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
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Groza, J.R., Garcia, M. & Schneider, J.A. Surface effects in field-assisted sintering. Journal of Materials Research 16, 286–292 (2001). https://doi.org/10.1557/JMR.2001.0043
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DOI: https://doi.org/10.1557/JMR.2001.0043