What is AlSiC Metal Matrix Composite?
AlSiC is composite of Al metal and SiC ceramic. AlSiC is short for SiC ceramic particle reinforced aluminum matrix composite.
Like aluminum, SiC ceramic is also well known. It is carborundum. Still have no idea? Well, its most commonly applications are grindstone, grinding wheel and cutting disk, etc. carborundum's hardness is even higher than that of corundum and next to diamond. The reason SiC is chosen is because its high thermal conductivity.
The SiC in AlSiC is exactly the same. Only the material purity is demanded to achieve the high thermal conducting effect of AlSiC.
In industrialized production process, the SiC particles are first to be made into ceramics performs. These kind of ceramic differs from common ceramic by their evenly spread micro-holes inside and outside, like ceramic sponge. Then with the specialized equipment, in the vacuum circumstance, the melted aluminum is pressed into the micro-holes of the SiC ceramics to form the AlSiC composite.
The key benefit of the AlSiC composite is that it combines the low coefficient of thermal expansion ( CTE ) of ceramic, high thermal conductivity ( TC ) of pure aluminum and high strength of cast iron together, which make it especially fit for packaging of those high temperature electronics.
Fadi technology Co., Ltd. Has its own innovation and breakthrough both in its ceramic performs process and infiltration equipments.
The usual way of ceramic sintering technique of low temperature under oxygen environment may produce thick SiO2 outer layer on SiC, which gravely handicaps the thermal conduction. These products' CTE is usually under 180W/mK ( no matter how much marked ). Fadi's unique ceramic processing system lower the content of SiO2 to 1/8 of that of conventional ceramic, which contribute to CTE as high as 240W/mK, though, to be careful, only 200W/mK is marked.
Fadi AlSiC Product Samples
