com/) (1) Carbide ceramic matrix composite material The melting points of hafnium carbide (HfC), zirconium carbide (ZrC) and tantalum carbide (TaC) are much higher than their oxides. They do not need to undergo any solid phase transition, and have good thermal shock resistance. Has high strength. The fracture toughness and oxidation resistance of this type of carbide ceramics are very low. In order to overcome the brittleness of ceramics, fibers are usually used to enhance toughness. In 2000, NASA conducted arc heater ablation tests on 13 material systems of the X-43A (Mach 7) nose cone and leading edge produced by different companies that may be used in the Hyper-X program. (2) Boride ceramic matrix composites Research shows that the brittleness and room temperature strength of ZrB2 and HfB2 based ceramic composites can be overcome by reasonable selection of the composition, purity and particle size of the raw materials. (3) C/C composite material C/C composite material has light weight, high specific strength, high specific stiffness, high modulus, low thermal expansion coefficient, high strength at high temperature, good ablation performance and creep resistance in a large temperature range, and good resistance Advantages such as thermal shock performance. Compared with many metal alloys (https://www.edge- End
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