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Connecting method for fiber reinforced ceramic matrix composite special-shaped structural parts
The invention discloses a method for connecting fiber reinforced ceramic matrix composite special-shaped structural parts, and relates to the technical field of composites. According to the invention, on one hand, the problem of easy agglomeration during direct addition of the nanoscale reinforcement is overcome, and on the other hand, the content of the nanoscale reinforcement in the connecting layer can be remarkably increased, and finally, the connecting strength is remarkably improved. Layered ceramic (such as Ti3SiC2 and the like) has a hexagonal crystal structure, has the characteristics of ceramic and metal, such as high modulus, high fracture toughness, good thermal shock resistance and the like, and can improve the defect of high brittleness of traditional ceramic to a certain extent as a connecting layer material. And meanwhile, the self-propagating reaction of the Ti-Si-C system at high temperature is beneficial to reducing the connection temperature, the thickness of the Ti3SiC2 layer generated in situ is within the nanoscale range, the unique valence bond combination and the nanoscale lamellar structure of the Ti3SiC2 layer can generate plastic deformation similar to metal, and the method has important significance on improving the brittleness of a connector.
本发明公开了一种纤维增强陶瓷基复合材料异形结构件的连接方法，涉及复合材料技术领域。本发明一方面克服了直接添加纳米级增强体时易出现的团聚问题，另一方面可使连接层中纳米增强体含量显著提高，最终使得连接强度得到显著提高。而层状陶瓷(如Ti3SiC2等)具有六方晶体结构，兼有陶瓷和金属的特性，如高模量、高断裂韧性、良好的抗热震性能等，作为连接层材料可一定程度上改善传统陶瓷脆性大的缺点。同时Ti‑Si‑C体系在高温时发生的自蔓延反应有助于降低连接温度，且原位生成的Ti3SiC2层厚在纳米级范围其独特的价键组合和纳米级层片结构，能够发生类似金属的塑性变形，对改善接头的脆性具有重要意义。
Connecting method for fiber reinforced ceramic matrix composite special-shaped structural parts
The invention discloses a method for connecting fiber reinforced ceramic matrix composite special-shaped structural parts, and relates to the technical field of composites. According to the invention, on one hand, the problem of easy agglomeration during direct addition of the nanoscale reinforcement is overcome, and on the other hand, the content of the nanoscale reinforcement in the connecting layer can be remarkably increased, and finally, the connecting strength is remarkably improved. Layered ceramic (such as Ti3SiC2 and the like) has a hexagonal crystal structure, has the characteristics of ceramic and metal, such as high modulus, high fracture toughness, good thermal shock resistance and the like, and can improve the defect of high brittleness of traditional ceramic to a certain extent as a connecting layer material. And meanwhile, the self-propagating reaction of the Ti-Si-C system at high temperature is beneficial to reducing the connection temperature, the thickness of the Ti3SiC2 layer generated in situ is within the nanoscale range, the unique valence bond combination and the nanoscale lamellar structure of the Ti3SiC2 layer can generate plastic deformation similar to metal, and the method has important significance on improving the brittleness of a connector.
本发明公开了一种纤维增强陶瓷基复合材料异形结构件的连接方法，涉及复合材料技术领域。本发明一方面克服了直接添加纳米级增强体时易出现的团聚问题，另一方面可使连接层中纳米增强体含量显著提高，最终使得连接强度得到显著提高。而层状陶瓷(如Ti3SiC2等)具有六方晶体结构，兼有陶瓷和金属的特性，如高模量、高断裂韧性、良好的抗热震性能等，作为连接层材料可一定程度上改善传统陶瓷脆性大的缺点。同时Ti‑Si‑C体系在高温时发生的自蔓延反应有助于降低连接温度，且原位生成的Ti3SiC2层厚在纳米级范围其独特的价键组合和纳米级层片结构，能够发生类似金属的塑性变形，对改善接头的脆性具有重要意义。
Connecting method for fiber reinforced ceramic matrix composite special-shaped structural parts
一种纤维增强陶瓷基复合材料异形结构件的连接方法
ZHAO FENGLING (author) / DU ZHENGHAO (author) / GUO HUI (author) / HU KEJUN (author) / ZHU FUXIAN (author) / HAN WENQIN (author) / SHI QINGHE (author)
2024-06-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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