Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Silicon nitride conductive ceramic added with carbon fibers and preparation method of silicon nitride conductive ceramic
The invention belongs to the technical field of ceramic materials, and particularly relates to silicon nitride conductive ceramic and a preparation method thereof. The silicon nitride conductive ceramic provided by the invention comprises a silicon nitride sintered body and carbon fibers embedded in the silicon nitride sintered body, the carbon fibers comprise carbon fibers which are mutually stacked to form a three-dimensional network structure and carbon fibers in a free state, and the mass of the carbon fibers which are mutually stacked to form the three-dimensional network structure accounts for 97% or above of the total mass of the carbon fibers. Most of the carbon fibers are kept in a mutually communicated state to form a conductive network, the integrity of the conductive network does not suddenly break due to gradual reduction of the fiber content, so that the resistance is suddenly improved, and the effect of slowly improving the resistance is achieved; the conductivity of the whole material can be effectively regulated and controlled through the content of the carbon fibers. According to the silicon nitride conductive ceramic, the content of the carbon fibers in the silicon nitride conductive ceramic is low, and the material keeps good sintering activity and high density, so that the silicon nitride conductive ceramic has good mechanical properties.
本发明属于陶瓷材料技术领域，具体涉及一种氮化硅导电陶瓷及其制备方法。本发明提供的氮化硅导电陶瓷，包括氮化硅烧结体和包埋于所述氮化硅烧结体中的碳纤维；所述碳纤维包括相互堆积形成三维网络结构的碳纤维和处于游离状态的碳纤维，所述相互堆积形成三维网络结构的碳纤维的质量占碳纤维总质量的97％以上。碳纤维大都保持相互连通状态，构成导电网络，其导电网络的整体性不会因为纤维含量的逐渐降低而突然断裂导致电阻骤然提升，而是呈现出电阻缓慢提高的效果；可以通过碳纤维含量的高低有效调控整体材料的导电性。在本发明中，由于氮化硅导电陶瓷中碳纤维的含量较低，材料保持较好的烧结活性，致密度较高，从而具有良好的力学性能。
Silicon nitride conductive ceramic added with carbon fibers and preparation method of silicon nitride conductive ceramic
The invention belongs to the technical field of ceramic materials, and particularly relates to silicon nitride conductive ceramic and a preparation method thereof. The silicon nitride conductive ceramic provided by the invention comprises a silicon nitride sintered body and carbon fibers embedded in the silicon nitride sintered body, the carbon fibers comprise carbon fibers which are mutually stacked to form a three-dimensional network structure and carbon fibers in a free state, and the mass of the carbon fibers which are mutually stacked to form the three-dimensional network structure accounts for 97% or above of the total mass of the carbon fibers. Most of the carbon fibers are kept in a mutually communicated state to form a conductive network, the integrity of the conductive network does not suddenly break due to gradual reduction of the fiber content, so that the resistance is suddenly improved, and the effect of slowly improving the resistance is achieved; the conductivity of the whole material can be effectively regulated and controlled through the content of the carbon fibers. According to the silicon nitride conductive ceramic, the content of the carbon fibers in the silicon nitride conductive ceramic is low, and the material keeps good sintering activity and high density, so that the silicon nitride conductive ceramic has good mechanical properties.
本发明属于陶瓷材料技术领域，具体涉及一种氮化硅导电陶瓷及其制备方法。本发明提供的氮化硅导电陶瓷，包括氮化硅烧结体和包埋于所述氮化硅烧结体中的碳纤维；所述碳纤维包括相互堆积形成三维网络结构的碳纤维和处于游离状态的碳纤维，所述相互堆积形成三维网络结构的碳纤维的质量占碳纤维总质量的97％以上。碳纤维大都保持相互连通状态，构成导电网络，其导电网络的整体性不会因为纤维含量的逐渐降低而突然断裂导致电阻骤然提升，而是呈现出电阻缓慢提高的效果；可以通过碳纤维含量的高低有效调控整体材料的导电性。在本发明中，由于氮化硅导电陶瓷中碳纤维的含量较低，材料保持较好的烧结活性，致密度较高，从而具有良好的力学性能。
Silicon nitride conductive ceramic added with carbon fibers and preparation method of silicon nitride conductive ceramic
一种添加碳纤维的氮化硅导电陶瓷及其制备方法
WANG LUJIE (Autor:in) / QIAO ZHUHUI (Autor:in) / HUANG HAO (Autor:in) / LI TONGYANG (Autor:in) / YU YUAN (Autor:in) / TANG HUAGUO (Autor:in)
26.04.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2015
Silicon nitride conductive ceramic and preparation method thereof
| Europäisches Patentamt | 2020
PREPARATION METHOD FOR SILICON NITRIDE-BASED MULTIPHASE CONDUCTIVE CERAMIC
| Europäisches Patentamt | 2022
Silicon nitride ceramic slurry, silicon nitride ceramic substrate and preparation method thereof
| Europäisches Patentamt | 2024