Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-strength compact silicon nitride ceramic material and preparation method thereof
The invention relates to the field of silicon nitride ceramic materials, in particular to a high-strength compact silicon nitride ceramic material and a preparation method thereof, which are used for solving the problem that the mechanical strength of an existing silicon nitride ceramic material cannot meet the application requirement of a high-requirement field due to poor compactness. According to the preparation method, a carbon source is supplemented in the Si3N4 sintering process, silicon carbide can be introduced into a sintered silicon nitride ceramic material, and due to the fact that the density of silicon nitride is almost the same as that of silicon carbide ceramic, the silicon nitride and the silicon carbide ceramic can be sintered into dispersed-phase and continuous-phase multiphase ceramic according to different proportions; the composite ceramic material is interwoven in structure and high in compactness, the SiC particles or whiskers have various strengthening and toughening effects on the Si3N4 matrix material, and the prepared composite material has more outstanding performance than single-phase Si3N4 or single-phase SiC, so that the mechanical performance of the prepared silicon nitride ceramic material is greatly improved.
本发明涉及氮化硅陶瓷材料领域，具体涉及一种高强度致密氮化硅陶瓷材料及其制备方法，用于解决现有的氮化硅陶瓷材料致密性差，导致其机械强度不能达到高要求领域的应用要求的问题；该制备方法通过在Si3N4烧结的过程中向其中补充碳源，能够在烧结的氮化硅陶瓷材料中引入碳化硅，由于氮化硅的密度与碳化硅陶瓷相差无几，所以氮化硅与碳化硅陶瓷可按照不同的比例烧结成分散相和连续相的复相陶瓷，这种复相陶瓷材料结构相互交织，致密性高，SiC粒子或晶须对Si3N4基体材料具有种种强化和增韧作用，所制备的复合材料具有比单相Si3N4或单相SiC的性能更加突出，因此，制备得到的氮化硅陶瓷材料的力学性能大幅度提升。
High-strength compact silicon nitride ceramic material and preparation method thereof
The invention relates to the field of silicon nitride ceramic materials, in particular to a high-strength compact silicon nitride ceramic material and a preparation method thereof, which are used for solving the problem that the mechanical strength of an existing silicon nitride ceramic material cannot meet the application requirement of a high-requirement field due to poor compactness. According to the preparation method, a carbon source is supplemented in the Si3N4 sintering process, silicon carbide can be introduced into a sintered silicon nitride ceramic material, and due to the fact that the density of silicon nitride is almost the same as that of silicon carbide ceramic, the silicon nitride and the silicon carbide ceramic can be sintered into dispersed-phase and continuous-phase multiphase ceramic according to different proportions; the composite ceramic material is interwoven in structure and high in compactness, the SiC particles or whiskers have various strengthening and toughening effects on the Si3N4 matrix material, and the prepared composite material has more outstanding performance than single-phase Si3N4 or single-phase SiC, so that the mechanical performance of the prepared silicon nitride ceramic material is greatly improved.
本发明涉及氮化硅陶瓷材料领域，具体涉及一种高强度致密氮化硅陶瓷材料及其制备方法，用于解决现有的氮化硅陶瓷材料致密性差，导致其机械强度不能达到高要求领域的应用要求的问题；该制备方法通过在Si3N4烧结的过程中向其中补充碳源，能够在烧结的氮化硅陶瓷材料中引入碳化硅，由于氮化硅的密度与碳化硅陶瓷相差无几，所以氮化硅与碳化硅陶瓷可按照不同的比例烧结成分散相和连续相的复相陶瓷，这种复相陶瓷材料结构相互交织，致密性高，SiC粒子或晶须对Si3N4基体材料具有种种强化和增韧作用，所制备的复合材料具有比单相Si3N4或单相SiC的性能更加突出，因此，制备得到的氮化硅陶瓷材料的力学性能大幅度提升。
High-strength compact silicon nitride ceramic material and preparation method thereof
一种高强度致密氮化硅陶瓷材料及其制备方法
LIU ZONGCAI (Autor:in) / XU JIANWEN (Autor:in) / PEI CHENYI (Autor:in) / XU YIWEN (Autor:in)
27.10.2023
Patent
Elektronische Ressource
Chinesisch
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