Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Ultrahigh-temperature ceramic material as well as preparation method and application thereof
The invention discloses an ultrahigh-temperature ceramic material as well as a preparation method and application thereof, and relates to the technical field of ceramic materials. The preparation method of the ultrahigh-temperature ceramic material comprises the following steps: mixing Sc powder, B4C powder and graphite powder to obtain mixed powder; pre-pressing the mixed powder to obtain a pressed body; and carrying out hot pressed sintering on the compacted body to obtain a Sc2B1. 1C3.2 block, namely the ultrahigh-temperature ceramic material. The Sc2B1. 1C3.2 block with high purity, high compactness, high damage tolerance, good machinability, excellent mechanical property and high-temperature stability of 2000 DEG C or above is prepared by adopting an in-situ hot pressing sintering method, and the preparation method is simple. Therefore, the ultra-high-temperature ceramic material with high damage tolerance and workability is prepared, the ultra-high-temperature ceramic material has wide application prospects in the aerospace field, and the problems that an existing ultra-high-temperature ceramic material has intrinsic brittleness defects and is difficult to process are solved.
本发明公开一种超高温陶瓷材料及其制备方法与应用，涉及陶瓷材料技术领域。超高温陶瓷材料的制备方法包括如下步骤：将Sc粉、B4C粉和石墨粉进行混合，得到混合粉体；将混合粉体进行预压，得到压实体；将压实体进行热压烧结，得到Sc2B1.1C3.2块体，即所述超高温陶瓷材料。本发明采用原位热压烧结法制备得到具有高纯度、高致密性、高损伤容限、良好的可加工性、优异的力学性能以及2000℃以上的高温稳定性的Sc2B1.1C3.2块体，且制备方法简单。因此，本发明制备得到了具有高损伤容限和易加工性的超高温陶瓷材料，在航空航天领域技术广阔的应用前景，解决了现有超高温陶瓷材料具有本征脆性缺陷、难以加工的问题。
Ultrahigh-temperature ceramic material as well as preparation method and application thereof
The invention discloses an ultrahigh-temperature ceramic material as well as a preparation method and application thereof, and relates to the technical field of ceramic materials. The preparation method of the ultrahigh-temperature ceramic material comprises the following steps: mixing Sc powder, B4C powder and graphite powder to obtain mixed powder; pre-pressing the mixed powder to obtain a pressed body; and carrying out hot pressed sintering on the compacted body to obtain a Sc2B1. 1C3.2 block, namely the ultrahigh-temperature ceramic material. The Sc2B1. 1C3.2 block with high purity, high compactness, high damage tolerance, good machinability, excellent mechanical property and high-temperature stability of 2000 DEG C or above is prepared by adopting an in-situ hot pressing sintering method, and the preparation method is simple. Therefore, the ultra-high-temperature ceramic material with high damage tolerance and workability is prepared, the ultra-high-temperature ceramic material has wide application prospects in the aerospace field, and the problems that an existing ultra-high-temperature ceramic material has intrinsic brittleness defects and is difficult to process are solved.
本发明公开一种超高温陶瓷材料及其制备方法与应用，涉及陶瓷材料技术领域。超高温陶瓷材料的制备方法包括如下步骤：将Sc粉、B4C粉和石墨粉进行混合，得到混合粉体；将混合粉体进行预压，得到压实体；将压实体进行热压烧结，得到Sc2B1.1C3.2块体，即所述超高温陶瓷材料。本发明采用原位热压烧结法制备得到具有高纯度、高致密性、高损伤容限、良好的可加工性、优异的力学性能以及2000℃以上的高温稳定性的Sc2B1.1C3.2块体，且制备方法简单。因此，本发明制备得到了具有高损伤容限和易加工性的超高温陶瓷材料，在航空航天领域技术广阔的应用前景，解决了现有超高温陶瓷材料具有本征脆性缺陷、难以加工的问题。
Ultrahigh-temperature ceramic material as well as preparation method and application thereof
一种超高温陶瓷材料及其制备方法与应用
ZHAO GUORUI (Autor:in) / TIAN LI (Autor:in) / WANG ENGE (Autor:in)
31.12.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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