PURPOSE: To join ceramics and another metal by interposing an aluminum alloy contg. <(0.2W6.8%) silicon to the surface to be joined of the ceramics and heating the same.
CONSTITUTION: Aluminum alloy foil 2' contg. <(0.2W6.8%) silicon is interposed to the surface to be joined of the ceramic part 1 consisting of silicon nitride, etc. and the ceramic part and the metal 5 to be joined are heated under the pressure to diffusively join the boundary part between the part 1 and the aluminum foil 2'. The joining is executed under the conditions of 520W590°C joining temp., ≥30min holding time and 0.1kg/mm2 pressurizing force. The ceramics is thus used only for the part where service conditions are severe with high temp., corrosion, wear, etc. and the metal is used for the rest, by which the higher performance and higher reliability are obtd.
TOMITA TAKAAKI
KURASAWA MINORU
