Common ceramic materials with high thermal conductivity
Release time:
2024-10-06
The heat transfer performance of ceramic materials has an extremely important influence on their expansion of application fields. To a certain extent, increasing the thermal conductivity of ceramic materials through specific methods will improve their ability of heat conduction, heat convection and heat radiation, and further expand their application fields. Ceramic materials with high thermal conductivity mainly include oxides, nitrides, carbides, borides, etc., such as polycrystalline diamond ceramics, AlN, BeO, Si3N4, SiC and other ceramic materials.
The heat transfer performance of ceramic materials has an extremely important influence on their expansion of application fields. To a certain extent, increasing the thermal conductivity of ceramic materials through specific methods will improve their ability of heat conduction, heat convection and heat radiation, and further expand their application fields. Ceramic materials with high thermal conductivity mainly include oxides, nitrides, carbides, borides, etc., such as polycrystalline diamond ceramics, AlN, BeO, Si3N4, SiC and other ceramic materials.
1. Polycrystalline diamond ceramics (PCD ceramics)
The heat transfer capacity of diamond is very strong. The theoretical value of its single crystal thermal conductivity at room temperature is 1642W/m · K, and the measured value is 2000W/m · K. However, large diamond single crystals are difficult to prepare and expensive. In the process of polycrystalline diamond sintering, it is often necessary to add sintering aids to promote the adhesion between diamond powders, so as to obtain high thermal conductivity PCD ceramics. However, in the process of high temperature sintering, the sintering aids will catalyze the carbonization of diamond powder, so that the polycrystalline diamond is no longer insulated. Diamond small single crystal is often added to thermal conductive ceramics as a reinforcement material to improve the thermal conductivity of ceramics.
Polycrystalline diamond ceramics are both engineering materials and new functional materials. At present, polycrystalline diamond ceramics have been widely used in modern industry, national defense and high-tech fields due to their excellent mechanical, thermal, chemical, acoustic, optical and electrical properties.
Mobile phone website
For all new and old customers
High quality qualified products!
Copyright © 2023 Yixing Yashang Ceramics Co., Ltd 丨 Business License
