JOINING OF ALUMINA VIA COPPER/NIOBIUM/COPPER INTERLAYERS

摘要

Alumina has been joined at 1150 deg. C and 1400 deg. C using multilayer copperiobium/copper interlay- ers. Four-point bend strengths are sensitive to processing the temperature, bonding pressure, and furnace environ- ment(ambient oxygen partial pressure). Under optimum conditions, joints with reproducibly high room tem- perature strengths(≈240±20 MPa)can be produced; most failures occur within the ceramic.