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Protective Coating System

IP.com Disclosure Number: IPCOM000082943D
Original Publication Date: 1975-Mar-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Anschel, M: AUTHOR [+3]

Abstract

This coating system involves the application of two coating materials: (1) A layer of silica film (SiO(2)) deposited from a solution of silicon acetate and heat treated at a low temperature ( < or = 200 degrees C), and (2) A layer of polymeric silicone also cured at a low temperature.

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Protective Coating System

This coating system involves the application of two coating materials: (1) A layer of silica film (SiO(2)) deposited from a solution of silicon acetate and heat treated at a low temperature ( < or = 200 degrees C), and (2) A layer of polymeric silicone also cured at a low temperature.

These materials are applied conventionally as liquids and the combination has been shown to provide protection against corrosion and electromigration.

The SiO(2) may be deposited from an alcoholic solution of silicon acetate by spinning or dipping and then heat treated. This provides an excellent adhesive layer to alumina or glass substrates as well as to metal oxides, as it is believed to replace absorbed water on these surfaces.

The film is not perfectly continuous and remains permeable, however, it does increase the surface energy of the substrate and provides for increased adhesion for the silicone, which improves the system's impermeability. The silicone polymer also adheres to the SiO(2) with the displacement of water. This is a more flexible material and its thickness can be varied, providing a coating for various applications without introducing additional stresses.

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