Corrosion Resistance and Electrocatalytic Properties of Metallic Glasses

Wang, Shanlin

doi:10.5772/63677

Cited by 11 publications

(11 citation statements)

References 125 publications

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“…This amorphous structure is usually accompanied by a chemical homogeneity that, if including the proper elements, gives excellent corrosion properties to the amorphous material. This is the case of our Fe − Ni − Cr containing metallic glasses [12,15,34].…”

Section: Discussionmentioning

confidence: 69%

“…This is a homogeneous single phase arisen from the extremely rapid cooling rates necessary to form the glassy state. So, there are no grain boundaries nor dislocations that provide an initial site for corrosion [12,34]. This amorphous structure is usually accompanied by a chemical homogeneity that, if including the proper elements, gives excellent corrosion properties to the amorphous material.…”

Section: Discussionmentioning

confidence: 99%

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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: Discussionmentioning

confidence: 69%

Section: Discussionmentioning

confidence: 99%

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

et al. 2019

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“…In order to obtain the local Avrami exponent (n(α)) under nonisothermal crystallization kinetic analysis by using JMAK method, the plots of ln(−ln(1−α)) vs. 1000/T α are needed and then the n(α) can be obtained by using Equation (8). For instance, the plots of ln(−ln(1−α)) vs. 1000/T α for all four crystallization stages of (Fe 41 Co 7 Cr 15 Mo 14 Y 2 C 15 B 6 ) 100−0.25 Cu 0.25 amorphous alloy in different heating rates are indicated in Figure 6.…”

Section: Avrami Exponent and The Rate Constantmentioning

confidence: 99%

“…In recent years, many attempts have been made to generate new amorphous alloys and bulk metallic glasses (BMGs) with better properties and performance [ 1 , 2 , 3 ]. These efforts have led to the design and development of advanced BMGs with special properties such as high strength and hardness [ 4 , 5 , 6 , 7 ], relatively good corrosion resistance [ 8 , 9 , 10 ] and excellent magnetic properties [ 11 , 12 , 13 ]. Today, these materials play an important role in technological innovation because of wide range of their applications [ 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Isokinetic Analysis of Fe41Co7Cr15Mo14Y2C15B6 Bulk Metallic Glass: Effect of Minor Copper Addition

et al. 2020

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In the present study, (Fe41Co7Cr15Mo14Y2C15B6)100−xCux (x = 0, 0.25 and 0.5 at.%) amorphous alloys were prepared by copper-mold casting. To clarify the effect of the minor addition of copper on the mechanism of nucleation and growth during the crystallization process, an isokinetic analysis was performed. The activation energies (E) of the various crystallization stages were calculated by using theoretical models including Kissinger–Akahira–Sunose (KAS), Flynn–Wall–Ozawa (FWO), Augis–Bennett and Gao–Wang methods. In addition, Augis–Bennett, Gao–Wang and Matusita methods were used to investigate the nucleation and growth mechanisms and to determine other kinetic parameters including Avrami exponent (n), the rate constant (Kp) and dimensionality of growth (m). The obtained results revealed that the activation energy—as well as thermal stability—was changed with minor addition of copper. In addition, the obtained Avrami exponent values were confirmed by Johnson–Mehl–Avrami–Kolmogorov (JMAK) method. The research findings demonstrated that the value of Avrami exponent is changed with minor addition of copper, so that the Avrami exponents of all crystallization stages, except the second peak for copper-free amorphous alloy, were equal to integer values ranging from two to four, indicating that the growth mechanisms were controlled by interface. Moreover, the kinetic parameters of n and b for all peaks were increased by an increase in crystallization temperature, which can be attributed to the increase in the nucleation rate.

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“…6 It has been argued that this is due to the absence of imperfections such as grain boundaries, dislocations, and chemical precipitates and segregations. 7 Also, their unique supercooled liquid region between the glass transition temperature (T g ) and the crystallization temperature (T x ) provides an opportunity for thermal plastic formation for industrial applications. 8 The width of the supercooled liquid region, ΔT = T x − T g , has been shown to correlate with the glass forming ability of metallic glass.…”

Section: ■ Introductionmentioning

confidence: 99%

Fast Screening of Corrosion Trends in Metallic Glasses

Liu

Sun

et al. 2019

ACS Comb. Sci.

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Corrosion trends in the bulk metallic glass forming alloy system Zr–Cu–Al are studied through a fast screening visual characterization method of thin film alloy libraries prepared by magnetron co-sputtering. Significant distinct brightness changes are present within the Zr–Cu–Al system when the thin film library is immersed in 3.5 wt % NaCl. Through additional quantification of corrosion current density, a correlation between change in brightness and corrosion current density is revealed, suggesting an effective rapid screening of corrosion simply by a visual method. For materials discovery with optimized multiproperties, we utilize the corrosion fast screening results and superimpose them on the composition dependence of the glass forming ability. This allows us to rapidly identify alloys with the best combination of glass forming ability and corrosion resistance, which we then confirm in bulk form.

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Corrosion Resistance and Electrocatalytic Properties of Metallic Glasses

Cited by 11 publications

References 125 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

Isokinetic Analysis of Fe41Co7Cr15Mo14Y2C15B6 Bulk Metallic Glass: Effect of Minor Copper Addition

Fast Screening of Corrosion Trends in Metallic Glasses

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