Die-casting aluminum alloys for high-efficiency thermal radiation components

초록

Al alloys with improved thermal conductivity and similar castability compared to the most commonly used Al-Si alloying system (ALDC12) were developed. Starting with the ALDC3 composition, we modified the alloying elements to investigate the effect on thermal conductivity and fluidity. The modified alloys had slightly higher thermal conductivity of similar to 110-116 W m(-1) K-1 compared to ALDC12 (92 W m(-1) K-1). The largest improvement in the thermal conductivity compared to ALDC12 was 26%. Moreover, the developed alloys showed a relative fluidity of similar to 80-88 % (depending on the composition) compared to ALDC12. Simulations confirmed that the heat generated from the internal parts of an electronic device could be effectively absorbed and discharged to the developed alloys as a heat sink.

키워드