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Title: The Manufacturing of High Porosity Iron with an Ultra-Fine Microstructure via Free Pressureless Spark Plasma Sintering

Journal Article · · Materials
DOI:https://doi.org/10.3390/ma9060495· OSTI ID:1306381

High porosity (>40 vol %) iron specimens with micro- and nanoscale isotropic pores were fabricated by carrying out free pressureless spark plasma sintering (FPSPS) of submicron hollow Fe–N powders at 750 °C. Ultra-fine porous microstructures are obtained by imposing high heating rates during the preparation process. This specially designed approach not only avoids the extra procedures of adding and removing space holders during the formation of porous structures, but also triggers the continued phase transitions of the Fe–N system at relatively lower processing temperatures. In conclusion, the compressive strength and energy absorption characteristics of the FPSPS processed specimens are examined here to be correspondingly improved as a result of the refined microstructure.

Research Organization:
San Diego State Univ., CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC); Materials Sciences Division
Grant/Contract Number:
SC0008581
OSTI ID:
1306381
Journal Information:
Materials, Vol. 9, Issue 6; ISSN 1996-1944
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 16 works
Citation information provided by
Web of Science

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Cited By (2)

Processing metal powders via field assisted sintering technology (FAST): a critical review journal June 2019
Fabrication of Porous Materials by Spark Plasma Sintering: A Review journal February 2019