A novel route for processing cobalt-chromium-molybdenum orthopaedic alloys

Bhairav Patel, Fawad Inam, Michael Reece, Mohan Edirisinghe, William Bonfield, Jie Huang, Arash Angadji

Research output: Contribution to journalArticlepeer-review


Spark plasma sintering has been used for the first time to prepare the ASTM F75 cobalt–chromium–molybdenum (Co–Cr–Mo) orthopaedic alloy composition using nanopowders. In the preliminary work presented in this report, the effect of processing variables on the structural features of the alloy (phases present, grain size and microstructure) has been investigated. Specimens of greater than 99.5 per cent theoretical density were obtained. Carbide phases were not detected in the microstructure but oxides were present. However, harder materials with finer grains were produced, compared with the commonly used cast/wrought processing methods, probably because of the presence of oxides in the microstructure.
Original languageEnglish
Pages (from-to)1641-1645
JournalJournal of the Royal Society Interface
Issue number52
Early online date3 Mar 2010
Publication statusPublished - 6 Nov 2010


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