Corosion Resistant Coatings

brakemeister · Jun 29, 2005

I have an application in which I will be gluing a friction material to mild steel which needs to have a corosion resistant coating. Currently, the coating is zinc phosphate but I can switch to zinc di-chromate if need be. The adhesive is phenolic based and is baked at 400 degrees F.

My question is would one of these plating techniques bond more tightly to the steel and, thus, form a better substrate for the adhesive?

Goahead · Jun 29, 2005

Why not using zinc plating - galvanized steel?

http://www.welding-advisers.com/

MintJulep · Jun 29, 2005

Do you really need a plating at all on the surface that you are bonding to? The phenolic adhesive and the other friction material should from a pretty good corrosion barrier on that surface.

israelkk · Jun 29, 2005

As a base for adhesive bonding adhesion the zinc phosphate coating is much superior to zinc di-chromate.

brakemeister · Jun 29, 2005

The friction is only bonded to a small percentage of the surface of the part. The part has to pass a salt spray test.

Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Corosion Resistant Coatings

brakemeister

Automotive

Goahead

Aerospace

MintJulep

Mechanical

israelkk

Aerospace

brakemeister

Automotive

Similar threads

Part and Inventory Search

Sponsor