A mechanism assessment for the anti-corrosion of zirconia coating under the condition of subcritical water corrosion

Cao, Guoqin; Yun, Yifan; Xu, Hongjie; Yuan, Gaihuan; Hu, Junhua; Shao, Guosheng

doi:10.1016/j.corsci.2019.03.009

Cited by 40 publications

(4 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The isotherms exhibit a sharp N 2 uptake at low relative pressures and a hysteresis loop in the region of high relative pressure, which correspond to the microporosity of the samples and the interspace between stacked MOF particles, respectively. In addition, BA-ZrBTB and ZrBTB possess the Brunauer–Emmett–Teller (BET) surface areas of 490 and 310 m 2 g –1 , respectively; these findings agree well with the characteristics of BA-ZrBTB and ZrBTB. , 1 H NMR spectra of digested MOF powders were used to confirm the amount of benzoate grafting on each hexazirconium cluster of BA-ZrBTB and the removal of benzoate after the acidic treatment of BA-ZrBTB. As shown in Figure d, three sets of peaks located at 7.3, 7.4, and 7.7 ppm originating from benzoic acid, and a peak at 7.85 ppm corresponding to 15 protons of the H 3 BTB linker, can be observed in the 1 H NMR spectrum of digested BA-ZrBTB.…”

Section: Resultssupporting

confidence: 62%

Two-Dimensional Metal–Organic Frameworks/Epoxy Composite Coatings with Superior O₂/H₂O Resistance for Anticorrosion Applications

Hsia,

Chen,

Tai

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Corrosion protection technology plays a crucial role in preserving infrastructure, ensuring safety and reliability, and promoting longterm sustainability. In this study, we combined experiments and various analyses to investigate the mechanism of corrosion occurring on the epoxy-based anticorrosive coating containing the additive of two-dimensional (2D) and water-stable zirconium-based metal−organic frameworks (Zr-MOFs). By using benzoic acid as the modulator for the growth of the MOF, a 2D MOF constructed from hexazirconium clusters and BTB linkers (BTB = 1,3,5-tri(4carboxyphenyl)benzene) with coordinated benzoate (BA-ZrBTB) can be synthesized. By coating the BA-ZrBTB/epoxy composite film (BA-ZrBTB/ EP) on the surface of cold-rolled steel (CRS), we found the lowest coating roughness (RMS) of BA-ZrBTB/EP is 2.83 nm with the highest water contact angle as 99.8°, which represents the hydrophobic coating surface. Notably, the corrosion rate of the BA-ZrBTB/EP coating is 2.28 × 10 −3 mpy, which is 4 orders of magnitude lower than that of the CRS substrate. Moreover, the energy barrier for oxygen diffusion through BA-ZrBTB/EP coating is larger than that for epoxy coating (EP), indicating improved oxygen resistance for adding 2D Zr-MOFs as the additive. These results underscore the high efficiency and potential of BA-ZrBTB as a highly promising agent for corrosion prevention in various commercial applications. Furthermore, this study represents the first instance of applying 2D Zr-MOF materials in anticorrosion applications, opening up new possibilities for advanced corrosion-resistant coatings.

show abstract

Section: Resultssupporting

confidence: 62%

Two-Dimensional Metal–Organic Frameworks/Epoxy Composite Coatings with Superior O₂/H₂O Resistance for Anticorrosion Applications

Hsia,

Chen,

Tai

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…By comparing electron untrapping energies in literature presented by Couet et al and the C4 model [50], it is the diffusivity of V •• O which is rate limiting, which we expect to outweigh any electronic effects. Further, it has been shown that oxygen vacancies are favourable for the stabilisation of the tetragonal ZrO 2 phase [52], thus we may expect the proportion of tetragonal to monoclinic ZrO 2 to be higher in samples containing greater amounts of Fe, Ni and Cr.…”

