Main Article Content
Atmospheric Plasma Spraying (APS) enables deposition of coatings from different materials, including those based on Al2O3 and TiO2. In this work, Al2O3 + 40 wt.% TiO2 coatings were tested. The relationships between mechanical properties, microstructure and spraying parameters (namely: spraying distance and torch scan velocity) were investigated. Commercial -45 + 5 μm powders in agglomerated as- produced state were sprayed onto the stainless steel 1.4301 substrates. The aim of the study was to determine the adhesion, microhardness and roughness of coatings but also to characterize their microstructure. It was observed that coatings sprayed from shorter distance were well melted and revealed good adhesion, but at the same time they were more porous and of lower microhardness than those deposited from the longer spraying distance.
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Yugeswaran S., Selvarajan V., Vijay M., Sreekumar K.P., Sreekumar K.P., Influence of critical plasma spraying parameter (CPSP) on plasma sprayed Alumina–Titania composite coatings, Ceramics International 2010, Vol.
Berkath A.K., Kumar A., Suresh P., Tribological Behaviour of Plasma Sprayed Al2O3-TiO2 Coating on Al-6082T6
Substrate, International Journal of Innovative Research in Science, Engineering and Technology 2014, Vol. 3(6), 13956-13963.
Hejwowski T., Investigations into the degradation mechanism of thermal barrier applied in IC engine, Journal of KONES, 2009, Vol. 16(3), 129-134.
Winnicki M., Małachowska A., Rutkowska-Gorczyca M., Ambroziak A., Przyczepność powłok miedzi na podłożu aluminiowym naniesionych metodą LPCS, Welding Technology Review 2014, Vol. 86(2), 47-52.
Łatka L., Niemiec A., Michalak M., Sokołowski P., Tribological properties of Al2O3 + TiO2 coatings manufactured by plasma spraying, Tribology, 2019, Vol. 283(1), 19-24.
Kang J.J., Xu B.S., Wang H.D., Wang C.B., Influence of Spraying Parameters on the Microstructure and Properties of Plasma-sprayed Al2O3/40%TiO2 Coating, Physics Procedia, 2013, Vol. 50, 169-176.
Normand B., Fervel V., Coddet C., Nikitine V. Tribological properties of plasma sprayed alumina–titania coatings: role and control of the microstructure. Surface and Coatings Technology 2000, 278-287.
Rajesh T.S., Rao R.V., Experimental Investigation and Parameter Optimization of Al2O3-40% TiO2 Atmospheric Plasma Spray Coating on SS316 Steel Substrate, Materials Today: Proceedings, 2018, Vol. 5(2), 5012-5020.
Material Product Data Sheet Aluminum Oxide 40% Titanium Dioxide Powders
Tomaszek R., Pawłowski L., Zdanowski J., Grimblot J., Laureyns J., Microstructural transformations of TiO2, Al2O3+13TiO2 and Al2O3+40TiO2 at plasma spraying and laser engraving, Surface and Coatings Technology, 2004, Vol. 185(2-3), 137-149.
Norberg S., Hoffmann S., Yoshimura M., Ishizawa N., Al6Ti2O13, a new phase in the Al2O3-TiO2 system, Acta Crystallographica, 2005, Vol. 61, 35-38.
Michalak M., Łatka L., Sokołowski P. The microstructure and selected mechanical properties of Al2O3 + 3 wt.% TiO2 plasma sprayed coatings, Welding Technology Review, 2019, Vol. 91(6), 39-45.