Microstructures, phase and mechanical characterisation of Al2O3-ZrO2-TiO2 coating produced by atmospheric plasma spraying
Cynthia Sin Ting Chang,
Marcus Wyss,
Michal Andrzejewski,
Geoffrey Darut,
Lukas Graf,
Vladimir Novak,
Margie Olbinado,
Susanne Erpel,
Alexander Vogel,
Simon Bode,
Michael de Wild,
Armando Salito
Affiliations
Cynthia Sin Ting Chang
ANAXAM, Park Innovarre, Parkstrasse 1, CH-5234 Villigen, Switzerland; Corresponding author.
Marcus Wyss
Swiss Nanoscience Institute, University of Basel, 4056 Basel, Switzerland
Michal Andrzejewski
ANAXAM, Park Innovarre, Parkstrasse 1, CH-5234 Villigen, Switzerland; Laboratory for Condensed Matter, Paul Scherrer Institut, Forschungsstrasse 111, CH-5232 Villigen PSI, Switzerland
Geoffrey Darut
UTBM, CNRS, ICB, F-90010 Belfort cedex, France
Lukas Graf
Institute for Medical Engineering and Medical Informatics, School of Life Sciences FHNW Hofackerstrasse 30, CH-4132 Muttenz, Switzerland
Vladimir Novak
ANAXAM, Park Innovarre, Parkstrasse 1, CH-5234 Villigen, Switzerland
Margie Olbinado
ANAXAM, Park Innovarre, Parkstrasse 1, CH-5234 Villigen, Switzerland; Laboratory for Macromolecules and Bioimaging, Paul Scherrer Institut, Forschungsstrasse 111, CH-5232 Villigen PSI, Switzerland
Susanne Erpel
Swiss Nanoscience Institute, University of Basel, 4056 Basel, Switzerland
Alexander Vogel
Swiss Nanoscience Institute, University of Basel, 4056 Basel, Switzerland
Simon Bode
Institute for Photon Science and Synchrotron Radiation, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
Michael de Wild
Institute for Medical Engineering and Medical Informatics, School of Life Sciences FHNW Hofackerstrasse 30, CH-4132 Muttenz, Switzerland
The microstructure, crystallographic phases, and mechanical properties of a newly developed Al2O3 – TiO2 – ZrO2 ternary ceramic coating were characterized. The coatings were produced by atmospheric plasma spraying as a preblended powder on Ti-6Al-4 V substrates using the new generation of the Debye-Larmor cascaded plasma torch. The 400 μm thick as-sprayed ternary ceramic coating is compact and neither delamination nor inter-/trans-granular cracks were found. The coating consists of single phase α-Al2O3, monoclinic m-ZrO2, and a nanocrystalline dual phase structure of α-Al2O3 and m-ZrO2. Ti is either present as ZrTiO4 or as solute in the dual phase. Cracking from the tip of the indent is rare and delamination was not observed after the progressive scratch test. The coating has potential in high wear applications for example in medical devices.
