Electrochemical corrosion properties of amorphous Fe78Si13B9 alloy

Szewieczek, D.; Baron, A. A.

doi:10.1016/j.jmatprotec.2004.09.069

Cited by 10 publications

(4 citation statements)

References 7 publications

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“…The boundaries are actually a discontinuous set of nanometer-scale pores that only appear as a continuous line at lower magnifications. Thus, the sample does not have continuous grain boundaries and can be expected to maintain superior corrosion resistance compared to a fully crystalline state [36][37][38][39][40][41][42]. The speckled appearance in the bulk of each grain corresponds to the nanocrystals formed during devitirifcation.…”

Section: Designing In Situ and Ex Situ Compositesmentioning

confidence: 99%

“…Fe-based metallic glasses and composites are of interest because they are less expensive than many other amorphous alloys [26], have yield strengths as high as 4 GPa [27,28], excellent magnetic properties [29][30][31][32][33][34], low coefficients of thermal expansion [35], excellent corrosion resistance [36][37][38][39][40][41][42], and can be used in a variety of applications [6,43,44]. Most Fe-based metallic glasses are based on an "80-20" rule, with approximately 80 at% metals (M) and 20 at% semimetals (S) and/or nonmetals (N), and is based on short range order that consists of distorted clusters with M:(N+S) ratios close to 80:20 [45].…”

Section: Introductionmentioning

confidence: 99%

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Designing in situ and ex situ bulk metallic glass composites via spark plasma sintering in the super cooled liquid state

et al. 2016

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Crystallization inhibits metallic glass forming in the super cooled liquid state and can be avoided if sufficiently fast heating rates can be obtained, but becomes increasingly difficult for marginal glass formers. We propose that dynamic pressing can enhance formability, and demonstrate that density of an iron-based marginal glass forming alloy (Fe 49.7 Cr 17.1 Mn 1.9 Mo 7.4 W 1.6 B 15.2 C 3.8 Si 2.4 ) can be enhanced by coupling loading rate to fast heating rate during spark plasma sintering. We also describe the transformation kinetics for devitrification in a time-temperature-crystallinity diagram. The combination of coupled loading/fast heating and the time-temperature-crystallinity diagram define the processing requirements for obtaining a dense X-ray amorphous structure and can also be used to design a wide variety of dense in situ composites. Finally, we demonstrate that the design approach also applies to ex situ composites by adding microcrystalline W or Ta, enabling systematic control of atomic-, nano-, and micro-structure. This multi-scale structure control of bulk metallic glass composites has implications for developing a fundamental understanding of structure-property relationships. We expect this general approach will be applicable to other bulk metallic glass composites, and especially beneficial for marginal glass formers that are otherwise difficult to process.

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Section: Designing In Situ and Ex Situ Compositesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Designing in situ and ex situ bulk metallic glass composites via spark plasma sintering in the super cooled liquid state

et al. 2016

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“…It must be noted that, in concentrated H 2 SO 4 solution, FeSiBNbCu MG exhibited deteriorated corrosion properties than that of the crystalline counterpart and materials (such as SS and Fe-Cr alloys) [197], because of the prompt development of the corrosion product layer ascribed to defects in the crystalline material. However, in dilute H 2 SO 4 solution, MGs possess superior corrosion properties ascribed to the rapid evolution of defect-free passive film [325]. Thus not only the type of solution is important in the passivation dynamics of Fe-based MG but also the concentration of the corrosive environment.…”

Section: Duration Of Immersionmentioning

confidence: 99%

Fe-based metallic glass coatings by thermal spraying: a focused review on corrosion properties and related degradation mechanisms

Nayak

Kumar

Laha

2022

International Materials Reviews

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Among various materials available for alleviating the corrosion-related degradation, thermal sprayed Fe-based metallic glass coatings (MGCs) have received huge attention from the scientific community due to the exceptional combination of mechanical and corrosion properties, along with commercially attractive low material cost of this particular alloy system. Emerging reports on the thermal sprayed Fe-based MGCs outperforming conventional corrosion-resistant materials and coatings have accelerated further exploration of this domain, resulting in an immense increase of research activities over the last few decades producing fascinating results. This review takes a holistic approach encompassing an in-depth assessment of all the relevant salient work till date, including corrosion properties, corresponding degradation mechanisms, metallurgical and environmental factors with reference to passive film dynamics and/or formation of corrosion products. Moreover, various strategies for improved corrosion properties and recent research progress have been reviewed with an attempt to identify the present knowledge gaps and the future research directions.

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“…In the Fe-Si binary system, amorphous phase formation has been reported in a wide composition range [5,6]. The addition of B, in the ternary Fe-Si-B system, is expected to extend the glass forming range [7][8][9][10][11][12]. In this study, the structural evolution of powders mixtures having nominal compositions Fe 75 Si 25 and Fe 75 Si 15 B 10 is studied during the MA process and subsequent heat treatment.…”

Section: Introductionmentioning

confidence: 99%

Effect of Boron on the Amorphization of Fe-Si Alloys by Mechanical Alloying

Urban

Cuevas

Montes

et al. 2012

MSF

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The amorphization process by mechanical alloying in the Fe-Si alloy system has been studied. High energy ball milling has been applied for alloys synthesis. X-ray diffraction (XRD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to monitor the structural and phase transformations through the different stages of milling. The addition of amorphous boron in the milling process and the increase of the milling time were used to improve the formation of the amorphous phase. Heating the samples resulted in the crystallization of the synthesized amorphous alloys and the appearance of equilibrium intermetallic compounds.

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Electrochemical corrosion properties of amorphous Fe78Si13B9 alloy

Cited by 10 publications

References 7 publications

Designing in situ and ex situ bulk metallic glass composites via spark plasma sintering in the super cooled liquid state

Designing in situ and ex situ bulk metallic glass composites via spark plasma sintering in the super cooled liquid state

Fe-based metallic glass coatings by thermal spraying: a focused review on corrosion properties and related degradation mechanisms

Effect of Boron on the Amorphization of Fe-Si Alloys by Mechanical Alloying

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