Abstract
Thin and very uniform silica–alumina films were deposited by dip-coating onto AISI-304 stainless steel and submitted to different heat treatments. They were prepared by simultaneous ultrasound-assisted hydrolysis and polycondensation of tetraethylorthosilicate and aluminium-sec-butylate or aluminium nitrate in an atmosphere rich in water vapour. The resulting materials were characterised by ellipsometry in order to optimise the process of avoiding porosity which was submitted to molecular probing. This method informs us of the micropore size distribution, using adsorptive different-sized molecules. The thickness ranges from 60 to 350 nm, depending on the sol processing and heat treatment. In some samples most of the micropores are only sensitive to molecular probe below 0.7 nm diameter. These and other characteristics will be discussed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
