International Journal of Materials Research (formerly Zeitschrift fuer Metallkunde) · 2010 · 12 citations · 45 references
Natural SciencesMaterials EngineeringMaterials ScienceCeramic MaterialsCeramicsJoiningCeramic BondingJoining Of Dissimilar MaterialsStructural CeramicsAdvanced Structural CeramicsBonding TechniquesBonding To CeramicsDissimilar Material BondingJoining Of CeramicsJoining TechniquesNi-al AlloysTransient Liquid Phase Bonding
Abstract The vast majority of man-made devices contain joints between similar or dissimilar materials. Ideally, joining is fast, reliable, and inexpensive. In this work we demonstrate that robust refractory joints between Al 2 O 3 bodies can be produced rapidly and consistently by a transient-liquid-phase bonding process exploiting microengineered multilayer Ni/Nb/Ni interlayers. Samples were bonded for times ranging from 5 min to 6 h at 1400°C. Well-bonded assemblies were produced in all cases. Interlayers with remelt temperatures > 2200°C were achieved in as little as 5 min at 1400°C. In room-temperature bend tests, fractures initiated and propagated almost exclusively in the ceramic. Extension of this approach to other advanced ceramics should be possible, providing a rapid and reliable alternative to conventional joining approaches.
45