Physical and mechanical properties of injection molded co-cr-mo alloy powder for orthopedic applications
Cobalt-chromium alloys are commonly used for surgical implants because of their high strength, superior corrosion resistance, non-magnetic behavior, and biocompatibility. Cobalt- Chromium-Molybdenum (Co-Cr-Mo) applications include prosthetic replacements of hips. This paper presents the attempt t...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Trans Tech Publications Ltd., Switzerland
2016
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/49243/ http://irep.iium.edu.my/49243/ http://irep.iium.edu.my/49243/ http://irep.iium.edu.my/49243/1/Physical_and_mechanical_properties_of_injection_molded_Co-Cr-Mo.pdf |
| Summary: | Cobalt-chromium alloys are commonly used for surgical implants because of their high
strength, superior corrosion resistance, non-magnetic behavior, and biocompatibility. Cobalt-
Chromium-Molybdenum (Co-Cr-Mo) applications include prosthetic replacements of hips. This
paper presents the attempt to produce metallic implant using Co-Cr-Mo powder by MIM process,
focusing on the effects of different heating rate during sintering process at 1380 oC. Co-Cr-Mo
powder was mixed homogeneously with palm oil based binder with powder loading of 65 vol% and
was injection molded using vertical injection molding machine with the nozzle temperature of 160
°C to produce green compacts. The binders were then removed by solvent extraction process and
sintered in vacuum condition at 10-5 mbar at 1380 °C. Results indicated that sintered density and
tensile strength varies from 8.1 g/cm3 to 8.2 g/cm3 and 546 MPa to 797 MPa respectively. The
mechanical properties comply with the international standard (ASTM F75). |
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