Effect of irreversible structural relaxation on the electrochemical behavior of Fe78−xSi13B9Cr(x=3,4,7) amorphous alloys

Marzo, F.F.

doi:10.1016/j.jnoncrysol.2003.08.022

Cited by 36 publications

(14 citation statements)

References 20 publications

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“…The corrosion rate of FeNiB metallic glass is only 70 μm/year in 3.5 wt% NaCl solution [73], while the corrosion rate increases to 130,000 μm/year in 1 M HNO 3 solution, near two thousand times larger than that in sodium chloride solution, as shown in Table 5. In Table 5, it is attained that more negative corrosion potential is obtained with increase of pH value, and the corrosion current density decreases.…”

Section: Effects Of Service Environmentmentioning

confidence: 93%

“…It indicates that the lacier morphologies for devitrified SAM 1651 mean the degradation in the corrosion resistance. However, the abrupt increase in the corrosion potential for crystalline alloy is attributed to the decrease of the residual stress during densification, and the surface atom electrochemically active site [73]. Since atom at a glassy metal surface are in nonequilibrium configuration and may effectively sit on higher energy wells than that corresponding to atoms on an equilibrium configuration.…”

Section: Effects Of Microstructure Homogeneitymentioning

confidence: 99%

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Corrosion Resistance and Electrocatalytic Properties of Metallic Glasses

Wang¹

2016

Metallic Glasses - Formation and Properties

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Metallic glasses exhibit excellent corrosion resistance and electrocatalytic properties, and present extensive potential applications as anticorrosion, antiwearing, and catalysis materials in many industries. The effects of minor alloying element, microstructure, and service environment on the corrosion resistance, pitting corrosion, and electrocatalytic efficiency of metallic glasses are reviewed. Some scarcities in corrosion behaviors, pitting mechanism, and eletrocatalytic reactive activity for hydrogen are discussed. It is hoped that the overview is beneficial for some researcher paying attention to metallic glasses.

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Section: Effects Of Service Environmentmentioning

confidence: 93%

Section: Effects Of Microstructure Homogeneitymentioning

confidence: 99%

Corrosion Resistance and Electrocatalytic Properties of Metallic Glasses

Wang¹

2016

Metallic Glasses - Formation and Properties

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“…In comparison with the as-cast sample, the Curie temperature increases and ÁH endo value decreases for the samples annealed at 573 and 773 K, implying that the glassy structure of the annealed samples tends to evolve towards to more stable glassy structure. 20,21) The thermal stability parameters of the as-cast and relaxed samples are tabulated in Table 1. The annealing at 973 K caused full crystallization, as evidenced from the DSC curve without exothermic peaks ( Fig.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Behaviour of [(Fe0.6Co0.4)0.75B0.2Si0.05]96Nb4 Bulk Glassy Alloy in Sulphuric Acid Solutions

et al. 2006

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The influence of structural changes such as structural relaxation and crystallization on the corrosion behavior of the [(Fe 0:6 -Co 0:4 ) 0:75 B 0:2 Si 0:05 ] 96 Nb 4 bulk glassy alloy has been investigated in aerated 0.1 and 0.5 kmol/m 3 sulphuric acid solutions. All tests were carried out with the same materials in different states: as-cast and relaxed glassy and crystalline states. It was found that the multicomponent [(Fe 0:6 Co 0:4 ) 0:75 B 0:2 Si 0:05 ] 96 Nb 4 glassy alloy had an ability to passivation in aerated sulphuric acid solutions irrespective of microstructure. The subsequent complete crystallization of the bulk glassy alloy leads to a significant decrease in corrosion resistance, while appropriate structural relaxation results in an increase in corrosion resistance. The corrosion results were discussed and correlated with the evolution of crystallization processes by means of XRD and DSC. The effect of temperature of the corrosive medium on the corrosion behavior of the as-cast [(Fe 0:6 Co 0:4 ) 0:75 B 0:2 Si 0:05 ] 96 Nb 4 glassy alloy has also been analyzed.

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“…Changes in TSRO are irreversible and connected with the decreases in the volume and redistribution of free volumes. 23 As a result, the average distance between the atoms decreases and this, in turn, causes an increase in the atomic packing density.…”

Section: Discussionmentioning

confidence: 99%

Influence of structural defects on the magnetic properties of massive amorphous Fe60Co10Mo2WxY8B20-x (x = 1, 2) alloys produced with the injection casting method

Gondro¹,

Błoch²,

Nabiałek³

et al. 2016

Mater. Tehnol.

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This paper presents the results of research pertaining to high-field magnetic properties, in relation to the theory of H. Kronmüller. Studies were performed on bulk amorphous alloys featuring composition Fe60Co10Mo2WxY8B20-x (x = 1, 2). Samples were produced in the form of plates with a thickness of 0.5 mm; they were prepared by injecting the molten alloy into a water-cooled copper mould. The influence of structural defects on the magnetization process was investigated within high magnetic fields known as the area of the approach to ferromagnetic saturation. For the investigated samples, the studies showed that, in the process of magnetization in high magnetic fields, rotation of the magnetization vector was mainly due to the presence of linear defects in the structure, i.e., quasidislocational dipoles. The density of quasidislocational dipoles in a sample with an addition of 1 % W was nearly twice as high as that of an alternative alloy. Keywords: bulk amorphous alloy, metallic glasses, high magnetic fields, magnetization, structural defects, relaxation lanek predstavlja rezultate raziskav, ki se nana{ajo na visokomagnetne lastnosti, v povezavi s teorijo H. Kronmüllerja. [tudije so bile izvedene na masivni amorfni zlitini s sestavo Fe60Co10Mo2WxY8B20-x (x = 1, 2). Vzorci so bili izdelani v obliki plo{~ic debeline 0,5 mm, izdelane z vbrizgavanjem staljene zlitine v vodno hlajeno bakreno kokilo. Preiskovan je bil vpliv napak v strukturi na proces magnetizacije v visokomagnetnih poljih, poznanih kot podro~je pribli`ka k feromagnetnemu nasi~enju. Za preiskovane vzorce so raziskave pokazale, da pri procesu magnetizacije v visoko magnetnih poljih pride do rotacije magnetnega vektorja predvsem zaradi prisotnosti linearnih napak v strukturi: to so kvazidislokacijski dipoli. Gostota dislokacijskih dipolov v vzorcu, z dodatkom 1 % W, je bila skoraj dvakrat vi{ja kot pa pri drugi zlitini. Klju~ne besede: masivna amorfna zlitina, kovinska stekla, visokomagnetno polje, magnetizacija, napake v strukturi, relaksacija

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Effect of irreversible structural relaxation on the electrochemical behavior of Fe78−xSi13B9Cr(x=3,4,7) amorphous alloys

Cited by 36 publications

References 20 publications

Corrosion Resistance and Electrocatalytic Properties of Metallic Glasses

Corrosion Resistance and Electrocatalytic Properties of Metallic Glasses

Corrosion Behaviour of [(Fe<SUB>0.6</SUB>Co<SUB>0.4</SUB>)<SUB>0.75</SUB>B<SUB>0.2</SUB>Si<SUB>0.05</SUB>]<SUB>96</SUB>Nb<SUB>4</SUB> Bulk Glassy Alloy in Sulphuric Acid Solutions

Influence of structural defects on the magnetic properties of massive amorphous Fe60Co10Mo2WxY8B20-x (x = 1, 2) alloys produced with the injection casting method

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