| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a heat transmission member for suppressing cracking of a metal coating due to a difference in thermal expansion from an opposite member and a manufacturing method thereof, and a power module using the same. <P>SOLUTION: The heat transmission member 1 includes a base material 2 and the metal coating 3 having a coefficient of thermal expansion between the coefficient of thermal expansion of the opposite member 4 and the coefficient of thermal expansion of the base material 2. The metal coating 3 includes a base material-side surface 31 fixed to the base material 2 and an opposite-side surface 32 where the opposite member 4 for heating body mounting which has the smaller coefficient of thermal expansion than the base material 2 is fixed. In the metal coating 3, a groove 30 is formed which is hollowed from the opposite-side surface 32 to the base material-side surface 31. A space portion 35 which allows the metal coating 3 to thermally deform is left partially in the groove 30. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
