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Al coating, application advise and life cycle prediction

April 4, 2008

Dear All,

This is the second time that I am sending the same querry but there have been noone answering and we are in an urge for an advise?

Is the application so uncommon or beyond interest of all?


"A client of ours ordered an Aluminum coating on small pieces of 130mm diameter and 80mm length. The pieces are going to be used in a hot zinc bath (galvanizing pool) under 450 - 550 °C of service temperature.

They are planning to convert the outer surface of the pieces from Al to Al2O3 with some treatment that they will perform themselves.

They requested us to command on the suitable thickness (microns) and predicted life cycle of thermal sprayed aluminum for this kind of
application.

Has anyone got involved in a similar Project? Is this a possible application? Your comments are very important to us as we have not seen such an application in literature."

Thank you all in advance.

Kindest Regards;

Ümran Baþak GÜLEKEN
painting and metallizing shop employee - Ankara, TURKEY

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April 4, 2008

Thermal sprayed aluminum is very uneven and will only cover the portion of the part that faces the "gun".
Anodize - Al2O3- will not stand up to 450 °C. It does not work well in some operations at 450 °F.
I think that you have a problem, unless you have left out pertinent information.

James Watts
- Navarre, Florida