Method for coating graphite foil
AssigneeSgl Carbon SE
InventorsLudger Fischer, Martin Christ, Werner Langer
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Abstract
A method for applying a thin coating to a flat side (front side) and edge surfaces of a two-dimensional formation of graphite foil, includes applying the coating material to the flat side (front side) to be coated by electrostatic powder spraying followed by a sintering cycle or melting cycle. During the spraying, the two-dimensional formation is electrically contacted on a limited area virtually in the middle of its rear side, facing away from the spraying direction, on a limited area at a distance of at least 5 mm from the edges. A method for heat dissipation in electronic equipment, is also provided.
Claims12
A method for applying a coating to a flat front side and edge surfaces of a two-dimensional formation of graphite foil having an electrical conductivity in a surface plane of the foil being significantly higher than perpendicularly to the surface plane of the foil, the method comprising the following steps:
- applying a coating material by electrostatic powder spraying in a spraying direction;
- during the spraying step, electrically contacting approximately the middle of a rear side, facing away from the spraying direction, of the two-dimensional formation of graphite foil to be coated, on a limited area at a distance of at least 5 mm from the edges;
- and
- performing a sintering cycle or melting cycle of the sprayed-on powder.
Dependencies are inferred from the claim text.