Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-temperature composite material and preparation method thereof
The invention discloses a high-temperature composite material and a preparation method thereof.The high-temperature composite material comprises a base material and a hafnium carbide/tantalum carbide-silicon carbide continuous phase composite coating arranged on the surface of the base material, the preparation method comprises the steps that 1, hafnium carbide powder is pressed on the surface of the base material to obtain a green body, and the green body is sintered to obtain a green body with the porosity being 35%-45%; and (2) performing chemical vapor co-deposition on the green body to form a hafnium carbide/tantalum carbide-silicon carbide continuous phase composite coating on the surface of the green body, thereby obtaining the high-temperature composite material. The prepared high-temperature composite material has excellent high-temperature comprehensive performance, high Young modulus, high thermal conductivity, low thermal expansion coefficient, good high-temperature mechanical performance, good thermal shock resistance and excellent erosion resistance, and is an ideal structural material applied to the fields of aerospace, semiconductors and the like.
本发明公开了一种高温复合材料及其制备方法，高温复合材料包括基材和设置在基材表面的碳化铪/碳化钽‑碳化硅连续相复合涂层，制备方法包括：（1）将碳化铪粉料压制在基材表面得到生坯，将生坯进行烧结得到孔隙率为35%~45%的坯体；（2）对坯体进行化学气相共沉积，在坯体表面形成碳化铪/碳化钽‑碳化硅连续相复合涂层，即得高温复合材料。本发明制得的高温复合材料具有优异的高温综合性能，具有高杨氏模量、高导热率、低热膨胀系数以及较好的高温力学性能，且抗热震性好、抗侵蚀性能优异，是应用于航空航天、半导体等领域的理想结构材料。
High-temperature composite material and preparation method thereof
The invention discloses a high-temperature composite material and a preparation method thereof.The high-temperature composite material comprises a base material and a hafnium carbide/tantalum carbide-silicon carbide continuous phase composite coating arranged on the surface of the base material, the preparation method comprises the steps that 1, hafnium carbide powder is pressed on the surface of the base material to obtain a green body, and the green body is sintered to obtain a green body with the porosity being 35%-45%; and (2) performing chemical vapor co-deposition on the green body to form a hafnium carbide/tantalum carbide-silicon carbide continuous phase composite coating on the surface of the green body, thereby obtaining the high-temperature composite material. The prepared high-temperature composite material has excellent high-temperature comprehensive performance, high Young modulus, high thermal conductivity, low thermal expansion coefficient, good high-temperature mechanical performance, good thermal shock resistance and excellent erosion resistance, and is an ideal structural material applied to the fields of aerospace, semiconductors and the like.
本发明公开了一种高温复合材料及其制备方法，高温复合材料包括基材和设置在基材表面的碳化铪/碳化钽‑碳化硅连续相复合涂层，制备方法包括：（1）将碳化铪粉料压制在基材表面得到生坯，将生坯进行烧结得到孔隙率为35%~45%的坯体；（2）对坯体进行化学气相共沉积，在坯体表面形成碳化铪/碳化钽‑碳化硅连续相复合涂层，即得高温复合材料。本发明制得的高温复合材料具有优异的高温综合性能，具有高杨氏模量、高导热率、低热膨胀系数以及较好的高温力学性能，且抗热震性好、抗侵蚀性能优异，是应用于航空航天、半导体等领域的理想结构材料。
High-temperature composite material and preparation method thereof
一种高温复合材料及其制备方法
DENG NANJUN (Autor:in)
05.12.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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