Synthesizing of Nanostructured Fe-Mn Alloys by Mechanical Alloying Process

Safaie, Naghmeh; Khakbiz, Mehrdad; Sheibani, S.; Bagha, Pedram Sotoudeh

doi:10.1016/j.mspro.2015.11.134

Cited by 16 publications

(8 citation statements)

References 11 publications

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“…However, a contribution can still be observed in the presence of α-martensite, which shows a ferromagnetic behaviour [119][120][121]. The accelerated degradation of Fe-Mn alloys with different Mn content in relation to pure iron has been confirmed in many studies [38,69,89,114,[122][123][124][125].…”

Section: Iron-manganese Alloysmentioning

confidence: 98%

Biodegradable Iron-Based Materials—What Was Done and What More Can Be Done?

2021

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Iron, while attracting less attention than magnesium and zinc, is still one of the best candidates for biodegradable metal stents thanks its biocompatibility, great elastic moduli and high strength. Due to the low corrosion rate, and thus slow biodegradation, iron stents have still not been put into use. While these problems have still not been fully resolved, many studies have been published that propose different approaches to the issues. This brief overview report summarises the latest developments in the field of biodegradable iron-based stents and presents some techniques that can accelerate their biocorrosion rate. Basic data related to iron metabolism and its biocompatibility, the mechanism of the corrosion process, as well as a critical look at the rate of degradation of iron-based systems obtained by several different methods are included. All this illustrates as the title says, what was done within the topic of biodegradable iron-based materials and what more can be done.

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Section: Iron-manganese Alloysmentioning

confidence: 98%

Biodegradable Iron-Based Materials—What Was Done and What More Can Be Done?

2021

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“…Moreover, this structure can provide both high strength and ductility, which are desirable for stent applications. Mechanical alloying is a method to produce fine grain biodegradable Fe-based [22] and Zn-based [23] metals. Srinivasarao et al [24] produced a bimodal structure of ferrite steel composed of fine grains (<100 nm) and micrometer grains via mechanical alloying and Spark Plasma Sintering (SPS) process.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Design and characterization of nano and bimodal structured biodegradable Fe-Mn-Ag alloy with accelerated corrosion rate

Bagha

Khakbiz

Sheibani

et al. 2018

Journal of Alloys and Compounds

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Researchers in biodegradable metals have been putting efforts to accelerate the corrosion of ironbased biodegradable metals. These include by alloying iron with manganese and noble elements such as silver, but further increase to the corrosion rate is still needed. In this study, a set of bimodal nano/microstructured Fe-30Mn-1Ag alloys was prepared through mechanical alloying and spark plasma sintering. The alloys were characterized and tested for their corrosion behavior in Hanks' solution at 37 o C and for their mechanical properties. The bimodal-structured alloy possessed a mixture of austenitic (γ-FeMn) and ferritic (α-Fe) phases, while the nano-and macro-structured ones were essentially composed of γ-FeMn and α-Fe phases, respectively. Addition of 1-3 wt.% of silver into the nanostructured alloy increased its corrosion rate from 0.24 mm/year to 0.33 and 0.58 mm/year for Fe-30Mn-1Ag and Fe-30Mn-3Ag, respectively. Whilst, the bimodal Fe-30Mn-1Ag alloy corroded at a higher rate of 0.88 mm/year. This alloy also possessed an interesting combination of high and low micro-hardness phases that contributed to high shear strength of 417 MPa and shear strain of 0.66. Detailed discussion on the relationship of microstructure with corrosion behavior and mechanical properties is presented in this manuscript.

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“…milling time. As in our previous study [22], 10 h milling time was chosen for preparing other powder mixtures for subsequent sintering. The fully austenitic phase was maintained for all three alloys after being sintered at 1000 o C for 1 h (Fig.…”

Section: Cytotoxicity Testmentioning

confidence: 99%

Novel antibacterial biodegradable Fe-Mn-Ag alloys produced by mechanical alloying

Sotoudehbagha

Sheibani

Khakbiz

et al. 2018

Materials Science and Engineering: C

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Various compositions and synthesis methods of biodegradable iron-based alloys have been studied aiming for the use of temporary medical implants. However, none is focused on nano-structured alloy and on adding antibacterial property to the alloy. In this study, new Fe-30Mn-(1-3)Ag alloys were synthesized by means of mechanical alloying and assessed for their microstructure, mechanical properties, corrosion rate, antibacterial activity and cytotoxicity. Results showed that the alloy with 3 wt% Ag content displayed the highest relative density, shear strength, micro hardness and corrosion rate. However, optimum cytotoxicity and the antibacterial activity were reached by the alloy with 1 wt% Ag content. The compositional and processing effects of the alloys' properties are further discussed in this work.

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Synthesizing of Nanostructured Fe-Mn Alloys by Mechanical Alloying Process

Cited by 16 publications

References 11 publications

Biodegradable Iron-Based Materials—What Was Done and What More Can Be Done?

Biodegradable Iron-Based Materials—What Was Done and What More Can Be Done?

Design and characterization of nano and bimodal structured biodegradable Fe-Mn-Ag alloy with accelerated corrosion rate

Novel antibacterial biodegradable Fe-Mn-Ag alloys produced by mechanical alloying

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