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

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

doi:10.1098/rsif.2010.0036

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

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

Mechanical and Construction Engineering Department

Research output: Contribution to journal › Article › peer-review

Abstract

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 language	English
Pages (from-to)	1641-1645
Journal	Journal of the Royal Society Interface
Volume	7
Issue number	52
Early online date	3 Mar 2010
DOIs	https://doi.org/10.1098/rsif.2010.0036
Publication status	Published - 6 Nov 2010

Keywords

processing
biomedical
metallic
orthopaedics

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10.1098/rsif.2010.0036

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abstract = "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.",

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AU - Patel, Bhairav

AU - Inam, Fawad

AU - Reece, Michael

AU - Edirisinghe, Mohan

AU - Bonfield, William

AU - Huang, Jie

AU - Angadji, Arash

PY - 2010/11/6

Y1 - 2010/11/6

N2 - 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.

AB - 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.

KW - processing

KW - biomedical

KW - metallic

KW - orthopaedics

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DO - 10.1098/rsif.2010.0036

M3 - Article

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EP - 1645

JO - Journal of the Royal Society Interface

JF - Journal of the Royal Society Interface

IS - 52

ER -

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

Abstract

Keywords

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