Corrosion resistant metallic glasses for biosensing applications

Sagasti, Ariane; Lopes, Ana Catarina; Lasheras, Andoni; Palomares, Verónica; Carrizo, J.; Gutiérrez, J.; Barandiarán, J.M.

doi:10.1063/1.4994108

Cited by 18 publications

(8 citation statements)

References 19 publications

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“…As expected, the most corrosion resistant alloy is also the one with the lowest corrosion rate ( 73 0 5 10 12 , = 0). This is fully justified by the measured high corrosion potential and low current density determined from our measurements [18,33].…”

Section: Discussionsupporting

confidence: 69%

“…It has been already reported by several authors that the addition of certain elements, such as Cr [15,16] or Mo [17] substantially increases the corrosion resistance of the metallic alloys. In fact, in one of our previous works we observed how the addition of Cr improves the corrosion resistance of these type of magnetoelastic alloys [18]. Bearing this in mind, 5% of Cr was included in our sample's composition.…”

Section: Introductionmentioning

confidence: 91%

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Magnetic, Magnetoelastic and Corrosion Resistant Properties of (Fe–Ni)-Based Metallic Glasses for Structural Health Monitoring Applications

et al. 2019

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We have performed a study of the magnetic, magnetoelastic, and corrosion resistance properties of seven different composition magnetoelastic-resonant platforms. For some applications, such as structural health monitoring, these materials must have not only good magnetomechanical properties, but also a high corrosion resistance. In the fabricated metallic glasses of composition 73− 5 10 12 , the Fe/Ni ratio was varied (Fe + Ni = 73% at. ) thus changing the magnetic and magnetoelastic properties. A small amount of chromium (Cr 5 ) was added in order to achieve the desired good corrosion resistance. As expected, all the studied properties change with the composition of the samples. Alloys containing a higher amount of Ni than Fe do not show magnetic behavior at room temperature, while iron-rich alloys have demonstrated not only good magnetic properties, but also good magnetoelastic ones, with magnetoelastic coupling coefficient as high as 0.41 for = 0 in the 73 0 5 10 12 (the sample containing only Fe but not Ni ). Concerning corrosion resistance, we have found a continuous degradation of these properties as the Ni content increases in the composition. Thus, the corrosion potential decreases monotonously from 46.74 mV for the = 0, composition 73 0 5 10 12 to −239.47 mV for the = 73, composition 0 73 5 10 12 .

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Section: Discussionsupporting

confidence: 69%

Section: Introductionmentioning

confidence: 91%

Magnetic, Magnetoelastic and Corrosion Resistant Properties of (Fe–Ni)-Based Metallic Glasses for Structural Health Monitoring Applications

et al. 2019

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“…Structural glasses, especially bulk metallic glasses (BMG), and supercooled liquids are in the shortlist of objects for study in modern chemistry and material science [1][2][3][4][5][6][7][8][9]. The reason is twofold: firstly, glasses have unique properties useful in industry, such as, corrosion resistance [10,11], high specific strength [1], good thermoplastic formability [12], excellent bio compatibility [13] and, secondly, many aspects of structural glass formation still need an explanation [1,2,14]. Classical molecular dynamics (MD) has become the main theoretical tool that allows investigating properties of supercooled liquids and glasses which are hardly available in experiments.…”

Section: Introductionmentioning

confidence: 99%

Nucleation instability in supercooled Cu–Zr–Al glass-forming liquids

Ryltsev

Klumov

Chtchelkatchev

et al. 2018

The Journal of Chemical Physics

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Special role in computer simulations of supercooled liquid and glasses is played by few general models representing certain classes of real glass-forming systems. Recently, it was shown that one of the most widely used model glassformers -Kob-Andersen binary Lennard-Jones mixture -crystalizes in quite lengthy molecular dynamics simulations and, moreover, it is in fact a very poor glassformer at large system sizes. Thus, our understanding of crystallization stability of model glassformers is far from complete due to the fact that relatively small system sizes and short timescales have been considered so far. Here we address this issue for two embedded atom models intensively used last years in numerical studies of Cu-Zr-(Al) bulk metallic glasses. We consider Cu64.5Zr35.5 and Cu46Zr46Al8 alloys as those having high glass-forming ability. Exploring their structural evolution at continuous cooling and isothermal annealing, we observe that both systems nucleate in sufficiently lengthy simulations, though Cu46Zr46Al8 demonstrate order of magnitude higher critical nucleation time. Moreover, Cu64.5Zr35.5 is actually unstable to crystallization for large system sizes (N > 20, 000). Both systems crystallize with the formation of tetrahedrally close packed Laves phases of different types. We reveal that structure of both systems in liquid and glassy state contains comparable amount of polytetrahedral clusters. We argue that nucleation instability of simulated Cu64.5Zr35.5 alloy is due to the fact that its composition is very close to that for stable Cu2Zr compound with C15 Laves phase structure. arXiv:1809.00198v1 [cond-mat.mtrl-sci] 1 Sep 2018

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“…Metglas ® 2826MB3 (Fe 37 Ni 42 Mo 4 B 17 , see [15]), was chosen for the experiments. It is a commercial material often used in magnetoelastic sensor applications due to its good magnetic and magnetoelastic properties, and resistance to corrosion [16,17]. Room-temperature hysteresis loops of the material were measured by a classical induction method, obtaining a saturation magnetization μ 0 M S = 0.88 T and initial susceptibility χ = 15,000.…”

Section: Methodsmentioning

confidence: 99%

Size Dependence of the Magnetoelastic Properties of Metallic Glasses for Actuation Applications

Sagasti

Gutiérrez

Lasheras

et al. 2019

Sensors

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We present an exhaustive study of the magnetoelastic properties of 24 strips with different rectangular dimensions, cut from a long ribbon of Metglas® 2826MB3. The strips have a length-to-width ratio R = L/w ranging from 2 to over 20. Significant variations of the apparent saturation Young’s modulus and the ΔE effect with strip geometry, changing from 160 GPa and 4% for L = 10 mm, w = 5 mm and R = 2, to 164 GPa and 9.6% for L = 35 mm, w = 1.7 mm and R = 20.6, have been observed. In order to obtain the highest values of the ΔE effect, the magnetomechanical coupling coefficient, k, and the quality factor of the resonance, Q, a value R > 14 is needed. The effective anisotropy field Hk*, taken as the minimum of the E(H) curve, and its width ΔH, are not as strongly influenced by the R value, and a value of R > 7 is enough to reach the lowest value. From our measurements we infer that the formerly predicted value of R > 5 needed for a good magnetic and magnetoelastic response of the material must be actually regarded as the lowest limit for this parameter. In fact, we show that the demagnetizing factor N, rather than the length-to-width ratio R, is the parameter that governs the magnetoelastic performance of these strips.

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Corrosion resistant metallic glasses for biosensing applications

Cited by 18 publications

References 19 publications

Magnetic, Magnetoelastic and Corrosion Resistant Properties of (Fe–Ni)-Based Metallic Glasses for Structural Health Monitoring Applications

Magnetic, Magnetoelastic and Corrosion Resistant Properties of (Fe–Ni)-Based Metallic Glasses for Structural Health Monitoring Applications

Nucleation instability in supercooled Cu–Zr–Al glass-forming liquids

Size Dependence of the Magnetoelastic Properties of Metallic Glasses for Actuation Applications

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