Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method and densification process of ultrahigh-temperature multiphase ceramic powder
The invention relates to the technical field of ceramic materials, and in particular, relates to a preparation method and a densification process of ultrahigh-temperature composite ceramic powder. Thepreparation method of the ultrahigh-temperature multiphase ceramic powder comprises the steps: by taking ultrahigh-temperature ceramic raw material powder, silicon carbide and a ceramic precursor asraw material powder, adding a dispersing agent, and carrying out wet ball milling and spray drying to obtain the ultra-high temperature multiphase ceramic powder; the densification process of the ultrahigh-temperature multiphase ceramic powder comprises the steps: carrying out compression molding on the ultrahigh-temperature multiphase ceramic powder, and then carrying out low-temperature crackingand hot pressed sintering, so as to densifying the ultrahigh-temperature multiphase ceramic powder, and thus obtaining the ultrahigh-temperature multiphase ceramic. The ultrahigh-temperature ceramiccomposite powder obtained by the preparation method of the ultrahigh-temperature composite ceramic powder is easy to mold and densify at low temperature, the sintering temperature of the ultrahigh-temperature composite ceramic is reduced, and grain growth is inhibited; the ultrahigh-temperature multiphase ceramic prepared by the densification process has high density and excellent mechanical properties.
本发明涉及陶瓷材料技术领域，具体涉及一种超高温复相陶瓷粉体的制备方法及其致密化工艺。所述超高温复相陶瓷粉体的制备方法，以超高温陶瓷原料粉体、碳化硅和陶瓷前驱体为原料粉体，加入分散剂，通过湿法球磨、喷雾干燥得到超高温复相陶瓷粉体；所述超高温复相陶瓷粉体的致密化工艺，将超高温复相陶瓷粉体经过模压成型，然后进行低温裂解和热压烧结，使超高温复相陶瓷粉体致密化，得到超高温复相陶瓷。本发明超高温复相陶瓷粉体的制备方法得到的超高温陶瓷复合粉体易于成型和低温致密化，降低了超高温复相陶瓷的烧结温度，抑制了晶粒长大；其致密化工艺制备的超高温复相陶瓷具有高致密度和优异的力学性能。
Preparation method and densification process of ultrahigh-temperature multiphase ceramic powder
The invention relates to the technical field of ceramic materials, and in particular, relates to a preparation method and a densification process of ultrahigh-temperature composite ceramic powder. Thepreparation method of the ultrahigh-temperature multiphase ceramic powder comprises the steps: by taking ultrahigh-temperature ceramic raw material powder, silicon carbide and a ceramic precursor asraw material powder, adding a dispersing agent, and carrying out wet ball milling and spray drying to obtain the ultra-high temperature multiphase ceramic powder; the densification process of the ultrahigh-temperature multiphase ceramic powder comprises the steps: carrying out compression molding on the ultrahigh-temperature multiphase ceramic powder, and then carrying out low-temperature crackingand hot pressed sintering, so as to densifying the ultrahigh-temperature multiphase ceramic powder, and thus obtaining the ultrahigh-temperature multiphase ceramic. The ultrahigh-temperature ceramiccomposite powder obtained by the preparation method of the ultrahigh-temperature composite ceramic powder is easy to mold and densify at low temperature, the sintering temperature of the ultrahigh-temperature composite ceramic is reduced, and grain growth is inhibited; the ultrahigh-temperature multiphase ceramic prepared by the densification process has high density and excellent mechanical properties.
本发明涉及陶瓷材料技术领域，具体涉及一种超高温复相陶瓷粉体的制备方法及其致密化工艺。所述超高温复相陶瓷粉体的制备方法，以超高温陶瓷原料粉体、碳化硅和陶瓷前驱体为原料粉体，加入分散剂，通过湿法球磨、喷雾干燥得到超高温复相陶瓷粉体；所述超高温复相陶瓷粉体的致密化工艺，将超高温复相陶瓷粉体经过模压成型，然后进行低温裂解和热压烧结，使超高温复相陶瓷粉体致密化，得到超高温复相陶瓷。本发明超高温复相陶瓷粉体的制备方法得到的超高温陶瓷复合粉体易于成型和低温致密化，降低了超高温复相陶瓷的烧结温度，抑制了晶粒长大；其致密化工艺制备的超高温复相陶瓷具有高致密度和优异的力学性能。
Preparation method and densification process of ultrahigh-temperature multiphase ceramic powder
超高温复相陶瓷粉体的制备方法及其致密化工艺
WU SHIJIANG (Autor:in) / LIN YANG (Autor:in) / LI ZHENG (Autor:in) / YANG HUANSHUN (Autor:in) / ZHANG HEJUN (Autor:in)
02.10.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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