Application of type II chemical conversion coatings (CCCS) using foaming agents
AssigneeHamilton Sundstrand Corporation
InventorsCody Coogan, Kevin R. Bordage, Blair A. Smith, Erik W. Karlen, Brodie Gross
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Abstract
In one aspect, a spray foam chemical conversion coating includes a non-hexavalent chromium aqueous chemical conversion coating solution, a foaming agent, and a propellant. In another aspect, a method of producing a corrosion-resistant coating includes spraying a foam chemical conversion coating on a surface of a metal substrate, allowing the foam chemical conversion coating to react with the surface, and removing excess foam chemical conversion coating from the surface. The foam chemical conversion coating contains no hexavalent chromium.
Claims17
A chemical conversion coating spray foam comprising:
- a non-hexavalent chromium aqueous chemical conversion coating solution comprising trivalent chromium;
- a foaming agent;
- and
- a propellant.
A method of producing a corrosion-resistant coating, the method comprising:
- spraying a chemical conversion coating spray foam on a surface of a metal substrate;
- allowing the chemical conversion coating spray foam to react with the surface;
- and
- removing excess chemical conversion coating spray foam from the surface;
- wherein the chemical conversion coating spray foam contains no hexavalent chromium and comprises:
- an aqueous chemical conversion coating solution comprising trivalent chromium;
- a foaming agent;
- and
- a propellant.
Dependencies are inferred from the claim text.