Electrochemical behavior of passive films on Al–17Si–14Mg (wt.%) alloy in near-neutral solutions

Coral-Escobar, E. E.; Pech‐Canul, M. A.

doi:10.1007/s10008-009-0853-y

Cited by 15 publications

(4 citation statements)

References 47 publications

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“…Semiconductor properties of the passive film of aluminum or aluminum alloys have been widely reported [32][33][34][35][36][37], and the relevant results indicate that the passive film of aluminum or aluminum alloys presents either n-type [32,[34][35][36] or p-type property [33] depending on the environmental conditions. In order to reveal the effect of Ce content on the semiconductor properties of passive film, the Mott-Schottky curves are measured.…”

Section: Semiconductor Properties Of Passive Filmsmentioning

confidence: 99%

Influence of cerium content on the corrosion behavior of Al-Co-Ce amorphous alloys in 0.6 M NaCl solution

Zhang

et al. 2019

Journal of Materials Science & Technology

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The effect of cerium content on the corrosion behavior of Al-Co-Ce amorphous alloys in 0.6 M NaCl solution was investigated by cyclic polarization, Mott-Schottky and X-ray photoelectron spectroscopy techniques. Results indicated that the open circuit potential of Al-Co-Ce amorphous alloys displayed a decreased tendency with the increase in Ce content, and the amorphous alloy with 4 at.% Ce presented both the lowest passive current density and donor density indicating the best corrosion resistance, while adding excess Ce led to the reduced corrosion resistance of Al-Co-Ce alloys. Furthermore, it was found that a low Ce content is beneficial to the formation of a more protective passive film on Al-Co-Ce amorphous alloys, and the corrosion inhibition reactions of Al-Co-Ce alloys in 0.6 M NaCl solution were changed with the increase in Ce content and the detailed reasons were discussed.

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Section: Semiconductor Properties Of Passive Filmsmentioning

confidence: 99%

Influence of cerium content on the corrosion behavior of Al-Co-Ce amorphous alloys in 0.6 M NaCl solution

Zhang

et al. 2019

Journal of Materials Science & Technology

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“…9b) consist of strong intensity peaks at about 103.6 eV corresponding to SiO 2 , and a very weak peak at 100.2 eV originating from a non-stoichiometric silicon oxide (SiO x ). 34 This suggests the Si species are predominantly in the form of SiO 2 with very small amounts of SiO x . The Al 2p spectra (Fig.…”

Section: X-ray Photoelectron Spectroscopy Analysismentioning

confidence: 99%

A critical role for Al in regulating the corrosion resistance of nanocrystalline Mo(Si_1−xAl_x)₂films

Lai

Xie

et al. 2012

J. Mater. Chem.

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Novel nanocrystalline Mo(Si 1Àx Al x ) 2 films, with differing Al contents were synthesized by double cathode glow discharge. The films exhibited a compact columnar microstructure having a pronounced (111) preferred orientation. The corrosion behaviour of these films were characterized by using various electrochemical techniques including open circuit potential (OCP), potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS) in 3.5 wt% NaCl solution. The corrosion resistance of the films increased with increasing Al content in the as-synthesized films. The composition and chemical state of the passive layers formed on the films were investigated by X-ray photoelectron spectroscopy (XPS). It was demonstrated that the passive layer formed on the binary MoSi 2 film was highly enriched in SiO 2 with minor amounts of MoO 4 2À , MoO 2 and SiO x . With the increase of Al content in the films, Al 2 O 3 was generated and incorporated into the passive layers, enhancing the corrosion resistance of the films by inhibiting the dissolution of Mo. Built upon the experimental results, the first-principles density-functional theory was applied to calculate the inter-atomic bonding strength in Mo(Si 1Àx Al x ) 2 and elucidate the role of Al in controlling the corrosion resistance of the films. The new findings lay a solid basis for the development and application of MoSi 2 based corrosion-resistant films.

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“…X-ray photoelectron spectroscopy (XPS) analysis of potentiostatically formed passive film on the alloy showed that it consisted of aluminum oxyhydroxide with incorporation of silicon in its elemental and two oxidized states (+3 and +4). Mott-Schottky analysis showed that trivalent silicon ion acted as an n-type dopant in the film (Coral-Escobar et. al., 2010).…”

Section: Corrosion Behaviormentioning

confidence: 99%

Recent Trends in Processing and Degradation of Aluminium Alloys

Ahmad¹

2011

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Professor Dr. Zaki Ahmad worked at King Fahd University of Petroleum and Minerals for thirty years in rendered distinguished services in teaching and research. He obtained his PhD from LEEDS University, UK. He is a chartered metallurgical engineer (C.Eng) from engineering council UK. He is a fellow of the institute of Materials, Minerals and Mining(FIMMM). He is a member European federation of corrosion and a fellow of institute of Metal Finishing. He substantially contributed to the founding activities in material science, corrosion engineering and nanotechnology at KFUPM and in Iran. He worked on international projects on aluminum with Aluminum, Ranshofen, Austria and Forschungzentrum, Geethscht, Germany and with Metallgesselscheft, Germany. He worked on international projects with Ministry of Technology, Germany. He is a founder contributor of center of excellence in corrosion at KFUPM, Dhahran, Saudi Arabia. He worked on the foundation and development of nanotechnology in Saudi Arabia in 2004. He is the author of "Principles of Corrosion Engineering and Corrosion Control" published by Elsevier in 2006. He has written over 95 research papers and international journals and over forty papers in international research conferences. His research activities include development of Al/SC alloys, Nanostructured superhydrophrobic surfaces, Nanocoatings and self-healing techniques. He was nominated for best researcher award in the Middle East by Energy Exchange in 2011. He is a consultant of several research organizations.

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Electrochemical behavior of passive films on Al–17Si–14Mg (wt.%) alloy in near-neutral solutions

Cited by 15 publications

References 47 publications

Influence of cerium content on the corrosion behavior of Al-Co-Ce amorphous alloys in 0.6 M NaCl solution

Influence of cerium content on the corrosion behavior of Al-Co-Ce amorphous alloys in 0.6 M NaCl solution

A critical role for Al in regulating the corrosion resistance of nanocrystalline Mo(Si_1−xAl_x)₂films

Recent Trends in Processing and Degradation of Aluminium Alloys

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Electrochemical behavior of passive films on Al–17Si–14Mg (wt.%) alloy in near-neutral solutions

Cited by 15 publications

References 47 publications

Influence of cerium content on the corrosion behavior of Al-Co-Ce amorphous alloys in 0.6 M NaCl solution

Influence of cerium content on the corrosion behavior of Al-Co-Ce amorphous alloys in 0.6 M NaCl solution

A critical role for Al in regulating the corrosion resistance of nanocrystalline Mo(Si1−xAlx)2films

Recent Trends in Processing and Degradation of Aluminium Alloys

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A critical role for Al in regulating the corrosion resistance of nanocrystalline Mo(Si_1−xAl_x)₂films