The Thermal Conductivity Of Metallic Ceramics

Measured total thermal conductivity of these metallic ceramics.

The thermal conductivity of metallic ceramics.

Transition metal carbides nitrides and borides can be called metallic ceramics because they are electronically conductive and extremely hard. Information of silicon carbide. Thermal conductivity k is the quantity of heat transmitted due to an unit temperature gradient in unit time under steady conditions in a direction normal to a surface of the unit area. High temperature an unusual feature of the thermal con ductivity of tic x and zrc x is the increase in k with increasing temperature t in the high temperature range as found by taylor.

2 3 from 0 c to 2 000 c k increases approximately linearly figure 1. Silicon carbide sc1000 200. Their various applications include cutting and grinding tools thermal barrier coatings diffusion resistant thin films interconnects and superconductivity devices. Thermal conductivity k is used in the fourier s equation.

Looking at the values quoted in various handbooks papers and data sheets two things are observed. The problem with the thermal conductivity of ceramics is the dependence on the composition grain size and manufacturing process which make it rather difficult to obtain a reliable value from literature only. Aluminum nitride an216a 150. Ceramics with high or low thermal conductivity can be selected from our materials list.

Calculate overall heat transfer coefficient. In a certain range increasing the thermal conductivity of ceramic materials by specific methods will improve its ability of heat conduction heat convection and heat radiation so as to further expand its application field. The thermal conductivity of ceramic materials plays an important role in its application. Calculate conductive heat transfer.