HEAT RADIATION STRUCTURE, POWER MODULE, MANUFACTURING METHOD OF HEAT RADIATION STRUCTURE, AND MANUFACTURING METHOD OF POWER MODULE

摘要

PROBLEM TO BE SOLVED: To provide a heat radiation structure which has high bond strength in a cold cycle and achieves high cooling efficiency, a power module, a manufacturing method of the heat radiation structure, and a manufacturing method of the power module.

SOLUTION: A power module 1 includes: an insulative ceramic substrate 10; a metal member 50 which is joined to a surface of the ceramic substrate 10 with a brazing material and is formed by a metal or alloy; and a heat radiation part 40 formed on a surface of the metal member 50 by accelerating powder, formed by a metal or alloy, with a gas and blowing the powder and the gas onto the surface while keeping the solid state of the powder to deposit the powder thereon. A heat pipe 60 is buried in the heat radiation part 40.

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