Patent ID: 9663852
Date: 2017-05-30
CPC Classifications: B32B,C08K,C09D,C23C,Y10T

Claim:
1. A coated article having a blue-grey color comprising a substrate having a surface and having on at least a portion of the surface a multi-layer coating comprising in order: a first layer of a refractory metal oxycarbide having an oxygen content and a carbon content wherein the oxygen content is greater than the carbon content wherein the refractory metal oxycarbide of the first color layer is 20 to 35 atomic percent oxygen, 10 to 20 atomic percent carbon and 50 to 70 atomic percent refractory metal, a second color layer on top of the first color layer, wherein the second color layer comprises a layer of refractory metal oxycarbide having an oxygen content and a carbon content wherein the oxygen content is greater than the carbon content; wherein the oxygen content of the second color layer is greater than the oxygen content of the first color layer wherein the refractory metal oxycarbide of the second color layer is 40 to 65 atomic percent oxygen, 5 to 20 atomic percent carbon and 25 to 50 atomic percent refractory metal; and wherein the second color layer is a top layer.