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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-thermal-conductivity and high-wear-resistance silicon nitride ceramic as well as preparation method and application thereof
The invention belongs to the technical field of ceramics, and discloses high-thermal-conductivity and high-wear-resistance silicon nitride ceramic as well as a preparation method and application thereof. The preparation method of the silicon nitride ceramic comprises the following steps: adding diamond with a metal coating, Si3N4, a sintering aid MgO and Yb2O3 powder into ethanol and a Si3N4 ball-milling medium, carrying out ball-milling and mixing, and carrying out ball-milling and drying to obtain mixed powder; and heating the mixed powder to 1600-1700 DEG C under the axial pressure of 30-100 Mpa and under a protective atmosphere, conducting heat preservation, and carrying out spark plasma sintering. The silicon nitride ceramic provided by the invention has high thermal conductivity andwear resistance, good cutting performance and long cutting life, and can be applied to the field of ceramic cutters.
本发明属于陶瓷技术领域，公开一种高导热高耐磨的氮化硅陶瓷及其制备方法和应用，所述氮化硅陶瓷是将具有金属镀层的金刚石、SiN、烧结助剂MgO和YbO粉料加入乙醇和SiN球磨介质中球磨混料，球磨干燥后得到混合粉体；将混合粉体在保护气氛下，加以30～100Mpa轴向压力，加热到1600～1700℃并保温，经过放电等离子烧结制得。本发明的氮化硅陶瓷具有高的导热性和耐磨性，具有良好的切削性能和切削寿命，可应用在陶瓷刀具领域中。
High-thermal-conductivity and high-wear-resistance silicon nitride ceramic as well as preparation method and application thereof
The invention belongs to the technical field of ceramics, and discloses high-thermal-conductivity and high-wear-resistance silicon nitride ceramic as well as a preparation method and application thereof. The preparation method of the silicon nitride ceramic comprises the following steps: adding diamond with a metal coating, Si3N4, a sintering aid MgO and Yb2O3 powder into ethanol and a Si3N4 ball-milling medium, carrying out ball-milling and mixing, and carrying out ball-milling and drying to obtain mixed powder; and heating the mixed powder to 1600-1700 DEG C under the axial pressure of 30-100 Mpa and under a protective atmosphere, conducting heat preservation, and carrying out spark plasma sintering. The silicon nitride ceramic provided by the invention has high thermal conductivity andwear resistance, good cutting performance and long cutting life, and can be applied to the field of ceramic cutters.
本发明属于陶瓷技术领域，公开一种高导热高耐磨的氮化硅陶瓷及其制备方法和应用，所述氮化硅陶瓷是将具有金属镀层的金刚石、SiN、烧结助剂MgO和YbO粉料加入乙醇和SiN球磨介质中球磨混料，球磨干燥后得到混合粉体；将混合粉体在保护气氛下，加以30～100Mpa轴向压力，加热到1600～1700℃并保温，经过放电等离子烧结制得。本发明的氮化硅陶瓷具有高的导热性和耐磨性，具有良好的切削性能和切削寿命，可应用在陶瓷刀具领域中。
High-thermal-conductivity and high-wear-resistance silicon nitride ceramic as well as preparation method and application thereof
一种高导热高耐磨的氮化硅陶瓷及其制备方法和应用
GUO WEIMING (Autor:in) / LUO SICHUN (Autor:in) / LIN SHINAN (Autor:in) / WU LIXIANG (Autor:in) / LIN HUATAI (Autor:in)
10.04.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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