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Preparation method of self-growing CNTs toughened ultrahigh-temperature ceramic block material
The invention discloses a preparation method of a self-growing CNTs toughened ultrahigh-temperature ceramic block material, which comprises the following steps: curing an ultrahigh-temperature ceramic organic precursor, carrying out ball-milling treatment, proportioning precursor powder and a catalyst to obtain mixed powder, carrying out pre-cracking treatment, and carrying out plasma sintering on a ceramic block to obtain the self-growing CNTs toughened ultrahigh-temperature ceramic block material. According to the invention, the CNTs are synthesized by effectively utilizing the gas released by cracking of the organic matters and are used for strengthening and toughening the ceramic block material, so that the fracture toughness of the composite material is improved; porous ceramics can be prepared by utilizing gas released by polymer cracking; the method has low requirements on equipment, has the advantages of simple synthesis process, low cost and the like, and can be used for preparing the multi-element solid solution ultrahigh-temperature ceramic at a relatively low temperature; in addition, the method can be widely applied to the field of ceramic/carbon-based composite materials and has the potential of large-scale industrial production.
本发明公开了一种自生长CNTs强韧化超高温陶瓷块体材料的制备方法，包括超高温陶瓷有机前驱体的固化处理、球磨处理、前驱体粉末与催化剂进行配比得到混合粉末、预裂解处理、等离子烧结陶瓷块体，本发明通过有效利用有机物裂解释放的气体合成CNTs用于强韧化陶瓷块体材料，提高复合材料的断裂韧性；利用聚合物裂解释放的气体可制备出多孔陶瓷；本方法对设备的要求低，具有合成工艺简单、成本低等优点，可在较低温度下实现多元固溶体超高温陶瓷的制备；此外，该方法可广泛应用于陶瓷/碳基复合材料领域，具有大规模工业生产的潜力。
Preparation method of self-growing CNTs toughened ultrahigh-temperature ceramic block material
The invention discloses a preparation method of a self-growing CNTs toughened ultrahigh-temperature ceramic block material, which comprises the following steps: curing an ultrahigh-temperature ceramic organic precursor, carrying out ball-milling treatment, proportioning precursor powder and a catalyst to obtain mixed powder, carrying out pre-cracking treatment, and carrying out plasma sintering on a ceramic block to obtain the self-growing CNTs toughened ultrahigh-temperature ceramic block material. According to the invention, the CNTs are synthesized by effectively utilizing the gas released by cracking of the organic matters and are used for strengthening and toughening the ceramic block material, so that the fracture toughness of the composite material is improved; porous ceramics can be prepared by utilizing gas released by polymer cracking; the method has low requirements on equipment, has the advantages of simple synthesis process, low cost and the like, and can be used for preparing the multi-element solid solution ultrahigh-temperature ceramic at a relatively low temperature; in addition, the method can be widely applied to the field of ceramic/carbon-based composite materials and has the potential of large-scale industrial production.
本发明公开了一种自生长CNTs强韧化超高温陶瓷块体材料的制备方法，包括超高温陶瓷有机前驱体的固化处理、球磨处理、前驱体粉末与催化剂进行配比得到混合粉末、预裂解处理、等离子烧结陶瓷块体，本发明通过有效利用有机物裂解释放的气体合成CNTs用于强韧化陶瓷块体材料，提高复合材料的断裂韧性；利用聚合物裂解释放的气体可制备出多孔陶瓷；本方法对设备的要求低，具有合成工艺简单、成本低等优点，可在较低温度下实现多元固溶体超高温陶瓷的制备；此外，该方法可广泛应用于陶瓷/碳基复合材料领域，具有大规模工业生产的潜力。
Preparation method of self-growing CNTs toughened ultrahigh-temperature ceramic block material
一种自生长CNTs强韧化超高温陶瓷块体材料的制备方法
FU YANQIN (Autor:in) / LI TAO (Autor:in) / HAN LIYUAN (Autor:in) / WANG PEI (Autor:in) / ZHANG YULEI (Autor:in) / BAO YIWANG (Autor:in)
28.06.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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