Patent ID: 7255931
Filing Date: 2007-08-14
Classification: B32B,C04B,H01L,H05K,Y10T

Abstract:
1. An aluminum/ceramic bonding substrate comprising: a ceramic substrate; and an aluminum member bonded directly to said ceramic substrate, said aluminum member containing an additive for decreasing a grain size of the aluminum member to 10 mm or less while preventing a drop in thermal conductivity of the aluminum member from a thermal conductivity of a member of pure aluminum from exceeding 20% of the thermal conductivity of the member of pure aluminum, said additive being an alloy containing titanium and boron, and said aluminum member containing 0.1 to 0.5 wt % of titanium, wherein said aluminum member has a thermal conductivity which is 80% or more of a thermal conductivity of a member of pure aluminum, and said aluminum member has a grain size of 10 mm or less.