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topic 17677

Anodize increasing adhesive


We use sulfuric anodize heat sink (Material:aluminum 1235). We don't use dyed color solution.We use inorganic solution(Nickel base )to get dark yellow color. But we found adhesive is not good for heat sink bonding epoxy compound. Is there anything wrong or we should try phosphorous acid anodize? Thickness >0.02 mm.

Thanks! Tony Chen
- Taiwan



I did some Aluminum bonding with good results, for preparation I did Phosphoric Anodizing to create Pores. The pores are crucial to get a good bonding. If I am correct you go sealing in a nickel solution after anodizing? If you do that you close the pores! Andy D'Haen
- Belgium

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