초록 ▼

A method for bonding graphite sheets to a metallic substrate. The metallic substrate is provided with a coating of low melt metal which forms an intermetallic phase or zone at the interface between the substrate and coating. The coated substrate while in solidified condition is placed in a press bet

A method for bonding graphite sheets to a metallic substrate. The metallic substrate is provided with a coating of low melt metal which forms an intermetallic phase or zone at the interface between the substrate and coating. The coated substrate while in solidified condition is placed in a press between a pair of graphite sheets. Heat is applied to the substrate and graphite sheets while under pressure to a temperature slightly above the melting point of the substrate coating but below the temperature which will destroy the intermetallic interface. The substrate and graphite sheets are cooled while maintained under pressure in the press with the graphite sheets becoming firmly bonded to the metallic substrate by the resolidified metal coating.

대표청구항 ▼

The method of coating sheet steel base material with graphite, which includes the steps of providing a steel sheet having an intermetallic phase bonded tin coating on at least one side of the steel base; placing a graphite sheet on the tin coated side of the steel base sheet to form a sandwich pack;

The method of coating sheet steel base material with graphite, which includes the steps of providing a steel sheet having an intermetallic phase bonded tin coating on at least one side of the steel base; placing a graphite sheet on the tin coated side of the steel base sheet to form a sandwich pack; pressing the tin coated and graphite sheets of the pack together while conductively heating the pack to a temperature slightly higher than the melting point of tin penetrating the graphite sheet with liquidus tin resulting from the heating, while maintaining the heated pack under pressure; and then cooling the sandwich pack under pressure to solidify the liquidus tin to form a bond between the graphite sheet and the tin coating on the steel base material.