Abstract:
The present inventors have observed that in some applications of reactive composite joining there is escape of a portion of the molten joining material through the edges of the joining regions. Such escape is not only a waste of expensive material (e.g. gold or indium) but also a reduction from the optimal thickness of the joining regions. In some applications, such escape also presents risk of short circuits or even fire. In this invention, two approaches are taken toward preventing damage to surroundings by the escape of molten joining material. First, escape may be prevented by trapping or containing the molten material near the joint, using barriers, dams, or similar means. Second, escape may be reduced by adjusting parameters within the joint, such as solder composition, joining pressure, or RCM thickness.
Abstract:
A process and apparatus for the reactive multilayer joining of components utilizing metallization techniques to bond difficult-to-wet materials and temperature sensitive materials to produce joined products.
Abstract:
A process and apparatus for the reactive multilayer joining of components utilizing metallization techniques to bond difficult-to-wet materials and temperature sensitive materials to produce joined products.
Abstract:
A method for joining component bodies (10A, 10B) of material over bonding regions of large dimensions by disposing a plurality of substantially contiguous sheets (12) of reactive composite materials between the bodies and adjacent sheets of fusible material (14A, 14B). The contiguous sheets (12) of the reactive composite material are operatively connected by an ignitable bridging material (22) so that an igniting reaction in one sheet (12) will cause an igniting reaction in the other. An application of uniform pressure and an ignition of one or more of the contiguous sheets (12) of reactive composite material causes an exothermic thermal reaction to propagate through the bonding region, fusing any adjacent sheets of fusible material (14A, 14B) and forming a bond between the component bodies (10A, 10B).
Abstract:
The invention includes a method of joining two components (102 103). The Method includes providing at least two components (102, 103) to be joined, a reactive multilayer foil (101), and a compliant element (2), placing the reactive multilayer foil (101) between the at least two components (102, 103), applying pressure on the two components (102, 103) in contact with the reactive multilayer foil (101) via the compliant element (2), and initiating a chemical transformation of the reactive multilayer foil (101) so as to physically join the at least two components (102, 103). The invention also includes two components (102, 103) joined using the aforementioned method.
Abstract:
A method for bonding components with a reactive multilayer foil, wherein during bonding, the components are held at a temperature or temperature gradient chosen to reduce thermal stress in the resulting bonded product.
Abstract:
A method for bonding components with a reactive multilayer foil, wherein during bonding, the components are held at a temperature or temperature gradient chosen to reduce thermal stress in the resulting bonded product.
Abstract:
The present inventors have observed that in some applications of reactive composite joining there is escape of a portion of the molten joining material through the edges of the joining regions. Such escape is not only a waste of expensive material (e.g. gold or indium) but also a reduction from the optimal thickness of the joining regions. In some applications, such escape also presents risk of short circuits or even fire. In this invention, two approaches are taken toward preventing damage to surroundings by the escape of molten joining material. First, escape may be prevented by trapping or containing the molten material near the joint, using barriers, dams, or similar means. Second, escape may be reduced by adjusting parameters within the joint, such as solder composition, joining pressure, or RCM thickness.