Comparison of Dry Sliding Tribological Behavior of Nanostructured Al2O3–13 wt% TiO2 Coatings Prepared by High-Efficiency Supersonic Plasma Spraying and Atmospheric Plasma SprayingSource: Journal of Tribology:;2020:;volume( 143 ):;issue: 007::page 071702-1DOI: 10.1115/1.4048886Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Plasma-sprayed ceramic coatings have been widely used in friction and wear protection of mechanical parts. In this paper, the nanostructured Al2O3–13 wt% TiO2 coatings were prepared by high-efficiency supersonic plasma spraying (HESP) and atmospheric plasma spraying (APS), respectively. The surface and section morphology of the coatings were observed by scanning electron microscopy (SEM). The phase composition of the coatings was analyzed by X-ray diffraction (XRD). The dry sliding friction properties of the coatings were tested on UMT-3 friction and wear testing machine. The results show that after plasma spraying, a large amount of γ-Al2O3 phase appears, while the TiO2 phase almost disappears in the coatings; compared with APS, the coatings sprayed by HESP have fewer defects and better coating quality; under dry friction condition, the steady-state friction coefficient of the coatings sprayed by HESP and APS all decreases with the increase of load, and the wear volume all increases with the increase of load. When the load is more than 40 N, wear volume of the coatings sprayed by APS is basically twice that of HESP; the wear mechanism of the coatings sprayed by HESP is the laminar cracking, peeling off and the adhesive wear.
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contributor author | Jin, Zi-ang | |
contributor author | Ma, Jian-long | |
contributor author | Zhu, Li-na | |
contributor author | Wang, Hai-dou | |
contributor author | Li, Guo-lu | |
contributor author | Liu, Ming | |
date accessioned | 2022-02-05T22:03:00Z | |
date available | 2022-02-05T22:03:00Z | |
date copyright | 11/10/2020 12:00:00 AM | |
date issued | 2020 | |
identifier issn | 0742-4787 | |
identifier other | trib_143_7_071702.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4276815 | |
description abstract | Plasma-sprayed ceramic coatings have been widely used in friction and wear protection of mechanical parts. In this paper, the nanostructured Al2O3–13 wt% TiO2 coatings were prepared by high-efficiency supersonic plasma spraying (HESP) and atmospheric plasma spraying (APS), respectively. The surface and section morphology of the coatings were observed by scanning electron microscopy (SEM). The phase composition of the coatings was analyzed by X-ray diffraction (XRD). The dry sliding friction properties of the coatings were tested on UMT-3 friction and wear testing machine. The results show that after plasma spraying, a large amount of γ-Al2O3 phase appears, while the TiO2 phase almost disappears in the coatings; compared with APS, the coatings sprayed by HESP have fewer defects and better coating quality; under dry friction condition, the steady-state friction coefficient of the coatings sprayed by HESP and APS all decreases with the increase of load, and the wear volume all increases with the increase of load. When the load is more than 40 N, wear volume of the coatings sprayed by APS is basically twice that of HESP; the wear mechanism of the coatings sprayed by HESP is the laminar cracking, peeling off and the adhesive wear. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Comparison of Dry Sliding Tribological Behavior of Nanostructured Al2O3–13 wt% TiO2 Coatings Prepared by High-Efficiency Supersonic Plasma Spraying and Atmospheric Plasma Spraying | |
type | Journal Paper | |
journal volume | 143 | |
journal issue | 7 | |
journal title | Journal of Tribology | |
identifier doi | 10.1115/1.4048886 | |
journal fristpage | 071702-1 | |
journal lastpage | 071702-10 | |
page | 10 | |
tree | Journal of Tribology:;2020:;volume( 143 ):;issue: 007 | |
contenttype | Fulltext |