An investigation of the influence of physical vapour deposited aluminium layers on the kinetics of organic coating disbondment on iron

作者：Reynolds G J; Barrett Z S; McMurray H N; Williams G^*

来源：Corrosion Science, 2013, 70: 82-92.

DOI：10.1016/j.corsci.2013.01.015

• Iron
• Sputtered films
• Polymer coatings
• Oxygen reduction
• Atmospheric corrosion

A high-throughput method of investigating organic coating delamination from iron substrates incorporating interfacial thin metallic films of varying thickness is presented. Physical vapour deposited aluminium is demonstrated as a means of limiting underfilm oxygen reduction and slowing rates of corrosion-driven cathodic disbandment. A wedge of graded thickness is deposited on an iron surface and overcoated with a model organic layer. After initiating corrosion by applying corrosive electrolyte to a penetrative defect, rates of corrosion-driven delamination are determined by in situ scanning Kelvin probe measurements, enabling the influence of a range of Al thicknesses to be studied on a single sample.

• 出版日期2013-5