Patent ID: 8164909
Filing Date: 2012-04-24
Classification: C04B,H01L,H05K,Y10S,Y10T

Abstract:
1. A method of manufacturing an Al/AlN joint material, comprising: a first step of obtaining an AlN sintering body having a porous layer on a surface thereof by sintering a powder of AlN: a second step of joining an Al member to the porous layer via a brazing material: a third step of removing a weak porous layer by honing, the weak porous layer being formed on a surface of the AlN sintering body on which the Al member is joined: and a fourth step of heating and pressurizing the AlN sintering body and the Al member under a vacuum, with the brazing material being provided between the AlN sintering body and the Al member, wherein the third step is carried out before the second step, and honing is performed so that the maximum roughness height Ry (JIS B0601-1994) becomes within 1.50 to 3.30 μm, in the second step, the Al member is joined on the surface of the porous layer via the brazing material, and in the fourth step, a joint surface is set in the vacuum, a liquid phase occurs in the brazing material by heating, and the liquid of the brazing material infiltrates into the porous layer of the AlN sintering body.