Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Ultra-light medium-entropy carbide ultra-high-temperature thermal insulation material and preparation method thereof
The invention relates to the field of ultra-high-temperature super thermal insulation materials, in particular to an ultra-light medium-entropy carbide ultra-high-temperature thermal insulation material and a preparation method thereof. The chemical formula of the carbide is (Ti < x > Zr < y > Nb < 1-x-y >) C according to the molar ratio, xlt; 1, 0lt; yt; Yt; 1, and x + y < lt >; 1; the density of the porous (Ti < x > Zr < y > Nb < 1-x-y >) C is 0.25-0.95 g/cm < 3 >, the porosity is 85-96%, and the highest temperature resistance is higher than 2000 DEG C. Firstly, titanium carbide powder, zirconium carbide powder and niobium carbide powder serve as raw materials to prepare evenly-mixed slurry, then foaming, injection molding, freezing and vacuum drying are conducted, finally high-temperature sintering is conducted, and the ultra-high-porosity and ultra-light titanium-zirconium-niobium ternary medium-entropy carbide ultra-high-temperature thermal insulation material is prepared. The material has the characteristics of ultra-low density, high strength, low heat conductivity and ultra-high temperature resistance, and has a wide application prospect in the field of aerospace ultra-high temperature heat insulation. The method is low in cost, simple to operate and suitable for large-scale industrial production.
本发明涉及超高温超级隔热材料领域，具体是一种超轻质中熵碳化物超高温隔热材料及其制备方法。按摩尔比计，碳化物化学式为(TixZryNb1‑x‑y)C，其中：0<1；多孔(TixZryNb1‑x‑y)C的密度为0.25～0.95g/cm3，孔隙率为85～96％，最高耐温高于2000℃。首先以碳化钛、碳化锆和碳化铌粉末为原料配制混合均匀的浆料，然后进行发泡、注模、冷冻和真空干燥，最后进行高温烧结，便制备出超高孔隙率和超轻质的钛锆铌三元中熵碳化物超高温隔热材料。该材料具有超低密度、高强度、低热导率和耐超高温的特点，在航天超高温隔热领域具有广阔应用前景。本发明成本低、操作简单，适合大规模工业化生产。
Ultra-light medium-entropy carbide ultra-high-temperature thermal insulation material and preparation method thereof
The invention relates to the field of ultra-high-temperature super thermal insulation materials, in particular to an ultra-light medium-entropy carbide ultra-high-temperature thermal insulation material and a preparation method thereof. The chemical formula of the carbide is (Ti < x > Zr < y > Nb < 1-x-y >) C according to the molar ratio, xlt; 1, 0lt; yt; Yt; 1, and x + y < lt >; 1; the density of the porous (Ti < x > Zr < y > Nb < 1-x-y >) C is 0.25-0.95 g/cm < 3 >, the porosity is 85-96%, and the highest temperature resistance is higher than 2000 DEG C. Firstly, titanium carbide powder, zirconium carbide powder and niobium carbide powder serve as raw materials to prepare evenly-mixed slurry, then foaming, injection molding, freezing and vacuum drying are conducted, finally high-temperature sintering is conducted, and the ultra-high-porosity and ultra-light titanium-zirconium-niobium ternary medium-entropy carbide ultra-high-temperature thermal insulation material is prepared. The material has the characteristics of ultra-low density, high strength, low heat conductivity and ultra-high temperature resistance, and has a wide application prospect in the field of aerospace ultra-high temperature heat insulation. The method is low in cost, simple to operate and suitable for large-scale industrial production.
本发明涉及超高温超级隔热材料领域，具体是一种超轻质中熵碳化物超高温隔热材料及其制备方法。按摩尔比计，碳化物化学式为(TixZryNb1‑x‑y)C，其中：0<1；多孔(TixZryNb1‑x‑y)C的密度为0.25～0.95g/cm3，孔隙率为85～96％，最高耐温高于2000℃。首先以碳化钛、碳化锆和碳化铌粉末为原料配制混合均匀的浆料，然后进行发泡、注模、冷冻和真空干燥，最后进行高温烧结，便制备出超高孔隙率和超轻质的钛锆铌三元中熵碳化物超高温隔热材料。该材料具有超低密度、高强度、低热导率和耐超高温的特点，在航天超高温隔热领域具有广阔应用前景。本发明成本低、操作简单，适合大规模工业化生产。
Ultra-light medium-entropy carbide ultra-high-temperature thermal insulation material and preparation method thereof
一种超轻质中熵碳化物超高温隔热材料及其制备方法
WU ZHEN (Autor:in) / WANG JINGYANG (Autor:in) / LUO ZHIXIN (Autor:in) / LI JIALIN (Autor:in) / SUN LUCHAO (Autor:in)
22.11.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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