Metal-composite bonding
First Claim
1. A method of bonding a high strength, thermally stable, graphite fiber reinforced glass matrix composite to a metal surface, the glass matrix having a low coefficient of thermal expansion and the graphite fiber having a highly negative axial coefficient of thermal expansion comprising depositing a thin layer of a eutectic alloy metal component to the bond surfaces of the composite and the metal, inserting a thin layer of eutectic alloy containing the metal component between the bond surfaces, placing the metal and composite bond surfaces together with the eutectic alloy in between and raising the temperature of the metal-alloy-composite to a temperature sufficient to melt the alloy and bond the composite.
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Abstract
A method of bonding a graphite fiber reinforced glass matrix composite to a metal structure comprising depositing a layer of eutectic alloy metal component to the bond surfaces of the metal and composite followed by placing the thus treated bond surfaces of the metal and composite together with a layer of eutectic alloy containing such metal therebetween. The metal-bond-composite is then heated to melt the alloy and bond the composite to the metal. Articles formed by such a process are also described. The method has particular utility in bonding cooling channel containing metal bases to graphite-glass composite laser mirrors.
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Citations
7 Claims
- 1. A method of bonding a high strength, thermally stable, graphite fiber reinforced glass matrix composite to a metal surface, the glass matrix having a low coefficient of thermal expansion and the graphite fiber having a highly negative axial coefficient of thermal expansion comprising depositing a thin layer of a eutectic alloy metal component to the bond surfaces of the composite and the metal, inserting a thin layer of eutectic alloy containing the metal component between the bond surfaces, placing the metal and composite bond surfaces together with the eutectic alloy in between and raising the temperature of the metal-alloy-composite to a temperature sufficient to melt the alloy and bond the composite.
Specification