초록 ▼

A composite coating provides a solderable surface on materials that cannot otherwise be soldered. The solderable coating is comprised of a composite layer of two components made of metals or metal alloys that function as a solderable material and as a material that enhances solder flow. A thin layer

A composite coating provides a solderable surface on materials that cannot otherwise be soldered. The solderable coating is comprised of a composite layer of two components made of metals or metal alloys that function as a solderable material and as a material that enhances solder flow. A thin layer of at least one of the two components can also be incorporated along with the composite layer. A solderable coating can be deposited on a non-solderable surface by any of a variety of thermal spray techniques, including plasma spraying or wire arc spraying. These solderable coatings are particularly useful in the manufacturing of high power electronic components.

대표청구항 ▼

[ What is claimed is:] [1.] A solderable coating formed on a surface of a substrate that is normally difficult to solder by tin alloy solder comprising:a composite layer of two components formed on and adhered to a surface of the substrate, wherein the first component is a solderable material that h

[ What is claimed is:] [1.] A solderable coating formed on a surface of a substrate that is normally difficult to solder by tin alloy solder comprising:a composite layer of two components formed on and adhered to a surface of the substrate, wherein the first component is a solderable material that has a higher melting point than and is wettable by the solder and the second component is a material that enhances solder flow and that has a lower melting point than the first component that is higher than that of the solder, and wherein the first component and the second component are made of metal or a metal alloy, and wherein the components are formed of discrete particles of the material forming each component mixed together and adhered to each other by melting and solidification of at least the surfaces of the particles such that on a microstructural level there are two separately identifiable components, to form a cohesive and adhering coating layer.