In situ growth process and corrosion resistance of a layered double‐hydroxide film on an LA103Z magnesium–lithium alloy

Zhang, Jumei; Duan, Xin; Hou, Anrong; Li, Jiacheng; Lian, Duoduo; Zhang, Mengchun; Wang, Bo

doi:10.1002/maco.202113022

Cited by 11 publications

(4 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the results, the 𝐼 𝑐𝑜𝑟𝑟 values of bare AZ91 and three steam coatings can be ranged in decreasing order: bare AZ91 > 150 ℃+3 h > 150 ℃+6 h >150 ℃+9 h. The Icorr values of steam coatings decreased by 3-4 orders of magnitude relative to the bare AZ91, and the Ecorr values slightly moved in the positive direction. The lower the Icorr value and the greater the Ecorr value is, the better the corrosion resistance of the coating gets [9]. The results showed that the corrosion resistance of AZ91 alloy can be improved significantly by the steam coatings.…”

Section: Resultsmentioning

confidence: 95%

A simple approach to fabricate protective coatings on the surface of AZ91 alloy and its corrosion resistance

Wang¹,

Zuo²,

Bai³

et al. 2023

Vib. proced.

Self Cite

View full text Add to dashboard Cite

In this paper, the corrosion resistant coatings were fabricated on AZ91 Mg alloy by steam treatment using deionized water as a steam source. The treatment temperature was maintained at 150 ℃, while the treatment time was varied at 3, 6 and 9 h. The results showed that relatively dense steam coating can be formed on the surface of AZ91 alloy by steam treatment for 3-9 h, and the phase structure of steam coating was mainly composed of Mg(OH)2 and contained AlO(OH) and Mg-Al LDH. With the extension of the steam treatment time, the better the corrosion resistance of the steam coating, and the corrosion current density was as low as 10-7~10-8 A·cm-2, which was 3-4 orders of magnitude lower than AZ91 Mg alloy substrate (~10-4 A·cm-2).

show abstract

Section: Resultsmentioning

confidence: 95%

A simple approach to fabricate protective coatings on the surface of AZ91 alloy and its corrosion resistance

Wang¹,

Zuo²,

Bai³

et al. 2023

Vib. proced.

Self Cite

View full text Add to dashboard Cite

show abstract

“…1,2 They have been seen as ideal materials for aerospace industries, medical equipments, and other fields. 3 Unfortunately, the active chemical properties conduce to poor corrosion resistance, which extremely hinders their development and application. 4,5 At present, it is the most cost-effective approach to prepare a protective film on the surface of magnesium alloys for improving its corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

“…As the lightest structural material, magnesium–lithium (Mg–Li) alloys have a series of excellent properties such as low density, high specific strength, good electromagnetic shielding, and other excellent comprehensive performance 1,2 . They have been seen as ideal materials for aerospace industries, medical equipments, and other fields 3 . Unfortunately, the active chemical properties conduce to poor corrosion resistance, which extremely hinders their development and application 4,5 .…”

Section: Introductionmentioning

confidence: 99%

Enhanced corrosion resistance of layered double hydroxides/steam coating composite coating prepared by the hydrothermal method on LA43M magnesium–lithium alloy substrates

Zhang

Hou

et al. 2023

Int J Applied Ceramic Tech

Self Cite

View full text Add to dashboard Cite

An excellent anticorrosion Mg–Al layered double hydroxide (LDH) composite coating was successfully fabricated on LA43M magnesium alloy substrates via an in situ steam coating (SC) process and a subsequent hydrothermal treatment at different temperatures. The microstructure, composition and phase formation of the composite coatings were studied via X‐ray diffractometer, energy disperse spectroscopy, and scanning electron microscope, respectively. The corrosion resistance of composite coatings was further investigated using electrochemical measurements and corrosion test. The results showed that LDH/SC composite coating has typical nanosheets microstructure, which effectively seal the defects of SC. As the hydrothermal temperature increases, the thickness and density of nanosheets increases, and the corrosion resistance was significantly improved. Especially, the Mg–Al LDH/SC composite coating prepared at 100°C was the most dense and thickness, and exhibited the optimal and long‐term anticorrosion resistance in 3.5 wt.% NaCl soultion. It has the lowest Icorr (1.767 × 10−8 A/cm2), which decreased by three and two orders of magnitude compared with the bare substrate and SC. Furthermore, it can maintain good chemical stability after immersion in the corrosion medium for 192 h and its hydrogen evolution rate (0.00416 mL·cm−2·h−1) and weight lost rate (0.00266 mg·cm−2·h−1) were the lowest compared with other samples.

show abstract

“…[4][5][6] It was found that LDH can be applied in metal corrosion protection due to its interlayer anion exchangeable, physical barrier, and self-healing properties. [7][8][9] Huang et al [10] gained MgAl-LDH films on AZ31 substrates by hydrothermal method and then modified with sodium laurate (SL) and sodium dodecyl benzene sulfonate (SDBS). The experimental results suggested that the modified films could effectively improve the long-term corrosion resistance of magnesium alloys.…”

Section: Introductionmentioning

confidence: 99%

Effect of different anion intercalations on the corrosion resistance of layered double hydroxides on the surface of LA43M

Zhang,

Lian,

et al. 2023

Materials & Corrosion

Self Cite

View full text Add to dashboard Cite

Layered double hydroxides (LDH) are widely used in the field of Mg alloy surface protection due to their interlayer anion exchangeable and physical barrier. To explore the effect of corrosion inhibitor modification on the growth and corrosion resistance of LDH coating, MgAl‐NO3−‐LDH precursor film was obtained on the surface of LA43M alloy by in situ growth method, and then MgAl‐V2O74−‐LDH, MgAl−Cl−‐LDH and MgAl‐ASP‐LDH were prepared by the ion exchange method. The morphology, composition, and corrosion resistance of the LDH film with different anion intercalation were studied systematically by scanning electron microscope, energy disperse spectroscopy, X‐ray diffractometer, Fourier‐transform infrared spectroscopy, and electrochemical tests. The results show that the modified LDH nanosheets are larger in size and uniformly tightly bonded to the substrate, and the thickness of the film is increased. Electrochemical tests and hydrogen precipitation experiments demonstrated that all four LDH films provided protection to the substrate, and the corrosion resistance of the V2O74−, Cl− and ASP‐containing films modified by corrosion inhibitors was improved compared with that of the precursor films, among which the MgAl‐V2O74−‐LDH had the best corrosion resistance.

show abstract

In situ growth process and corrosion resistance of a layered double‐hydroxide film on an LA103Z magnesium–lithium alloy

Cited by 11 publications

References 29 publications

A simple approach to fabricate protective coatings on the surface of AZ91 alloy and its corrosion resistance

A simple approach to fabricate protective coatings on the surface of AZ91 alloy and its corrosion resistance

Enhanced corrosion resistance of layered double hydroxides/steam coating composite coating prepared by the hydrothermal method on LA43M magnesium–lithium alloy substrates

Effect of different anion intercalations on the corrosion resistance of layered double hydroxides on the surface of LA43M

Contact Info

Product

Resources

About