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US 9,429,533 B2Granted
Durable transparent intelligent coatings for polymeric transparencies
AssigneeThe Boeing Company
InventorsKjersta L. Larson-Smith, Vasan S. Sundaram, David A. Bowen, Shawn M. Pare, Liam S. C. Pingree
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Abstract
A hard, transparent coating for a substrate and associated method for coating is disclosed. The coating includes alternating layers of a soft coating and a hard coating. The coating further includes a sensor. The electrical resistivity of the sensor may be measured to determine if the coating has been degraded. The coating may further include a hydrophobic outer layer.
Claims25
A method of monitoring the condition of a coated substrate, comprising:
- monitoring the electrical conductivity of a sensor embedded within two or more SiOxCy coatings formed on a substrate;
- wherein the values x and y are nonzero;
- and
- providing an indication of a change in the electrical conductivity of the sensor.
1 more element
A method of monitoring the condition of a coated substrate, comprising:
- forming a coating upon a substrate, the coating comprising:
- at least one soft coating;
- at least one hard coating;
- and
- embedding a sensor positioned between one soft coating of the at least one soft coating and one hard coating of the at least one hard coating;
- wherein the at least one soft coating and the at least one hard coating have the general formula SiOxCy, wherein the values x and y are nonzero;
- and wherein the soft coating composition is, in weight percent, 30-35% Si, 30-35% C and 30-35% O;
- monitoring the electrical conductivity of sensor embedded within the coating, wherein a change in the electrical conductivity of the sensor indicates a deterioration of the coating.
5 more elements
A method comprising:
- positioning a sensor on at least one soft coating of a substrate, the sensor configured to monitor a change of electrical conductivity;
- depositing at least one hard coating on the sensor and on at least a portion of the at least one soft coating, whereby the sensor is embedded within the coating;
- wherein the at least one soft coating and the at least one hard coating have the general formula SiOxCy, wherein x and y are nonzero;
- and wherein the soft coating composition is, in weight percent, 30-35% Si, 30-35% C and 30-35% O.
1 more element
Dependencies are inferred from the claim text.