Abstract: A method of coating a metallic object with a substantially invisible protective coating, wherein the coating comprises a first layer, a second layer, and a third layer, each layer comprising a metal oxide or a nitride. The method comprises placing the object in an atomic layer deposition (ALD) reactor; depositing a first layer comprising a metal oxide or a nitride on a surface of the object by ALD; depositing a second layer comprising a metal oxide or a nitride on the first layer by ALD; and depositing a third layer comprising a metal oxide or a nitride on the second layer by ALD, thereby forming the protective coating on the object.
Type:
Grant
Filed:
August 28, 2015
Date of Patent:
September 11, 2018
Assignees:
University of Maryland, College Park, Trustees of the Walters Art Gallery, Inc.
Inventors:
Amy Elizabeth Marquardt, Eric Breitung, Raymond J. Phaneuf, Glenn Gates, Terry Weisser