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Microstructure and electrical properties of coatings of the Cr2O3-TiO2 system

 
: Berger, L.-M.; Stahr, C.C.; Saaro, S.; Thiele, S.

Marple, B.R. ; The Thermal Spray Society -TSS-:
Thermal Spray 2009. ITSC, International Thermal Spray Conference. Proceedings. CD-ROM : Las Vegas, Nevada, USA, 04.-07.05.2009
Las Vegas/Nev., 2009
ISBN: 978-1-61503-004-0
S.103-108
International Thermal Spray Conference (ITSC) <2009, Las Vegas/Nev.>
Englisch
Konferenzbeitrag
Fraunhofer IWS ()
Fraunhofer IKTS ()

Abstract
In the present work the preparation, microstructure, hardness and resistivity of APS- and HVOF-sprayed coatings from all regions of the Cr2O3-TiO2 phase diagram were systematically investigated. Apart from commercially available feedstock powders on the Cr2O3-rich side, five agglomerated and sintered experimental powders on the TiO2-rich side were used. Both spray processes produced homogeneous and lowporosity coatings. Considerable changes in the phase compositions occurred as a result of the spray processes. For coating hardness and electrical resistivity a dependence of the properties on Cr2O3 content was found. The coatings have great potential for application as ceramic coatings with excellent hightemperature stability and electrical conductivity.

: http://publica.fraunhofer.de/dokumente/N-103514.html