Special Section Papers

Resistance Improvement of Aluminum Surface to Corrosion Through Reactions With Fluoride Ions

[+] Author and Article Information
Magal Saphier

Chemistry Department,
Nuclear Research Centre Negev,
P.O. Box 9001,
Beer-Sheva 84190, Israel
e-mail: magal_saphier@yahoo.com

Oron Zamir

Department of Nuclear Engineering,
Ben-Gurion University of the Negev,
Beer-Sheva 8410501, Israel;
Chemistry Department,
Nuclear Research Centre Negev,
P.O. Box 9001,
Beer-Sheva 84190, Israel
e-mail: oron_z1@walla.co.il

Polina Berzansky

Chemistry Department,
Ben-Gurion University of the Negev,
Beer-Sheva 8410501, Israel
e-mail: lilith479@gmail.com

Oshra Saphier

Department of Chemical Engineering,
Sami Shamoon College of Engineering,
Beer-Sheva 84100, Israel
e-mail: oshras@sce.ac.il

Dan Meyerstein

Chemical Sciences Department,
Ariel University,
Ariel 407000, Israel
e-mail: danmeyer@bgu.ac.il

Manuscript received June 12, 2016; final manuscript received March 28, 2017; published online May 25, 2017. Assoc. Editor: Ilan Yaar.

ASME J of Nuclear Rad Sci 3(3), 030914 (May 25, 2017) (3 pages) Paper No: NERS-16-1059; doi: 10.1115/1.4036432 History: Received June 12, 2016; Revised March 28, 2017

The reaction of fluoride ions with alumina was found to strongly depend on the concentration of fluoride ions in the aqueous solution. At low concentrations ([fluoride ions] < 0.1 mol/l in the case of potassium fluoride), the aqueous concentration of aluminum ions is relatively high as measured by using inductively coupled plasma optical emission spectroscopy (ICP-OES), and the aluminum oxide dissolves as a fluoride complex. At high concentrations of fluoride ([fluoride ions] > 0.5 mol/l in the case of potassium fluoride), a new structure is formed on the alumina surface involving fluoride, aluminum, potassium, and oxygen (in the case of potassium fluoride). The structure was characterized by using X-ray powder diffraction (XRD), scanning electron microscope (SEM), and energy-dispersive X-ray spectroscopy (EDS). The resulting structure improved the passivation of alumina, the solubility of aluminum ions decreasing compared to the untreated alumina. Aluminum surfaces that were fluoride-treated showed a better resistance to dissolution in both acidic and basic media.

Copyright © 2017 by ASME
Your Session has timed out. Please sign back in to continue.


Frank, W. B. , Haupin, W. E. , Vogt, H. , Bruno, M. , Thonstad, J. , Dawless, R. K. , Kvande, H. , and Taiwo, O. A. , 2009, “ Aluminum,” Ullmann's Encyclopedia of Industrial Chemistry, Wiley, New York.
Sindekar, R. L. , Chandler, G. T. , and Mickalonis, J. L. , 2010, “ Water Quality and Corrosion: Considerations for Nuclear Reactor,” J. S. C. Acad. Sci., 9(1), pp. 43–46.
Perryman, J. , 2007, “ Corrosion Resistance of Aluminum,” A CMI Technical White Paper, Crane Materials International, Atlanta, GA.
Plankey, B. J. , Patterson, H. H. , and Cronan, C. S. , 1986, “ Kinetics of Aluminum Fluoride Complexation in Acidic Water,” Environ. Sci. Technol., 20(2), pp. 160–165. [CrossRef] [PubMed]
Cotton, F. A. , Wilkinson, G. , Murillo, A. M. , and Bochmann, M. , 1999, Advanced Inorganic Chemistry, 6th ed., Wiley, New York, pp. 175–184. [PubMed] [PubMed]
Jourdan, A. , and Morel, B. , 2001, “ Recent Developments in Fluorine Chemistry for Microelectronic Applications: Some Examples at Comurhex,” J. Fluorine Chem., 107(2), pp. 255–264. [CrossRef]
Ku, Y. , and Chiou, H.-M. , 2002, “ The Adsorption of Fluoride Ion From Aqueous Solution by Activated Alumina,” Water, Air, Soil Pollut., 133(1), pp. 349–361. [CrossRef]


Grahic Jump Location
Fig. 1

Concentration of aluminum ions as a function of fluoride concentration in aqueous solution at pH 6.0, 1 g alumina in 30 ml potassium fluoride solution for 24 h

Grahic Jump Location
Fig. 2

EDS spectrum of fluoride-treated alumina

Grahic Jump Location
Fig. 3

SEM micrograph of (a) untreated alumina and (b) fluoride-treated alumina

Grahic Jump Location
Fig. 4

Aqueous concentration of aluminum ions at different pH values for fluoride-treated and untreated reference: (a) at pH 4, 6, 9 and (b) at pH 2, 12

Grahic Jump Location
Fig. 5

Comparison of aqueous concentrations of aluminum ions at different pH values, comparison of different salts for fluoride-treated and untreated reference

Grahic Jump Location
Fig. 6

Picture of aluminum stripes: (a) “fluoride-treated” and (b) untreated reference




Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In