scholarly journals Influence of substrate composition on corrosion protection of sol–gel thin films on magnesium alloys in 0.6M NaCl aqueous solution

2014 ◽  
Vol 77 (11) ◽  
pp. 1642-1652 ◽  
Author(s):  
A.A. El-Hadad ◽  
V. Barranco ◽  
A. Samaniego ◽  
I. Llorente ◽  
F.R. García-Galván ◽  
...  
Keyword(s):  
Thin Films ◽  
Aqueous Solution ◽  
Magnesium Alloys ◽  
Corrosion Protection ◽  
Sol Gel ◽  
Substrate Composition ◽  
Influence Of Substrate

Effect of Water on the IR Properties of Mg2+ Intercalated Electrochromic Nb2O5 Thin Films

2006 ◽  
Vol 972 ◽  
Author(s):  
Gargi Agarwal ◽  
G B Reddy
Keyword(s):  
Thin Films ◽  
Aqueous Solution ◽  
Water Content ◽  
Current Density ◽  
Sol Gel ◽  
Constant Current ◽  
Cyclic Stability ◽  
Constant Current Density ◽  
Effect Of Water ◽  
Ftir Studies

AbstractSol-gel derived Nb2O5 thin films were intercalated with Mg2+,using the non-aqueous solution of Mg(ClO4)2 in propylene carbonate (pc) as the electrolyte. 2% and 4% ( volume %) water was added to the electrolyte to study the effect of water on the electrochromic properties of Nb2O5. This paper presents the changes in optical and structural properties of the intercalated films with and without water in the electrolyte. The ratio (x) of the Mg2+ and Nb atoms has been controlled by optimizing the intercalation duration under a constant current density. The fall in transmittance on intercalation (for x= 0.8) increased by 15% with 4% water in the electrolyte, compared to the film intercalated without water. FTIR studies show that water is incorporated in the films on intercalation and small quantities of Mg(OH)2 and Nb-OH are formed along with Mg-O-Nb bonds. The presence of water in electrolyte decreases water content in the films and enhances the formation of Mg(OH)2, Mg-O-Nb and Nb-OH bonds. The recovery of Mg2+ on deintercalation is slightly reduced in presence of water in the electrolyte. The cyclic stability of the films intercalated without water is more than that of the films intercalated in presence of water.

Glass-like CexOy sol–gel coatings for corrosion protection of aluminium and magnesium alloys

2011 ◽  
Vol 206 (2-3) ◽  
pp. 257-264 ◽  
Author(s):  
N.C. Rosero-Navarro ◽  
M. Curioni ◽  
Y. Castro ◽  
M. Aparicio ◽  
G.E. Thompson ◽  
...  
Keyword(s):  
Magnesium Alloys ◽  
Corrosion Protection ◽  
Sol Gel

Recent Advancements in Corrosion Protection of Magnesium Alloys by Silane-Based Sol–Gel Coatings

2020 ◽  
Vol 59 (45) ◽  
pp. 19840-19857
Author(s):  
Mohd Talha ◽  
Yucong Ma ◽  
Mingjie Xu ◽  
Qi Wang ◽  
Yuanhua Lin ◽  
...  
Keyword(s):  
Magnesium Alloys ◽  
Corrosion Protection ◽  
Sol Gel

scholarly journals Sol-gel thin films for corrosion protection

1995 ◽  
Vol 21 (6) ◽  
pp. 403-406 ◽  
Author(s):  
Mohamed Atik ◽  
Pedro de Lima Neto ◽  
Luiz A. Avaca ◽  
Michel A. Aegerter
Keyword(s):  
Thin Films ◽  
Corrosion Protection ◽  
Sol Gel

Spontaneous formation of mono-n-butyl phosphate and mono-n-hexyl phosphate thin films on the iron surface in aqueous solution and their corrosion protection property

RSC Advances ◽  
2015 ◽  
Vol 5 (67) ◽  
pp. 54420-54432 ◽  
Author(s):  
Caicai Zhao ◽  
Xiang Gao ◽  
Haifeng Lu ◽  
Ru Yan ◽  
Chuntao Wang ◽  
...  
Keyword(s):  
Thin Films ◽  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Corrosion Protection ◽  
Pure Iron ◽  
Iron Surface ◽  
Spontaneous Formation ◽  
Protection Property

Mono-n-butyl phosphate (BP) and mono-n-hexyl phosphate (HP) thin films were directly formed on an iron surface by immersing pure iron samples in aqueous solutions containing BP or HP.

Silica doped with lanthanum sol–gel thin films for corrosion protection

2012 ◽  
Vol 520 (16) ◽  
pp. 5267-5271 ◽  
Author(s):  
M. Abuín ◽  
A. Serrano ◽  
J. Llopis ◽  
M.A. García ◽  
N. Carmona
Keyword(s):  
Thin Films ◽  
Corrosion Protection ◽  
Sol Gel

Evaluation of Corrosion Protection of Sol-Gel Coatings on AZ31B Magnesium Alloy

2008 ◽  
Vol 587-588 ◽  
pp. 390-394 ◽  
Author(s):  
Alexandre Ferreira Galio ◽  
Sviatlana V. Lamaka ◽  
Mikhail L. Zheludkevich ◽  
L.F. Dick ◽  
Iduvirges Lourdes Müller ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Magnesium Alloys ◽  
Corrosion Protection ◽  
Electrochemical Impedance ◽  
Sol Gel ◽  
Weight Ratio ◽  
Hybrid Coatings ◽  
Magnesium Alloy Az31b ◽  
Excellent Adhesion ◽  
Sol Gel Films

Magnesium is one of the lightest metals and magnesium alloys have good strength to weight ratio making them very attractive for many particular applications [1]. The main drawback of magnesium alloys is their high corrosion susceptibility. Improving the corrosion protection by deposition of thin hybrid films can expand the areas of applications of relatively cheap magnesium alloys. This work aims at investigation of new anticorrosion coating systems for magnesium alloy AZ31B using hybrid sol-gel films. The sol-gels were prepared by copolymerization of 3- glycidoxypropyltrimethoxysilane (GPTMS), titanium alcoxides and special additives which provide corrosion protection of magnesium alloy. Different compositions of sol-gel systems show enhanced long-term corrosion protection of magnesium alloy. The sol-gel coatings exhibit excellent adhesion to the substrate and protect against the corrosion attack. Corrosion behavior of AZ31B substrates pre-treated with sol–gel derived hybrid coatings was tested by Electrochemical Impedance Spectroscopy (EIS). The morphology and the structure of sol-gel films under study were characterized with SEM/EDS techniques.

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