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Surface effects in field-assisted sintering

Published online by Cambridge University Press:  31 January 2011

J. R. Groza ,
M. Garcia  and
J. A. Schneider
J. R. Groza
Affiliation:
Chemical Engineering and Materials Science Department, University of California at Davis, Davis, California 95616-5294
M. Garcia
Affiliation:
Lawrence Livermore National Laboratory, Livermore, California 94551-0808
J. A. Schneider
Affiliation:
Department of Mechanical Engineering, Mississippi State University, Mississippi State, Mississippi 39762
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Abstract

The more-stringent requirements for densification of new out-of-equilibrium powders have created a growing demand for nonconventional rapid sintering processes. Among those, field-assisted sintering techniques (FASTs) have seen a recent renewed interest motivated by their ability to consolidate a large variety of powder materials into high densities in short times. Characterization of a range of FAST-consolidated materials displayed relevant associated surface effects, such as grain boundary cleaning with direct grain-to-grain contact and advanced densification without sintering aids. These effects may be attributed to phenomena ranging from dielectric breakdown to a possible nonconventional plasma generation. Such surface effects provided a better intergranular bonding of powder particles during subsequent sintering

Type
Articles
Information
Journal of Materials Research , Volume 16 , Issue 1 , January 2001 , pp. 286 - 292
Copyright
Copyright © Materials Research Society 2001

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