Effect of divalent cations in Langmuir-Blodgett films on the protection of copper against corrosion

F. Al-Taher, J. Telegdi, E. Kálmán

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Langmuir-Blodgett films (LB) of hydroxamic amphiphiles were used as coating barriers on metal surface against corrosion. Two long-chain hydroxamic acids [CH3(CH2)16CONHOH] monolayers in the presence of some divalent cations (Ca2+, Mg2+, and Cu2+) have been studied at different pH of the subphase. The monolayer was characterized by surface pressure-area isotherms and visualized by Brewster angle microscope (BAM). Compact Langmuir layers were deposited on copper surface, where the modified surfaces were characterized by contact angle measurement as well as by electrochemical techniques. The morphology of LB coated copper surface was visualized by atomic force microscopy (AFM). The coated copper surfaces were tested in corrosive media at acidic and neutral pH. The results show that the multi-molecular LB films of hydroxamic acid salts form good barriers against copper corrosion. The comparison of these results with copper coated by LB layers without divalent cations shows that the presence of divalent cations in the subphase increases the copper corrosion inhibition. The octadecanoyl hydroxamic acid (C 18N) results in better and more stable monolayer with cations in the subphase.

Original languageEnglish
Title of host publicationMaterials Science Forum
Pages9-16
Number of pages8
Volume537-538
Publication statusPublished - 2007
Event5th Hungarian Conference on Materials Science, Testing and lnformatics - Balatonfured, Hungary
Duration: Oct 9 2005Oct 11 2005

Publication series

NameMaterials Science Forum
Volume537-538
ISSN (Print)02555476

Other

Other5th Hungarian Conference on Materials Science, Testing and lnformatics
CountryHungary
CityBalatonfured
Period10/9/0510/11/05

Fingerprint

Copper corrosion
Langmuir Blodgett films
Divalent Cations
Positive ions
Hydroxamic Acids
Copper
Monolayers
Acids
Caustics
Amphiphiles
Angle measurement
Contact angle
Isotherms
Cations
Atomic force microscopy
Microscopes
Salts
Metals
Corrosion
Coatings

Keywords

  • Atomic force microscopy
  • Divalent cations
  • Hydroxamic acid
  • Langmuir-Blodgett films
  • Nanocoating

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Al-Taher, F., Telegdi, J., & Kálmán, E. (2007). Effect of divalent cations in Langmuir-Blodgett films on the protection of copper against corrosion. In Materials Science Forum (Vol. 537-538, pp. 9-16). (Materials Science Forum; Vol. 537-538).

Effect of divalent cations in Langmuir-Blodgett films on the protection of copper against corrosion. / Al-Taher, F.; Telegdi, J.; Kálmán, E.

Materials Science Forum. Vol. 537-538 2007. p. 9-16 (Materials Science Forum; Vol. 537-538).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Al-Taher, F, Telegdi, J & Kálmán, E 2007, Effect of divalent cations in Langmuir-Blodgett films on the protection of copper against corrosion. in Materials Science Forum. vol. 537-538, Materials Science Forum, vol. 537-538, pp. 9-16, 5th Hungarian Conference on Materials Science, Testing and lnformatics, Balatonfured, Hungary, 10/9/05.
Al-Taher F, Telegdi J, Kálmán E. Effect of divalent cations in Langmuir-Blodgett films on the protection of copper against corrosion. In Materials Science Forum. Vol. 537-538. 2007. p. 9-16. (Materials Science Forum).
Al-Taher, F. ; Telegdi, J. ; Kálmán, E. / Effect of divalent cations in Langmuir-Blodgett films on the protection of copper against corrosion. Materials Science Forum. Vol. 537-538 2007. pp. 9-16 (Materials Science Forum).
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