Abstract:
To provide a laminate having a high heat dissipation effect, having no problem such as cracking of an insulating substrate even when a thermal load is applied, and having no void or the like in a metal film, and a method of manufacturing the laminate. A laminate according to the present invention includes an insulating substrate 10, an intermediate layer 50 formed on a surface of the substrate 10 and containing a metal or an alloy as a main component, and a circuit layer 20 that is a metal film formed of a copper powder having a hydrogen content of 0.002% by mass or less and laminated on the intermediate layer 50. In the laminate, an interface between the intermediate layer 50 and the circuit layer 20 is plastically deformed.
Abstract:
A heat dissipation structure having high joining strength during a cooling/heating cycle and a high cooling efficiency, a power module, a method of manufacturing the heat dissipation structure, and a method of manufacturing the power module is provided. A power module 1 of the present invention includes: a ceramic substrate 10 having an insulation quality; a metal member 50 containing a metal or an alloy and joined by a brazing material on a surface of the ceramic substrate 10; and a heat dissipation member 40 formed by accelerating a powder containing a metal or an alloy with a gas, and by spraying and depositing the powder in a solid phase state on a surface of the metal member 50, wherein a heat pipe 60 is embedded in the heat dissipation member 40.
Abstract:
A member with flow passage that is improved in adhesion between a wall surface constituting a flow passage and a metallic member, and a method for manufacturing the same are provided. A member with flow passage 100 includes: a base member 101 made of metal or alloy; a plate-like member 102 made of metal or alloy in a plate-like shape, including two flat plate portions 11 that are positioned at both widthwise ends and have main surfaces passing over one and the same plane, and a convex portion 12 that is provided between the two flat plate portions 11 and has a cross section shaped in a thickness direction so as to protrude with respect to the flat plate portions, and forming the flow passage 106; and a metal deposit layer 105 that is formed by, while main surfaces of the flat plate portions 11 opposite to a top of the convex portion 12 are facing the base member 101, accelerating powder of metal or alloy together with a gas, and spraying and depositing the powder in a solid-phase state on a surface of the plate-like member 101 at the top side of the convex portion 12 and a surface of the base member 101.
Abstract:
A brazing alloy for bonding in air can be melted at a temperature below the melting point ofAg and can improve the high-temperature durability of the bonded article. The brazing alloy for bonding in air contains Ag, B, and Si, as essential components, in which the total of constituent elements except for Ag is set to more than 50% by volume and not more than 90% by volume, Si content in the constituent elements except for Ag is set to more than 22% by volume, and B content in the constituent elements except for Ag is set to more than 14% by volume. For example, as shown in Fig. 4 , in a bonded layer 13 of a bonded specimen of the present invention, after holding at high temperature, no void 16 ( Fig. 6 ) as observed in a bonded specimen after holding at high temperature of a Comparative Sample was observed, the brazing alloy was sufficiently melted, and superior gas sealing characteristics were maintained even after holding at high temperature for a long time.