Abstract/Details

Caractérisation des propriétés mécaniques de couches minces déposées par plasma et de surfaces polymériques traitées par plasma

Dahl, Sigrid.   Ecole Polytechnique, Montreal (Canada) ProQuest Dissertations Publishing,  1999. MQ48846.

Abstract (summary)

In this work, several indentation (Fisherscope H100, NHT) and scratch techniques (MST, LLMST) are used for the characterisation of the mechanical properties of two types of coatings (SiO2 and SiN1.3), plasma deposited on different substrates (polycarbonate (PC), silicon and glass), and of plasma. (N2 and He) modified PC surfaces. To complement the mechanical characterisation, X-ray photoelectron spectroscopy is used for chemical and structural analysis while AFM is used to image the surface topography.

Hardness, elasticity and stiffness were found to increase after plasma exposition of the PC surface. Modification of the mechanical properties of a thin surface layer, also called interphase, is due to a crosslinking effect of the vacuum ultraviolet radiations from the plasma.

Deposition of a SiO2 film on plasma modified PC shows that the presence of the interphase prior to the deposition establish a progressive hardness variation from the coating to the substrate. Similarly, the presence of the interphase improved the adhesion and scratch resistance of SiN1.3 films deposited on plasma modified PC. (Abstract shortened by UMI.)

Indexing (details)


Subject
Condensation;
Condensed matter physics
Classification
0611: Condensed matter physics
Identifier / keyword
Pure sciences; CARACTERISATION; COUCHES; DE; DEPOSEES; DES; ET; MECANIQUES; MINCES; PAR; PLASMA; POLYMERIQUES; PROPRIETES; SURFACES; TRAITEES
Title
Caractérisation des propriétés mécaniques de couches minces déposées par plasma et de surfaces polymériques traitées par plasma
Alternate title
Characterization of the Mechanical Properties of Thin Layers Deposited by Plasma and of Polymeric Surfaces Treated by Plasma
Author
Dahl, Sigrid
Number of pages
98
Publication year
1999
Degree date
1999
School code
1105
Source
MAI 38/06M, Masters Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
978-0-612-48846-5
Advisor
Martinu, Ludvik; Sapieha, Jolanta
University/institution
Ecole Polytechnique, Montreal (Canada)
University location
Canada -- Quebec, CA
Degree
M.Sc.A.
Source type
Dissertation or Thesis
Language
French
Document type
Dissertation/Thesis
Dissertation/thesis number
MQ48846
ProQuest document ID
304579562
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
https://www.proquest.com/docview/304579562/abstract/