A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
METHOD FOR MANUFACTURING SILICON NITRIDE SINTERED COMPACT
The present invention is directed to a method for producing a silicon nitride sintered material, the method including heating a molded article, which contains a silicon nitride powder having a β phase ratio of 80% or more, a dissolved oxygen content of 0.2% by mass or less, and a specific surface area of 5 to 20 m2/g, and a sintering auxiliary containing a compound having no oxygen bond, and which has an overall oxygen content controlled to be 1 to 15% by mass and an aluminum element overall content controlled to be 800 ppm or less, to a temperature of 1,200 to 1,800°C in an inert gas atmosphere under a pressure of 0 MPa ·G or more and less than 0.1 MPa ·G to sinter the silicon nitride.In the present invention, there can be provided a method for producing a silicon nitride sintered material, which method is advantageous in that a silicon nitride sintered material having high thermal conductivity can be obtained even when using a silicon nitride powder having a high β phase ratio and conducting calcination under normal pressure or substantially normal pressure.
METHOD FOR MANUFACTURING SILICON NITRIDE SINTERED COMPACT
The present invention is directed to a method for producing a silicon nitride sintered material, the method including heating a molded article, which contains a silicon nitride powder having a β phase ratio of 80% or more, a dissolved oxygen content of 0.2% by mass or less, and a specific surface area of 5 to 20 m2/g, and a sintering auxiliary containing a compound having no oxygen bond, and which has an overall oxygen content controlled to be 1 to 15% by mass and an aluminum element overall content controlled to be 800 ppm or less, to a temperature of 1,200 to 1,800°C in an inert gas atmosphere under a pressure of 0 MPa ·G or more and less than 0.1 MPa ·G to sinter the silicon nitride.In the present invention, there can be provided a method for producing a silicon nitride sintered material, which method is advantageous in that a silicon nitride sintered material having high thermal conductivity can be obtained even when using a silicon nitride powder having a high β phase ratio and conducting calcination under normal pressure or substantially normal pressure.
METHOD FOR MANUFACTURING SILICON NITRIDE SINTERED COMPACT
VERFAHREN ZUR HERSTELLUNG EINES SILIZIUMNITRIDSINTERKÖRPERS
PROCÉDÉ DE FABRICATION D'UN COMPRIMÉ FRITTÉ DE NITRURE DE SILICIUM
MABUCHI TOSHIROU (author) / WAKAMATSU SATORU (author)
2024-05-15
Patent
Electronic Resource
English
METHOD FOR MANUFACTURING SILICON NITRIDE SINTERED COMPACT
| European Patent Office | 2022
METHOD FOR MANUFACTURING SILICON NITRIDE SINTERED COMPACT
| European Patent Office | 2021