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Preparation method of silicon nitride-based conductive ceramic and molding method of silicon nitride-based conductive ceramic cutting tool
The invention relates to the technical field of ceramic preparation, and in particular relates to a preparation method of silicon nitride-based conductive ceramic and a molding method of a silicon nitride-based conductive ceramic cutting tool. A microstructure of the silicon nitride-based conductive ceramic can be effectively optimized by adding a certain amount of a sintering aid prepared from MO and a rare earth oxide, so that the toughness and the strength of the silicon nitride-based conductive ceramic are significantly improved; improvement of the electric conductivity of the silicon nitride-based conductive ceramic is facilitated by adding a certain amount of conductive phase; the silicon nitride-based conductive ceramic can be processed by an electric spark machining technique; the ceramic cutting tool prepared from the silicon nitride-based conductive ceramic is suitable for a PVD coating technology; in addition, the ceramic cutting tool also plays toughening and strengthening roles; the improvement of the overall performance of the silicon nitride-based conductive ceramic is facilitated by adding a certain amount of a metal phase binder; the cutting tool is fabricated from the silicon nitride-based conductive ceramic through the molding method; the cutting tool with a complicated shape can be prepared; and the silicon nitride-based conductive ceramic cutting tool with relatively excellent performance can be obtained.
Preparation method of silicon nitride-based conductive ceramic and molding method of silicon nitride-based conductive ceramic cutting tool
The invention relates to the technical field of ceramic preparation, and in particular relates to a preparation method of silicon nitride-based conductive ceramic and a molding method of a silicon nitride-based conductive ceramic cutting tool. A microstructure of the silicon nitride-based conductive ceramic can be effectively optimized by adding a certain amount of a sintering aid prepared from MO and a rare earth oxide, so that the toughness and the strength of the silicon nitride-based conductive ceramic are significantly improved; improvement of the electric conductivity of the silicon nitride-based conductive ceramic is facilitated by adding a certain amount of conductive phase; the silicon nitride-based conductive ceramic can be processed by an electric spark machining technique; the ceramic cutting tool prepared from the silicon nitride-based conductive ceramic is suitable for a PVD coating technology; in addition, the ceramic cutting tool also plays toughening and strengthening roles; the improvement of the overall performance of the silicon nitride-based conductive ceramic is facilitated by adding a certain amount of a metal phase binder; the cutting tool is fabricated from the silicon nitride-based conductive ceramic through the molding method; the cutting tool with a complicated shape can be prepared; and the silicon nitride-based conductive ceramic cutting tool with relatively excellent performance can be obtained.
Preparation method of silicon nitride-based conductive ceramic and molding method of silicon nitride-based conductive ceramic cutting tool
WU SHANGHUA (author) / GU SHANGXIAN (author) / GUO WEIMING (author) / ZENG JUNJIE (author) / LI ANQIONG (author) / JIANG QIANGGUO (author) / GAO LENG (author) / ZHOU MAOPENG (author)
2015-05-13
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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