Ion beam sputter coating in combination with sol-gel dip coating of Al alloy tube inner walls for corrosion and biological protection

Ayata S., Ensinger W.

SURFACE & COATINGS TECHNOLOGY, vol.340, pp.121-125, 2018 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 340
  • Publication Date: 2018
  • Doi Number: 10.1016/j.surfcoat.2018.02.065
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.121-125
  • Keywords: Ion beam sputter coating, Tube coating, Diamond-like carbon, Corrosion, DIAMOND-LIKE CARBON, RAMAN-SPECTROSCOPY, FILMS, DEPOSITION, APPARATUS
  • Dokuz Eylül University Affiliated: Yes


Aluminium alloy AlCuMg is an alloy with high mechanical strength and fracture toughness, but it suffers from poor corrosion resistance and friction behaviour. With a combined process of sol-gel deposition of zirconium oxide and a top coating of diamond-like carbon formed by ion beam sputtering with a movable conical sputter target inside the tube, the inner walls of AlMgCu tubes were homogeneously coated with a duplex coating with high resistance against corrosion in chloride solution. When Ag was added to the carbon sputter target, a DLC coating that contained Ag was obtained. Microbial tests showed that the coating is effective against pathogenic E. coif bacteria.