coefficient of heat expansion

Proceed from different heat coefficient of expansion of two different metals for thermal bimetals with dish shape, the calculation modul was given.

If there is a large difference in the coefficient of expansion, there will be cracks in the ceramic layer or the phenomenon of exploding porcelain in the alternating heat and cold.

Synthetic diamond is competitive in heat dispersing materials, because it has high thermal conductivity, low coefficient of thermal expansion and lower price.