An abnormal correlation between electron work function and corrosion resistance in Ti-Zr-Be-(Ni/Fe) metallic glasses

Gu, Jia-Lun; Shao, Yang; Bu, Hengtong; Jia, Jingchun; Yao, Kefu

doi:10.1016/j.corsci.2019.108392

Cited by 37 publications

(5 citation statements)

References 62 publications

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“…As shown in Figure 8b, the smaller ϕm of the 10T sample leads to a smaller φB and according to the PDM theory as shown in Figure 8c, a smaller φB accelerates the formation of passive film to increase protection and corrosion resistance (Figure 8a). The tendency is in agreement with the results of Gu et al who have observed that a smaller ϕ of Ti-based metallic glass gives rise to superior corrosion resistance stemming from the more protective passive film [65].…”

Section: Influence Of Grain Refinement On the Passive Layersupporting

confidence: 93%

A more defective substrate leads to a less defective passive layer: Enhancing the mechanical strength, corrosion resistance and anti-inflammatory response of the low-modulus Ti-45Nb alloy by grain refinement

Xie

Liao

et al. 2021

Acta Biomaterialia

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Section: Influence Of Grain Refinement On the Passive Layersupporting

confidence: 93%

A more defective substrate leads to a less defective passive layer: Enhancing the mechanical strength, corrosion resistance and anti-inflammatory response of the low-modulus Ti-45Nb alloy by grain refinement

Xie

Liao

et al. 2021

Acta Biomaterialia

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“…Despite the tests being carried out in an ambient atmosphere, the sliding path was not characterized by the presence of metal oxides or degradation of graphene oxide flakes, which could be due to the removal of structural water from the sliding path 60 , 61 . Literature indicates that materials with low relative work function, identified as active, anodic or having unsaturated terminal bonds tend to be electron transfer sites 62 – 64 resulting in stiction and adhesion, in contrast to inert or passive phases that by virtue of higher work-function, or, bond saturation resist such interactions, effectively resulting in lower friction during sliding 65 – 71 . The SKP data after the sliding experiments is shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

MXene/graphene oxide nanocomposites for friction and wear reduction of rough steel surfaces

Ayyagari

Shevchenko

Berman

2023

Sci Rep

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Development of solid lubricant materials that render reliable performance in ambient conditions, are amenable to industrial size and design complexities, and work on engineered surfaces is reported. These coatings are composed of Ti3C2Tx-Graphene Oxide blends, spray-coated onto bearing steel surfaces. The tribological assessment was carried out in ambient environmental conditions and high contact pressures in a ball-on-disc experimental set-up. The evaluation yielded that the use of Ti3C2Tx-Graphene-Oxide coatings led to substantial reduction in friction down to 0.065 (at 1 GPa contact pressure and 100 mm/s) in comparison to the uncoated of single-component-coated surfaces, surpassing the state-of-the-art. The coatings also provided excellent protection against wear loss of the substrate and counter-face. The results were explained based on the observations from Raman spectroscopy, scanning electron microscopy, transmission electron microscopy, and nanoindentation measurements. In operando formation of a dense, hard and stiff, dangling-bond-saturated tribolayer was observed to be the reason for the sustained lubricity even at high test loads and sliding speeds. This report presents the holistic exploration and correlation of structure-property-processing pertaining to the advancement of solid lubrication science.

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“…The greater the resistance of diffusion and transfer, the stronger the surface resistance to dissolution or chemical reaction, and the better the corrosion resistance. 24,25 Conclusions 1. The microstructure of FeCoCrNiTi x high entropy alloy consists of many plate-like structures, the dendrites are face-centered cubic solid solution, and the interdendrites are composed of rich (Ni,Ti) and rich (Cr,Fe) phases.…”

Section: Resultsmentioning

confidence: 99%

Effect of Ti content on Magnetic and Electrochemical Corrosion Properties of FeCoCrNi High Entropy Alloys

Li¹,

Lei²,

Wu³

et al. 2021

ECS J. Solid State Sci. Technol.

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FeCoCrNiTiX (X = 0.5,0.75,1) series high entropy alloys with different contents were prepared by vacuum arc melting method. The effects of Ti content on the magnetic properties and electrochemical corrosion properties of FeCoCrNi high entropy alloys were studied by SEM, XRD, VSM, hardness tester and other methods. The experimental results show that the face-centered cubic structure composed of many plate-like structures between dendrites and interdendritic is found in the as-cast alloy of CoCrFeNiTix. With the further increase of Ti content, the volume fraction of Laves phase increases, and the morphology of Laves phase changes from granular to reticular structure. The hardness of the alloy increased with Ti content at x = 0.5 to x = 0.75, but decrease when Ti reached x = 1.Compared to FeCoCrNiTi0.5 and FeCoCrNiTi0.75 alloys, FeCoCrNiTi1 alloys has a wider hysteresis area, while FeCoCrNiTi0.75 alloys has the smallest hysteresis. When the content of Ti continues to increase to 1 at.%, the paramagnetism of FeCoCrNiTi weakens. The FeCoCrNiTi1 alloy presents the largest semicircle radius of the Nyquist curve and the highest diffusion impedance. With the increase of Ti element in the alloy, the diameter of the semicircular arc decreases at first and then increases, and FeCoCrNiTi1 has better corrosion resistance.

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An abnormal correlation between electron work function and corrosion resistance in Ti-Zr-Be-(Ni/Fe) metallic glasses

Cited by 37 publications

References 62 publications

A more defective substrate leads to a less defective passive layer: Enhancing the mechanical strength, corrosion resistance and anti-inflammatory response of the low-modulus Ti-45Nb alloy by grain refinement

A more defective substrate leads to a less defective passive layer: Enhancing the mechanical strength, corrosion resistance and anti-inflammatory response of the low-modulus Ti-45Nb alloy by grain refinement

MXene/graphene oxide nanocomposites for friction and wear reduction of rough steel surfaces

Effect of Ti content on Magnetic and Electrochemical Corrosion Properties of FeCoCrNi High Entropy Alloys

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