Development of Corrosion Resistant Aluminum Heat Exchanger, Part 1: Development of New Aluminum Alloy Sheets for Sacrificial Anode 860080
The sacrificial anodic effect of Al-Zn alloy reduces markedly in aluminium heat exchanger as car air-conditioner manufactured by vacuum brazing conventionally used, as zinc elements preferentially evaporate in vacuum-heating. It was found that Al-Sn alloy had superior electrochemical characteristics than Al-Zn alloy (AA7072) as the sacrificial anodic material used in vacuum brzing.
According to many experimental results, the new brazing sheet-fin with Al-Mn-Sn alloy core metal has been developed. This fin has favorable formability and prominent sacrificial anodic effect. Therefore, this fin is excellent material for car air-conditioner manufactured by vacuum brazing.
Citation: Hagiwara, M., Baba, Y., Tanabe, Z., Miura, T. et al., "Development of Corrosion Resistant Aluminum Heat Exchanger, Part 1: Development of New Aluminum Alloy Sheets for Sacrificial Anode," SAE Technical Paper 860080, 1986, https://doi.org/10.4271/860080. Download Citation
M. Hagiwara, Y. Baba, Z. Tanabe, T. Miura, Y. Hasegawa, K. Iljima
Sumitomo Light Metal Industries, Ltd., Nippon Denso Co., Ltd.