Process for manufacturing a device comprising brazes produced from metal oxalate

摘要

A process for manufacturing a device comprising at least a support and a component, joined together by at least one braze, includes a brazing operation which is carried out starting from a metal oxalate. Advantageously, it is a silver oxalate or a mixture of silver and copper oxalates, the component and/or the support being covered with a film comprising gold or copper in contact with said braze and the component possibly being a power component.

主权项

1. A process for manufacturing a device comprising at least one support and at least one component, comprising:
precipitating a soluble metal salt by oxalic acid or ammonium oxalate to obtain a metal oxalate; dissolving the metal oxalate in an aqueous-alcoholic solvent to obtain at least one of a suspension and a paste; heating an assembly of the at least one support and the at least one component at a heating rate greater than around 150° C./h; and joining the at least one support and the at least one component by brazing with the at least one of a suspension and a paste, wherein the metal oxalate generates nanoscale metallic particles, wherein a melting temperature of the nanoscale metallic particles is lower than a melting temperature of the metal in a bulk state.