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Characterisation of thin films of a non-organofunctional silane on Al-43.4Zn-1.6Si alloy coated steel by ToF-SIMS
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Technology, Department of Materials Science.
2000 In: Secondary Ion Mass Spectrometry SIMS XII: Proceedings of the Twelfth International Conference on Secondary Ion Mass Spectrometry (SIMS XII), 2000, p. 761-764Chapter in book (Other academic) Published
Place, publisher, year, edition, pages
2000. p. 761-764
Identifiers
URN: urn:nbn:se:uu:diva-90444ISBN: 0 444 50323 4 (print)OAI: oai:DiVA.org:uu-90444DiVA, id: diva2:162802
Available from: 2003-05-09 Created: 2003-05-09Bibliographically approved
In thesis
1. Surface Characterisation Using ToF-SIMS, AES and XPS of Silane Films and Organic Coatings Deposited on Metal Substrates
Open this publication in new window or tab >>Surface Characterisation Using ToF-SIMS, AES and XPS of Silane Films and Organic Coatings Deposited on Metal Substrates
2003 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

This work focuses on the surface and interfacial characterisation of silane films of a non-organofunctional silane, 1,2-bis(triethoxysilyl)ethane (BTSE), and an organofunctional silane, γ-mercaptopropyltrimethoxysilane (γ-MPS), deposited on Al, Zn and Al-43.4Zn-1.6Si (AlZn) alloy coated steel. Furthermore, a tribological study of a vegetable oil coupled to an aluminium surface pre-treated with γ-MPS is presented and, finally, the tribological response of thin organic coatings exposed to a sliding contact as evaluated by surface analysis is discussed. The main analyses techniques used were time-of-flight secondary ion mass spectrometry (ToF-SIMS), Auger electron spectroscopy (AES) and x-ray photoelectron spectroscopy (XPS).

The results presented in this thesis show that the combination of ToF-SIMS, AES and XPS analysis can be used in order to obtain useful and complementary information regarding the surface and interface characteristics of silane films and organic coatings deposited on metal substrates.

The major result regarding the silane films is that the silane film composition/structure is not dependent of pH-value during deposition or type of metal substrate. The presence of Si-O-Me ion fragments in the ToF-SIMS spectra is a strong indication that a chemical interaction between the silane film and the metal substrate exists. Furthermore, it has been shown that it is possible to bond a vegetable oil to a thiol functionalised aluminium surface and to produce a coating thick enough to obtain desired friction and wear characteristics. Finally, the use of ToF-SIMS analysis makes it possible to distinguish between mechanical and tribochemical wear mechanisms.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2003. p. 59
Series
Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1104-232X ; 843
Keywords
Materials science, Silanes, Organic films, ToF-SIMS, AES, XPS, Materialvetenskap
National Category
Materials Engineering
Research subject
Materials Science
Identifiers
urn:nbn:se:uu:diva-3438 (URN)91-554-5644-8 (ISBN)
Public defence
2003-06-05, Hörsalen, Teknikdalen, Borlänge, 10:00
Opponent
Supervisors
Available from: 2003-05-09 Created: 2003-05-09Bibliographically approved

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