Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/4174
Title: Thin films with chemically graded functionality based on fluorine polymers and stainless steel
Authors: Piedade, A. P. 
Nunes, J. 
Vieira, M. T. 
Keywords: Functionally graded coatings
Issue Date: 2008
Citation: Acta Biomaterialia. 4:4 (2008) 1073-1080
Abstract: Thin films of stainless steel and poly(tetrafluoroethylene) were co-deposited, by radiofrequency magnetron sputtering, in an inert atmosphere in order to produce a functionally graded material as a coating on a traditional biomaterial, where non-ferromagnetic characteristics and improved wettability must be ensured. These thin films are intended to modify the surface of SS316L used in stents, where the bulk/thin film couple should be regarded as a single material. This requires excellent adhesion of the coating to the substrate. All coatings were deposited with an average thickness of 500 nm. The chemical and phase characterization of the surface revealed that, with the increase in F content, the thin film evolves from a ferritic phase ([alpha]) to an amorphous phase with dispersion of a new crystalline ceramic phase (FeF2). For intermediate F content values, an austenitic (1 1 1) phase ([gamma]) was present. Bearing in mind the envisaged application, the best results were attained for thin films with a fluorine content between 10 and 20 at.%.
URI: https://hdl.handle.net/10316/4174
DOI: 10.1016/j.actbio.2008.02.023
Rights: openAccess
Appears in Collections:FCTUC Eng.Mecânica - Artigos em Revistas Internacionais

Files in This Item:
File Description SizeFormat
file40a02f54c09948299afed0653e6661ef.pdf844.65 kBAdobe PDFView/Open
Show full item record

SCOPUSTM   
Citations

22
checked on May 20, 2024

WEB OF SCIENCETM
Citations

23
checked on Mar 2, 2024

Page view(s) 50

551
checked on May 14, 2024

Download(s)

344
checked on May 14, 2024

Google ScholarTM

Check

Altmetric

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.