Deposition of Alumina-titania Nanostructured Coating by a New Multi-chamber Gas-dynamic Accelerator

Authors M.G. Kovaleva2 , M.S. Prozorova2, M.Yu. Arseenko2 , M.N. Yapryntsev2, K.N. Mamunin2, V.V. Sirota2 , A.Y. Altukhov1 , E.V. Ageev1
Affiliations

1 Southwest State University, 94, 50 Let Oktyabrya st., 305040, Kursk, Russia

2 Belgorod National Research University, 85, Pobedy st., 308015 Belgorod, Russia

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Issue Volume 8, Year 2016, Number 3
Dates Received 18 May 2016; published online 03 October 2016
Citation M.G. Kovaleva, M.S. Prozorova, M.Yu. Arseenko, et al., J. Nano- Electron. Phys. 8 No 3, 03018 (2016)
DOI 10.21272/jnep.8(3).03018
PACS Number(s) 68.37.Hk, 68.37.Yz, 62.20.Qp
Keywords Alumina–titania coatings, Multi-chamber gas-dynamic accelerator (2) , Microstructure (20) , Hardness (11) .
Annotation The aim of the study was to characterize alumina-titania (Al2O3:Ti wt ratio  87:13) coatings were deposited by a new multi-chamber gas-dynamic accelerator on a grit blasted steel substrate. The alumina-titania coatings were characterized using scanning electron microscopy, X-ray diffraction techniques and Vickers hardness tester at a test load 200 g. The coating was well-adhered onto corrosion-resistant steel substrate. Obtained coatings possessed a unique microstructure consisting of fully melted regions with the microstructure similar to a typical thermal sprayed lamellar morphology and areas comprising unmelted or partially melted particles. The dense alumina-titania coatings with hardness of 657 ± 70 HV0.2 and porosity of less than 0.6% have been prepared by a new multi-chamber gas-dynamic accelerator.

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