Structure and manufacture of a heat sink with high heat...

Details Structure and manufacture of a heat sink with high heat... Structure and manufacture of a heat sink with high heat...

H - Electricity

01

L

H01L 23/36 (2006.01) B22D 18/02 (2006.01) C22C 21/04 (2006.01) F28F 7/00 (2006.01) F28F 21/08 (2006.01) H01L 23/373 (2006.01) H01L 23/467 (2006.01)

Patent

CA 2379600

The present invention of a structure and manufacture of a heat sink with high heat transmission mainly uses a shear stress caused by stirring to break or crush the solidified arborescent primary crystal at a solid/liquid two-phase area of a aluminum alloy to form a slag fluid with ball-filled solid crushed grit; then ceramic grains are added in and dispersed by the solid grains scattered in the liquid-phase metal; through continuous stirring, the aluminum alloy becomes a fine mixed fluid of ceramic and aluminum alloy without arborescent forms; finally, the external configuration of a heat sink is accomplished through directly compression casting by using the special nature of the aluminum alloy to mold the entire heat sink and to enhance the effect of heat dissipation of the heat sink of the same structure through the high heat transmission efficiency of the ceramic grains.

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