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Title: All-Materials-Inclusive Flash Spark Plasma Sintering

Journal Article · · Scientific Reports

A new flash (ultra-rapid) spark plasma sintering method applicable to various materials systems, regardless of their electrical resistivity, is developed. A number of powders ranging from metals to electrically insulative ceramics have been successfully densified resulting in homogeneous microstructures within sintering times of 8–35 s. A finite element simulation reveals that the developed method, providing an extraordinary fast and homogeneous heating concentrated in the sample’s volume and punches, is applicable to all the different samples tested. The utilized uniquely controllable flash phenomenon is enabled by the combination of the electric current concentration around the sample and the confinement of the heat generated in this area by the lateral thermal contact resistance. The presented new method allows: extending flash sintering to nearly all materials, controlling sample shape by an added graphite die, and an energy efficient mass production of small and intermediate size objects. This approach represents also a potential venue for future investigations of flash sintering of complex shapes.

Research Organization:
San Diego State Univ., CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0008581
OSTI ID:
1500042
Journal Information:
Scientific Reports, Vol. 7, Issue 1; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 70 works
Citation information provided by
Web of Science

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Cited By (5)

Controlling current flow in sintering: A facile method coupling flash with spark plasma sintering journal January 2020
Pressure‐enhanced densification of TaC ceramics during flash spark plasma sintering journal September 2018
Reactive, nonreactive, and flash spark plasma sintering of Al 2 O 3 /SiC composites—A comparative study journal August 2019
Energy efficient spark plasma sintering: Breaking the threshold of large dimension tooling energy consumption journal September 2018
Simultaneous Spark Plasma Sintering of Multiple Complex Shapes journal February 2019

Figures / Tables (5)


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