Particle-enhanced joining of metal surfaces
First Claim
1. A method for joining a first metal surface to a second metal surface, said method comprising the steps:
- forming metallized particles having particulate cores with a hardness greater than that of the metal surfaces;
applying the particles to at least one of the metal surfaces;
bringing the surfaces together to form an interface; and
applying a compressive force to the surfaces in a direction generally normal to said interface.
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Accused Products
Abstract
A method for joining a first metal surface to a second metal surface employs metallized particles or protuberances disposed between said surfaces. The metallized particles include a core particulate composed of a material having a hardness greater than that of the metals to be bonded. By compressing the metal surfaces together in a generally normal or perpendicular direction, one or both of the metal surfaces is compressed into a metal region formed around the particulate core. In this way, very high local regions of stress are created which cause the metal to elastoplastically deform, enhancing the ability to form diffusion bonds. Alternatively, temporary electrical or other junctions may be formed by bringing the surfaces together under less rigorous conditions and/or using metals which are incapable of forming diffusion bonds.
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Citations
39 Claims
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1. A method for joining a first metal surface to a second metal surface, said method comprising the steps:
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forming metallized particles having particulate cores with a hardness greater than that of the metal surfaces; applying the particles to at least one of the metal surfaces; bringing the surfaces together to form an interface; and applying a compressive force to the surfaces in a direction generally normal to said interface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method for joining a first metal surface to a substrate, said method comprising:
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distributing hard particulate cores over at least selected portions of the substrate; forming a second metal surface over the particulate cores on the substrate, whereby metallized protuberances result, wherein said second metal surface is composed of the same metal as the first metal surface; positioning the first metal surface against the second metal surface; and applying a preselected compressive force to the first and second metal surfaces, whereby the surfaces are joined together at the locations of the protuberances. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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Specification