Outboard durable transparent conductive coating on aircraft canopy
AssigneePPG Industries Ohio, Inc.
InventorsKrishna Uprety, Alexander Bimanand, Khushroo H. Lakdawala
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Abstract
A coated transparency including an electrically conductive multilayer stack is disclosed. The electrically conductive multilayer stack includes a first metal oxide layer including aluminum doped zinc (AZO), a metal layer including gold, and a second metal oxide layer including AZO. The electrically conductive multilayer stack has a low sheet resistance to provide radar attenuation and anti-static or static-dissipative properties, and has greater flexibility and resistance to corrosion than conventional multilayer stacks used to coat aircraft canopies and other substrates.
Claims18
A coated transparency comprising:
- a transparency;
- and
- an electrically conductive multilayer stack comprising:
- a first metal oxide layer comprising aluminum doped zinc oxide (AZO);
- a metal layer consisting of gold, the metal layer being substantially free of silver;
- and
- a second metal oxide layer comprising AZO,
- wherein the first metal oxide layer is positioned over the transparency, the metal layer is positioned over the first metal oxide layer, and the second metal oxide layer is positioned over the metal layer, and
- wherein the transparency is an aircraft canopy.
A coated transparency comprising:
- a transparency comprising an aircraft canopy;
- an electrically conductive multilayer stack comprising:
- a first metal oxide layer comprising aluminum doped zinc oxide (AZO);
- a metal layer, the metal layer being substantially free of silver;
- and
- a second metal oxide layer comprising AZO,
- wherein the first metal oxide layer is positioned over the transparency, the metal layer is positioned over the first metal oxide layer, and the second metal oxide layer is positioned over the metal layer;
- and
- a conductive layer in direct physical contact with the second metal oxide layer.
An aircraft canopy comprising:
- a transparency;
- and
- an electrically conductive multilayer stack comprising:
- a first metal oxide layer comprising aluminum doped zinc oxide (AZO);
- a metal layer, the metal layer being substantially free of silver;
- and
- a second metal oxide layer comprising AZO,
- wherein the first metal oxide layer is positioned over the transparency, the metal layer is positioned over the first metal oxide layer, and the second metal oxide layer is positioned over the metal layer.
Dependencies are inferred from the claim text.