HEAT EXCHANGER AND PROCESS FOR FABRICATING SAME

摘要

A flat hollow body having a fluid channel inside thereof is made from two plates 2 serving as heat exchanger components, by brazing the plates at the peripheral edge portions thereof. The plate 2 comprises a core layer 21 of aluminum or aluminum alloy, and an Al-Si alloy layer 22 covering each of opposite sides of the core layer 21. The core layer 21 contains Si diffusing thereinto from the Al-Si alloy layer 22. The alloy layer 22 has a portion up to 1.65 mass % in Si content. The flat hollow body has high corrosion resistance.