The microstructure and selected mechanical properties of Al2O3 + 3 wt.% TiO2 plasma sprayed coatings

Main Article Content

Monika Michalak
Leszek Łatka
Paweł Sokołowski

Abstract




The Al2O3+TiO2 coatings are of the interest of surface engineering due to their high hardness and wear resistance but also increased toughness, when compared to pure Al2O3 ones. This article describes the deposition of Al2O3+3 wt.% TiO2 coatings by Atmospheric Plasma Spraying (APS) technique. The commercial AMI 6300.1 powder (-45 + 22 μm) was used as a feedstock. The 2k+1 spraying experiment, based on two variables, namely spray distance and torch velocity, was designed. The samples were characterized in the terms of morphology, microstructure, microhardness and roughness. It was observed that the shorter spray distance resulted in lower porosity, higher microhardness and lower roughness of coatings.




Downloads

Download data is not yet available.

Article Details

How to Cite
[1]
M. Michalak, L. Łatka, and P. Sokołowski, “The microstructure and selected mechanical properties of Al2O3 + 3 wt.% TiO2 plasma sprayed coatings”, WeldTechRev, vol. 91, no. 6, pp. 39-45, Oct. 2019.
Section
Articles

Funding data

References

Fauchais P., Vardelle A.M., Dussoubs B., Quo Vadis Thermal Spraying? Journal of Thermal Spray Technology, 2001, Vol. 10(1), 44–66.

Global Powder Coatings Market Set for Rapid Growth, To Reach Around USD 11.0 Billion by 2020. Available online: https://www.marketresearchstore.com/news/global-powder-coatings-market-179 (accessed on 19.02.2019)

Oerlikon Metco, Material Product Data Sheet Alumina 3% Titania Thermal Spray Powders 2019.

Toma F.-L., Berger L.-M., Stahr C.C., Naumann T., Langner S., Microstructures and functional properties of suspension-sprayed Al2O3 and TiO2 coatings: an overview, Journal of Thermal Spray Technology, 2010, Vol. 19(1–2), 262-274.

Oerlikon Metco, Material Product Data Sheet Alumina 13% Titania Thermal Spray Powders 2019.

Oerlikon Metco, Material Product Data Sheet Alumina 40% Titania Thermal Spray Powders 2019.

Berger L.-M., Sempf K., Sohn Y.J., Vassen R., Influence of Feedstock Powder Modification by Heat Treatments on the Properties of APS-Sprayed Al2O3-40% TiO2 Coatings, Journal of Thermal Spray Technology, 2018, Vol. 27(4), 654-666.

Hejwowski T., Investigations into the degradation mechanism of thermal barrier applied in IC engine, Journal of KONES, 2009, Vol. 16(3), 129–134.

Pierlot C., Pawłowski L., Bigan M., Chagnon P., Design of experiments in thermal spraying: A review, Surface and Coatings Technology, 2008, Vol. 202(18), 4483–4490.

Material Product Datasheet Euromat AMI 6300.1.

Candidato R., Sokołowski P., Łatka L., Kozerski S., Pawłowski L., Denoirjean A., Plasma spraying of hydroxyapatite coatings using powder, suspension and solution feedstocks, Welding Technology Review 2015, Vol. 87(10), 64–71.

Pawłowski L., Finely grained nanometric and submicrometric coatings by thermal spraying: A review, Surface and Coatings Technology, 2008, Vol. 202(18), 4318–4328.

Praxair Surface Technologies, Model SG-100 Plasma Spray Gun Operator’s Manual 2011.

ASTM E2109-01(2014), Standard Test Methods for Determining Area Percentage Porosity in Thermal Sprayed Coatings, ASTM International, West Conshohocken, PA, 2014.

Lin X., Zeng Y., Lee S.W., Ding C., Characterization of alumina-3 wt.% titania coatings prepared by plasma spraying of nanostructured powders, Journal of the European Ceramic Society, 2004, Vol. 24(4), 627–634.

Sahab A.R.M., Saad N.H., Kasolang S., Saedon J., Impact of Plasma Spray Variables on mechanical and Wear Behaviour of Plasma Sprayed Al2O3 3%wt TiO2 Coating in Abrasion and Erosion Application, Procedia Engineering, 2012, Vol. 41, 1689–1695.

Tian W., Wang Y., Yang Y., Three body abrasive wear characteristics of plasma sprayed conventional and nanostructured Al2O3-13%TiO2 coatings, Tribology International, 2010, Vol. 43(5-6), 876–881.

Islak S., Buytoz S., Ersoz E., Orhan N., Stokes J., Salem Hashmi M., Somunkiran I., Tosun N., Effect on microstructure of TiO2 rate in Al2O3-TiO2 composite coating produced using plasma spray method, Optoelectronics and Advanced Materials – Rapid Communications, 2012, Vol. 6(9-10), 844–849.

Singh V.P., Sil A., Jayaganthan R., A study on sliding and erosive wear behaviour of atmospheric plasma sprayed conventional and nanostructured alumina coatings, Materials and Design, 2011, Vol. 32(2), 584–591.

Vijay M., Selvarajan V., Yugeswaran S., Ananthapadmanabhan P.V., Sreekumar K.P., Effect of spraying parameters on deposition efficiency and wear behavior of plasma sprayed alumina-titania composite coatings, Plasma Science and Technology, 2009, Vol.11, 666.