High thermal conductivity silicon carbide ceramic material and preparation method thereof

Abstract

The invention discloses a high thermal conductivity silicon carbide ceramic material and a preparation method thereof. The high thermal conductivity silicon carbide ceramic material is characterized by being prepared from the following raw materials in parts by weight: 70-80 parts of silicon carbide, 9-12 parts of silicon nitride, 4-6 parts of stainless steel powder, 6-8 parts of titanium powder, 2-3 parts of polyaluminum chloride, 1-2 parts of a silane coupling agent KH-570, 4-5 parts of cryolite powder, 3-4 parts of quartz, 2-4 parts of sintering additives and 80-100 parts of deionized water. The stainless steel powder added increases the sintering compactness of the ceramic and reduces the sintering temperature, so that the resources are saved; silicon nitride is added to improve the hardness, thermal conductivity and insulating property of the ceramic are improved; the added sintering additives improve the sintering performance of the ceramic and increase the sintering density, so that the service life of the ceramic is prolonged.

Description

technical field [0001] The invention relates to a high thermal conductivity silicon carbide ceramic material and a preparation method thereof, belonging to the technical field of ceramic production. Background technique [0002] Because of its good high-temperature thermal conductivity, chemical stability, oxidation resistance and superior mechanical properties, silicon carbide ceramics have good application prospects in the fields of biomaterials, lightweight high-strength materials, and high-temperature catalysis. The high thermal conductivity of ceramic materials has very high economic value and application value. For high-frequency, high-efficiency integrated circuits, it plays a greater role in reducing heat dissipation and power consumption. Although pure silicon carbide ceramics have excellent high-temperature performance, their applications are limited due to their brittleness, weak ability to resist impact loads, and difficulties in machining. Both silicon nitrid...

AI Technical Summary

Problems solved by technology

Although pure silicon carbide ceramics have excellent high-temperature performance, their application range is limited due to their brittleness, weak ability to resist impact loads, and difficulties in machining.