Section: Discussionmentioning

confidence: 99%

Understanding the role of Fe, Cr and Ni in Zircaloy-2 with special focus on the role of Ni on hydrogen pickup

Than

Grimes

Bell

et al. 2020

Journal of Nuclear Materials

View full text Add to dashboard Cite

“…Usually, the corrosion (oxidation) takes place on the surface of Zr alloys in a high-temperature aqueous environment [34]. Therefore, it is believed that the corrosion of Zr alloys results from the diffusion of oxygen in oxide films toward the substrate.…”

Section: Model and Calculation Methodsmentioning

confidence: 99%

Calculation of Oxygen Diffusion Coefficients in Oxide Films Formed on Low-Temperature Annealed Zr Alloys and Their Related Corrosion Behavior

Zhang

Chen

Zhao³

et al. 2019

Metals

View full text Add to dashboard Cite

The growth of oxide film, which results from the inward oxygen diffusion from a corrosive environment, is a critical consideration for the corrosion resistance of zirconium alloys. This work calculates the oxygen diffusion coefficients in the oxide films formed on zirconium alloys annealed at 400~500 °C and investigates the related corrosion behavior. The annealed samples have a close size for the second-phase particles but a distinctive hardness, indicating the difference in substrate conditions. The weight gain of all samples highly follows parabolic laws. The weight gain of the sample annealed at 400 °C has the fastest increase rate at the very beginning of the corrosion test, but its oxide film has the slowest growth rate as the corrosion proceeds. By contrast, the sample annealed at 500 °C shows the lowest weight gain but the highest corrosion rate constant. Such a corrosion behavior is attributed to the amount of defects existing in the oxide film formed on the annealed samples; fewer defects would provide a lower fraction of short-circuit diffusion in total diffusion, resulting in a lower diffusion coefficient of oxygen in the oxide film, thereby producing better corrosion resistance. This is consistent with the calculated diffusion coefficients of oxygen in the oxide films: 3.252 × 10−11 cm2/s, 3.464 × 10−11 cm2/s and 3.740 × 10−11 cm2/s for the samples annealed at 400 °C, 450 °C, and 500 °C, respectively.

show abstract

A mechanism assessment for the anti-corrosion of zirconia coating under the condition of subcritical water corrosion

Cited by 40 publications

References 30 publications

Two-Dimensional Metal–Organic Frameworks/Epoxy Composite Coatings with Superior O₂/H₂O Resistance for Anticorrosion Applications

Two-Dimensional Metal–Organic Frameworks/Epoxy Composite Coatings with Superior O₂/H₂O Resistance for Anticorrosion Applications

Understanding the role of Fe, Cr and Ni in Zircaloy-2 with special focus on the role of Ni on hydrogen pickup

Calculation of Oxygen Diffusion Coefficients in Oxide Films Formed on Low-Temperature Annealed Zr Alloys and Their Related Corrosion Behavior

Contact Info

Product

Resources

About

A mechanism assessment for the anti-corrosion of zirconia coating under the condition of subcritical water corrosion

Cited by 40 publications

References 30 publications

Two-Dimensional Metal–Organic Frameworks/Epoxy Composite Coatings with Superior O2/H2O Resistance for Anticorrosion Applications

Two-Dimensional Metal–Organic Frameworks/Epoxy Composite Coatings with Superior O2/H2O Resistance for Anticorrosion Applications

Understanding the role of Fe, Cr and Ni in Zircaloy-2 with special focus on the role of Ni on hydrogen pickup

Calculation of Oxygen Diffusion Coefficients in Oxide Films Formed on Low-Temperature Annealed Zr Alloys and Their Related Corrosion Behavior

Contact Info

Product

Resources

About

Two-Dimensional Metal–Organic Frameworks/Epoxy Composite Coatings with Superior O₂/H₂O Resistance for Anticorrosion Applications

Two-Dimensional Metal–Organic Frameworks/Epoxy Composite Coatings with Superior O₂/H₂O Resistance for Anticorrosion Applications