Low temperature reactive bonding
AssigneeThe Regents of the University of California
InventorsDaniel M. Makowiecki, Richard M. Bionta
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Abstract
The joining technique requires no external heat source and generates very little heat during joining. It involves the reaction of thin multilayered films deposited on faying surfaces to create a stable compound that functions as an intermediate or braze material in order to create a high strength bond. While high temperatures are reached in the reaction of the multilayer film, very little heat is generated because the films are very thin. It is essentially a room temperature joining process.
Claims22
A low temperature reactive bonding process, comprising:
- forming a multilayer of thin alternating films of reactive materials;
- forming at least one layer of fusible material;
- positioning the thus formed multilayer and fusible material between members to be joined;
- and
- causing a reaction of the multilayer and consequent melting of the fusible material, thereby producing a bond between the members to be joined.
A process of joining members which requires no external heat source, comprising:
- forming thin multilayered films of reactive material on faying surfaces of members to be joined;
- providing at least a layer of a first material to be melted;
- and
- reacting the multilayered films to melt the first material and create a stable compound which functions as a braze material for creating a high strength bond between the members to be joined.
A method for joining two silicon members, comprising:
- depositing at least one layer of metallic material on a surface of each silicon member;
- depositing a plurality of alternating layers of different reactive materials onto each of the layers of metallic material, thereby forming multilayers of reactive materials;
- depositing at least a second layer of metallic material on each of the multilayers of reactive materials;
- placing the silicon members together, such that the second layers of metallic material are in a face-to-face relation;
- and
- causing a reaction of the multilayers of reactive materials to melt the layers of metallic materials to produce a braze material whereby the layers of metallic material are bonded together and to the silicon members.
Dependencies are inferred from the claim text.