Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/4205
Title: Thermal stability of reactive sputtered tungsten oxide coatings
Authors: Parreira, N. M. G. 
Polcar, T. 
Cavaleiro, A. 
Keywords: Tungsten oxide; Reactive sputtering; Structural characterization; Thermal stability
Issue Date: 2007
Citation: Surface and Coatings Technology. 201:16-17 (2007) 7076-7082
Abstract: The thermal stability of different W-O coatings, W100, W90O10, W54O46, W30O70 and W25O75, were studied by in-situ X-ray diffraction at elevated temperatures up to 900 °C. The coatings were deposited by DC reactive magnetron sputtering from a pure tungsten target in an Ar + O2 atmosphere onto Fecralloy alloy. The evolution of the structure of the coatings was studied in both protective and oxidant atmospheres. Three groups of films were identified: (1) W25O75 which showed structural evolution following the W-O phase diagram; (2) amorphous O-deficient WO3 whose structure followed the W-O phase diagram either as WO3 or as its chemical composition depending on annealing in oxidant or protective atmospheres, respectively; and (3) low O-content crystalline films that oxidized from 500 °C.
URI: http://hdl.handle.net/10316/4205
Rights: openAccess
Appears in Collections:FCTUC Eng.Mecânica - Artigos em Revistas Internacionais

Files in This Item:
File Description SizeFormat
file02d94b0d904f439e9bcc3a4657556c3e.pdf462.55 kBAdobe PDFView/Open
Show full item record

Page view(s)

224
checked on Oct 2, 2019

Download(s)

68
checked on Oct 2, 2019

Google ScholarTM

Check


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