How is the corrosion resistance of CuproBraze heat exchanger compared to aluminium one?
The corrosion mechanisms of copper alloys and aluminium alloys are generally different. Copper alloys tend to corrode more uniformly, over the entire surfaces at known rates, whereas aluminium is more likely to corrode locally by pitting mechanism, resulting eventually in holes. The corrosion of copper is thus more predictable. However, this answer is very much simplified. More in-depth answers can be found in the conference papers listed in the Literature-section.
