Novel Fe-Mn-Si-Pd alloys: insights on mechanical, magnetic, corrosion performance and biocompatibility
Feng, Yuping (Universitat Autònoma de Barcelona. Departament de Física)
Blanquer Jerez, Andreu (Universitat Autònoma de Barcelona. Departament de Biologia Cel·lular, de Fisiologia i d'Immunologia)
Fornell Beringues, Jordina (Universitat Autònoma de Barcelona. Departament de Física)
Zhang, Huiyan (Universitat Autònoma de Barcelona. Departament de Física)
Solsona Mateos, Pau (Universitat Autònoma de Barcelona. Departament de Física)
Baró, M. D.. (Universitat Autònoma de Barcelona. Departament de Física)
Suriñach, Santiago (Universitat Autònoma de Barcelona. Departament de Física)
Ibáñez, Elena (Universitat Autònoma de Barcelona. Departament de Biologia Cel·lular, de Fisiologia i d'Immunologia)
Barrios, Leonardo (Universitat Autònoma de Barcelona. Departament de Biologia Cel·lular, de Fisiologia i d'Immunologia)
Pellicer Vilà, Eva Maria (Universitat Autònoma de Barcelona. Departament de Física)
Nogués, C. (Carme) (Universitat Autònoma de Barcelona. Departament de Biologia Cel·lular, de Fisiologia i d'Immunologia)
Sort Viñas, Jordi (Universitat Autònoma de Barcelona. Departament de Física)

Date:	2016
Abstract:	Two new Fe-based alloys, Fe-10Mn6Si1Pd and Fe-30Mn6Si1Pd, have been fabricated by arc-melting followed by copper mold suction casting. The Fe-30Mn6Si1Pd alloy mainly consists of ε-martensite and γ-austenite Fe-rich phases whereas the Fe-10Mn6Si1Pd alloy primarily contains α-Fe(Mn)-ferrite phase. Additionally, Pd-rich precipitates were detected in both alloys. Good mechanical response was observed by nanoindentation: hardness values around 5. 6 GPa and 4. 2 GPa and reduced Young's modulus values of 125 GPa and 93 GPa were measured for the as-prepared Fe-10Mn6Si1Pd and Fe-30Mn6Si1Pd alloys, respectively. Both alloys are thus harder and exhibit lower Young's modulus than 316L stainless steel, which is one of the most common Fe-based reference materials for biomedical applications. Compared with the ferromagnetic Fe-10Mn6Si1Pd alloy, the paramagnetic Fe-30Mn6Si1Pd alloy is more appropriate to be used as an implant since it would be compatible with nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) analyses. Concerning biocompatibitliy, the more hydrophilic Fe-10Mn6Si1Pd shows improved cell adhesion but its pronounced ion leaching has a negative effect on the proliferation of cells. The influence of immersion in simulated body fluid on composition, microstructure, mechanical and magnetic properties of both alloys is assessed, and the correlation between microstructure evolution and physical properties is discussed.
Grants:	Ministerio de Economía y Competitividad MAT2014-57960-C3-1-R Ministerio de Economía y Competitividad MAT2014-57960-C3-2-R Ministerio de Economía y Competitividad MAT2014-57960-C3-3-R Ministerio de Economía y Competitividad RYC/2012/10839 Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-1015
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Published in:	Journal of materials chemistry B, Vol. 4 (2016) , p. 6402-6412, ISSN 2050-7518

DOI: 10.1039/C6TB01951J

Post-print 33 p, 2.9 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Group of Smart Nanoengineered Materials, Nanomechanics and Nanomagnetism (Gnm3)
Articles > Research articles
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