Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Densified high-strength zirconium carbide ceramic material, densified high-strength hafnium carbide ceramic material, and low temperature preparation methods of densified high-strength zirconium carbide ceramic material and densified high-strength hafnium carbide ceramic material
The present invention relates to a densified high-strength zirconium carbide ceramic material, a densified high-strength hafnium carbide ceramic material, and low temperature preparation methods of the densified high-strength zirconium carbide ceramic material and the densified high-strength hafnium carbide ceramic material. The preparation method comprises: (1) adopting zirconium carbide powder/hafnium carbide powder, aluminum powder and silicon powder as raw materials, matching the material according to a reaction equation formula ZrC+yAl+zSi=(1-y)ZrCx/+zSiC+y/3Zr3Al3C5(or HfC+yAl+zSi=(1-y)HfCx+zSiC+y/3Hf3Al3C5), and uniformly mixing to obtain mixed powder, wherein y is more than 0 and is less than or equal to 0.43, z is more than or equal to 0 and is less than or equal to 0.51, and x is (1-z-1.67y)/(1-y); and (2) placing the obtained mixed powder in a vacuum or inert atmosphere to carry out hot pressing reaction sintering, wherein the hot pressing sintering temperature is 1500-1900 DEG C, and the pressure is 20-100 MPa.
Densified high-strength zirconium carbide ceramic material, densified high-strength hafnium carbide ceramic material, and low temperature preparation methods of densified high-strength zirconium carbide ceramic material and densified high-strength hafnium carbide ceramic material
The present invention relates to a densified high-strength zirconium carbide ceramic material, a densified high-strength hafnium carbide ceramic material, and low temperature preparation methods of the densified high-strength zirconium carbide ceramic material and the densified high-strength hafnium carbide ceramic material. The preparation method comprises: (1) adopting zirconium carbide powder/hafnium carbide powder, aluminum powder and silicon powder as raw materials, matching the material according to a reaction equation formula ZrC+yAl+zSi=(1-y)ZrCx/+zSiC+y/3Zr3Al3C5(or HfC+yAl+zSi=(1-y)HfCx+zSiC+y/3Hf3Al3C5), and uniformly mixing to obtain mixed powder, wherein y is more than 0 and is less than or equal to 0.43, z is more than or equal to 0 and is less than or equal to 0.51, and x is (1-z-1.67y)/(1-y); and (2) placing the obtained mixed powder in a vacuum or inert atmosphere to carry out hot pressing reaction sintering, wherein the hot pressing sintering temperature is 1500-1900 DEG C, and the pressure is 20-100 MPa.
Densified high-strength zirconium carbide ceramic material, densified high-strength hafnium carbide ceramic material, and low temperature preparation methods of densified high-strength zirconium carbide ceramic material and densified high-strength hafnium carbide ceramic material
WANG XIN GANG (Autor:in) / ZHANG GUOJUN (Autor:in) / LIU HAITAO (Autor:in)
19.08.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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