Metal corrosion

[Speed Devil]

I need some technical help wrt reactions between metals.

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I built a bike rack for my trailer and had it galvanized. I now want to put aluminium channels on for the wheels.

The problem is that when aluminium is mounted on a galvanized surface, the galvanizing causes the aluminium to corrode, albeit be it over a long period of time. Is there a way to prevent this corrosion from taking place?

 

In the high voltage industry we use a yellow paste called Denso Paste on copper-to-aluminium connections to prevent the metals from corroding each other.

Is there a similar type of compound for aluminium-to-galvanized connections?

 

[Drenalinjunkie]

Put a spacer made from PTFE or teflon between the two metals before bolting.

[Speed Devil]

Put a spacer made from PTFE or teflon between the two metals before bolting.

 

Thanks. I will look around to see where I can get a few

[AndreZA]

When you screw the two together put some rubber washers or cut up some tubes.

 

 

[Troi Sport]

www.boeshield.co.za

it works on boeings

[SwissVan]

www.boeshield.co.za

it works on boeings

 

Shamus works for Boeing...