Evaluation of atomic layer deposited alumina as a protective layer for domestic silver articles: Anti-corrosion test in artificial sweat

Suk Won Park, Gwon Deok Han, Hyung Jong Choi, Fritz B. Prinz, Joon Hyung Shim

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This study evaluated the effectiveness of alumina fabricated by atomic layer deposition (ALD) as a protective coating for silver articles against the corrosion caused by body contact. An artificial sweat solution was used to simulate body contact. ALD alumina layers of varying thicknesses ranging from 20 to 80 nm were deposited on sputtered silver samples. The stability of the protective layer was evaluated by immersing the coated samples in the artificial sweat solution at 25 and 35 °C for 24 h. We confirmed that a sufficiently thick layer of ALD alumina is effective in protecting the shape and light reflectance of the underlying silver, whereas the uncoated bare silver is severely degraded by the artificial sweat solution. Inductively coupled plasma mass spectrometry and X-ray photoelectron spectroscopy were used for in-depth analyses of the chemical stability of the ALD-coated silver samples after immersion in the sweat solution.

Original languageEnglish
Pages (from-to)718-723
Number of pages6
JournalApplied Surface Science
Volume441
DOIs
Publication statusPublished - 2018 May 31

Keywords

  • Alumina
  • Anti-corrosion
  • Artificial sweat
  • Atomic layer deposition
  • Silver

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

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