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Fundamentals of The Shs Joining Process

Published online by Cambridge University Press:  15 February 2011

Robert W. Messler Jr  and
Timothy T. Orling
Robert W. Messler Jr
Affiliation:
Rensselaer Polytechnic Institute, Department of Materials Engineering, Troy, NY 12180
Timothy T. Orling
Affiliation:
Rensselaer Polytechnic Institute, Department of Materials Engineering, Troy, NY 12180
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Abstract

The process of self-propagating high-temperature synthesis offers potential for joining similar or dissimilar combinations of heat-resisting or refractory metals and refractory or corrosion resistant oxide or nonoxide ceramics or intermetallics by using the exothermy inherent in the synthesis reaction. The process offers unique capability for producing functionally gradient material joints between dissimilar materials to overcome mismatches in chemical, mechanical and physical properties, facility for incorporating reinforcing phases in the filler, and exceptional efficiency given that the energy for joining is largely internally generated. A systematic study of the fundamentals of the process critical for joining in either a primary or a secondary mode is being undertaken. Specialized fixtures are being employed to study the role of substrate temperature in bond formation and strength, and the role of precompaction density and applied pressure on joint density. A Gleeble thermomechanical simulator is being used to study the role of reactant composition, reactant particle size, heating rate and reaction mode, precompaction and applied pressure, and atmosphere. Ultimately, a model of the SHS process for joining will be developed to facilitate joint design, predict joint properties, and enable intelligent control.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 314: Symposium R – Joining and Adhesion of Advanced Inorganic Materials , 1993 , 177
Copyright
Copyright © Materials Research Society 1993

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