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Bonded body, substrate for power module with heat sink, heat sink, method for producing bonded body, method for producing substrate for power module with heat sink, and method for producing heat sink
A bonded body is provided in which an aluminum alloy member formed from an aluminum alloy, and a metal member formed from copper, nickel, or silver are bonded to each other. The aluminum alloy member is constituted by an aluminum alloy in which a concentration of Si is in a range of 1 mass % to 25 mass %. The aluminum alloy member and the metal member are subjected to solid-phase diffusion bonding. A compound layer, which is formed through diffusion of Al of the aluminum alloy member and a metal element of the metal member, is provided at a bonding interface between the aluminum alloy member and the metal member. A Mg-concentrated layer, in which a concentration of Mg is to 3 mass % or greater, is formed at the inside of the compound layer, and the thickness of the Mg-concentrated layer is in a range of 1 μm to 30 μm.
Bonded body, substrate for power module with heat sink, heat sink, method for producing bonded body, method for producing substrate for power module with heat sink, and method for producing heat sink
A bonded body is provided in which an aluminum alloy member formed from an aluminum alloy, and a metal member formed from copper, nickel, or silver are bonded to each other. The aluminum alloy member is constituted by an aluminum alloy in which a concentration of Si is in a range of 1 mass % to 25 mass %. The aluminum alloy member and the metal member are subjected to solid-phase diffusion bonding. A compound layer, which is formed through diffusion of Al of the aluminum alloy member and a metal element of the metal member, is provided at a bonding interface between the aluminum alloy member and the metal member. A Mg-concentrated layer, in which a concentration of Mg is to 3 mass % or greater, is formed at the inside of the compound layer, and the thickness of the Mg-concentrated layer is in a range of 1 μm to 30 μm.
Bonded body, substrate for power module with heat sink, heat sink, method for producing bonded body, method for producing substrate for power module with heat sink, and method for producing heat sink
TERASAKI NOBUYUKI (author) / NAGATOMO YOSHIYUKI (author)
2019-09-10
Patent
Electronic Resource
English
| European Patent Office | 2016
| European Patent Office | 2021
| European Patent Office | 2021