Patent ID: 11891700
Assignee: THE BOEING COMPANY
Field: Surface technology, coating (Chemistry)
Classification: CPC C  B  Y | IPC B  C

Claim 17:
18. A method of reducing or eliminating at least one electrochemical interaction between a metallic coating and a polymer in a formed article, the method comprising:
introducing particles of a metal alloy powder to a gas stream;
directing the gas stream toward an electrochemical insulating layer present on a surface of a polymer, wherein the gas stream has a temperature and a pressure adjusted to prevent thermal softening or ablation of the surface of the electrochemical insulating layer;
forming a metallic coating on at least a portion of the electrochemical insulating layer;
reducing or eliminating electrochemical interaction between the metallic coating and the polymer; and
further comprising introducing an additional metallic layer comprising a cold sprayed metal comprising niobium on at least a portion of the metallic coating,
wherein the metal alloy powder comprises aluminum, copper, gold, silver, or a combination thereof;
wherein the metallic coating has a surface roughness configured to be coatable or paintable; and
wherein the metallic coating imparts electrical EMI resistance or lightning protection to the formed article.