Cold Sintering of Iron Powdered Metal Compacts and Their Performance

Linsea Paradis, Ramakrishnan Rajagopalan, Austin Fairman, Kyle Robertson, Daudi R. Waryoba, Clive Randall

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


Iron powder metallurgy is a well-established field in the powder metal (PM) industry due to its ease of processing and appreciable mechanical properties. One area that can contribute significantly to increased production and warrants more study is green machining. Additionally, our current global environmental state calls for more energy efficient processing methods. Cold sintering process (CSP) of metals may provide a means for decreasing required sintering temperature for metal via liquid phase sintering. Our application of CSP utilizes surface modification of iron particles to form an ultrathin hydrated phosphate layer (~10 nm). The hydrated layer promotes driving force for rearrangement and densification under warm compaction to yield compacts with significantly increased green strength up to 70 MPa. This method is currently under investigation for the impact of alloyed iron as well. Implementation of CSP for iron may result in increased mechanical properties, decreased sintering temperature requirements, and decreased energy consumption.

Original languageEnglish (US)
Title of host publicationTMS 2022 151st Annual Meeting and Exhibition Supplemental Proceedings
PublisherSpringer Science and Business Media Deutschland GmbH
Number of pages7
ISBN (Print)9783030923808
StatePublished - 2022
Event151st Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2022 - Anaheim, United States
Duration: Feb 27 2022Mar 3 2022

Publication series

NameMinerals, Metals and Materials Series
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696


Conference151st Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2022
Country/TerritoryUnited States

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy Engineering and Power Technology
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry


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