Please wait.'

Page is loading'


Home  > Raw materials & technologies  > Applications  > Protective & Marine coatings  > Corrosion behaviour analysed

Wednesday, 30 September 2020
pdf
Raw materials & technologies, Applications, Protective & Marine coatings

Corrosion behaviour analysed

Thursday, 19 August 2010

A new study presents the characterisation of a multi-layer sol-gel hybrid inorganic-organic coating system with a structure composed of an intermediate cerium inhibited layer deposited between twoun-doped layers on aluminium alloy.

Hybrid films prepared by the sol-gel method provide a good approach as protective layers on metallic surfaces Source: IFAM

Hybrid films prepared by the sol-gel method provide a good approach as protective layers on metallic surfaces Source: IFAM

The coating system usually employed for corrosion protection of metal substrates consists of different layers which can be constituted of a chemical conversion coating applied on the metal surface followed by a number of organic layers. Hybrid films prepared by the sol-gel method provide a good approach as protective layers on metallic surfaces, although it is necessary to combine the barrier functionality with an active protection mechanism to avoid corrosion when the coating is damaged. A new study presents the characterisation of a multi-layer sol-gel hybrid inorganic-organic coating system with a structure composed of an intermediate cerium inhibited layer deposited between two un-doped layers on AA2024 alloy. The comparison between the inhibited system and a bi-layer non-inhibited one has allowed to assess the migration of the cerium ions into the hybrid coating towards the substrate corresponding to the improvement of the corrosion properties. The combination of the physical barrier and the active protection enables to obtain an effective protective system. The paper will appear in "Progress in Organic Coatings", Vol. 69, issue 2, October 2010.

related links:

More information

top of page
Comments (0)
Add Comment

Post comment

You are not logged in

register