Patent ID: 9028959
Filing Date: 2015-05-12
Classification: B22D,B22F,B32B,C09K,C22C,H01L,Y10T

Abstract:
1. A heat radiation member formed from a composite member made of a composite of magnesium or a magnesium alloy and SiC, wherein: said composite member contains more than 70 volume % of said SiC, said composite member has a coefficient of thermal expansion not lower than 3.7 ppm/K and not higher than 8 ppm/K, said composite member has porosity not higher than 8.5%, said composite member has thermal conductivity not lower than 180 W/m·K, said SiC has a network portion bonding said SiC to each other, and with any line segment having a length of 1 mm with respect to an actual dimension of said composite member being taken in a cross-section of said composite member, the number of intersections between said line segment and a contour line of an SiC aggregate constituted of said SiC and said network portion exceeds 50.