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Microstructural and mechanical characteristics of porous iron prepared by powder metallurgy
J. Capek, D. Vojtěch,
Jazyk angličtina Země Nizozemsko
Typ dokumentu časopisecké články, práce podpořená grantem
- MeSH
- mikroskopie elektronová rastrovací MeSH
- molekulární struktura MeSH
- poréznost MeSH
- prášky, zásypy, pudry * MeSH
- spektrometrie rentgenová emisní MeSH
- železo chemie MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
The demand for porous biodegradable load-bearing implants has been increasing recently. Based on investigations of biodegradable stents, porous iron may be a suitable material for such applications. In this study, we prepared porous iron samples with porosities of 34-51 vol.% by powder metallurgy using ammonium bicarbonate as a space-holder material. We studied sample microstructure (SEM-EDX and XRD), flexural and compressive behaviors (universal loading machine) and hardness HV5 (hardness tester) of the prepared samples. Sample porosity increased with the amount of spacer in the initial mixtures. Only the pore surfaces had insignificant oxidation and no other contamination was observed. Increasing porosity decreased the mechanical properties of the samples; although, the properties were still comparable with human bone and higher than those of porous non-metallic biomaterials and porous magnesium prepared in a similar way. Based on these results, powder metallurgy appears to be a suitable method for the preparation of porous iron for orthopedic applications.
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- $a 10.1016/j.msec.2014.06.046 $2 doi
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- $a Capek, Jaroslav $u Department of Metals and Corrosion Engineering, Institute of Chemical Technology in Prague, Technická 5, 166 28 Prague 6, Czech Republic. Electronic address: Jaroslav.Capek@vscht.cz.
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- $a Microstructural and mechanical characteristics of porous iron prepared by powder metallurgy / $c J. Capek, D. Vojtěch,
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- $a The demand for porous biodegradable load-bearing implants has been increasing recently. Based on investigations of biodegradable stents, porous iron may be a suitable material for such applications. In this study, we prepared porous iron samples with porosities of 34-51 vol.% by powder metallurgy using ammonium bicarbonate as a space-holder material. We studied sample microstructure (SEM-EDX and XRD), flexural and compressive behaviors (universal loading machine) and hardness HV5 (hardness tester) of the prepared samples. Sample porosity increased with the amount of spacer in the initial mixtures. Only the pore surfaces had insignificant oxidation and no other contamination was observed. Increasing porosity decreased the mechanical properties of the samples; although, the properties were still comparable with human bone and higher than those of porous non-metallic biomaterials and porous magnesium prepared in a similar way. Based on these results, powder metallurgy appears to be a suitable method for the preparation of porous iron for orthopedic applications.
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- $a Vojtěch, Dalibor $u Department of Metals and Corrosion Engineering, Institute of Chemical Technology in Prague, Technická 5, 166 28 Prague 6, Czech Republic.
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