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Correlation between...
Correlation between pitting susceptibility and surface acidity, point of zero charge of passive film on aluminum: Influence of alloying elements
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- Chen, Dihao (author)
- KTH,Yt- och korrosionsvetenskap,Beijing Advanced Innovation Center for Materials Genome Engineering, Key Laboratory for Corrosion and Protection (MOE), Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, PR China
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- Li, Menglin (author)
- Beijing Advanced Innovation Center for Materials Genome Engineering, Key Laboratory for Corrosion and Protection (MOE), Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, PR China; State Grid Smart Grid Research Institute Co., Ltd., State Key Laboratory of Advanced Power Transmission Technology, Beijing 102211, China
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- Yue, Xiaoqi (author)
- KTH,Yt- och korrosionsvetenskap
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- Ji, Yucheng (author)
- Beijing Advanced Innovation Center for Materials Genome Engineering, Key Laboratory for Corrosion and Protection (MOE), Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, PR China
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- Xu, Yongtao (author)
- National Engineering & Technology Research Center for Non-Ferrous Metals Composites GRINM Group Corporation Limited, Beijing 101407, PR China
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- Pan, Jinshan, 1962- (author)
- KTH,Yt- och korrosionsvetenskap
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- Dong, Chaofang (author)
- Beijing Advanced Innovation Center for Materials Genome Engineering, Key Laboratory for Corrosion and Protection (MOE), Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, PR China
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(creator_code:org_t)
- Elsevier BV, 2024
- 2024
- English.
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In: Corrosion Science. - : Elsevier BV. - 0010-938X .- 1879-0496. ; 227
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The pitting potential, intrinsic surface acidity, point of zero charge of passive film on Al are studied using first-principles calculations to establish their relationships. Influences of alloying elements Zn, Cr, Nb, Si, Mo and Sc on adsorption of NH3 and NaCl, pHpzc of Al2O3 and pitting susceptibility of Al are investigated. The efficiency for enhancing pitting resistance of Al is evaluated, yielding the ratios Si: Zn: Cr: Mo: Nb: Sc = 1.8: − 0.3: 1: 1.9: 1.4: 0.2. A model for the dependence of pitting potential on the concentration of alloying elements in Al alloy matrix is developed, based on effects of alloying elements on the surface charge of passive film. The effects of Sc on pitting potential and pHpzc of Al oxide are predicted based on the calculated results, which are supported by electrochemical measurement, XPS analysis and contact angle titration.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Tribologi (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Tribology (hsv//eng)
Keyword
- First-principles calculations
- Passive film
- Pitting potential
- Point of zero charge
- Surface acidity
Publication and Content Type
- ref (subject category)
- art (subject category)
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