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    Comparison of Dry Sliding Tribological Behavior of Nanostructured Al2O3–13 wt% TiO2 Coatings Prepared by High-Efficiency Supersonic Plasma Spraying and Atmospheric Plasma Spraying

    Source: Journal of Tribology:;2020:;volume( 143 ):;issue: 007::page 071702-1
    Author:
    Jin, Zi-ang
    ,
    Ma, Jian-long
    ,
    Zhu, Li-na
    ,
    Wang, Hai-dou
    ,
    Li, Guo-lu
    ,
    Liu, Ming
    DOI: 10.1115/1.4048886
    Publisher: 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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      Comparison of Dry Sliding Tribological Behavior of Nanostructured Al2O3–13 wt% TiO2 Coatings Prepared by High-Efficiency Supersonic Plasma Spraying and Atmospheric Plasma Spraying

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    contributor authorJin, Zi-ang
    contributor authorMa, Jian-long
    contributor authorZhu, Li-na
    contributor authorWang, Hai-dou
    contributor authorLi, Guo-lu
    contributor authorLiu, Ming
    date accessioned2022-02-05T22:03:00Z
    date available2022-02-05T22:03:00Z
    date copyright11/10/2020 12:00:00 AM
    date issued2020
    identifier issn0742-4787
    identifier othertrib_143_7_071702.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4276815
    description abstractPlasma-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.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleComparison of Dry Sliding Tribological Behavior of Nanostructured Al2O3–13 wt% TiO2 Coatings Prepared by High-Efficiency Supersonic Plasma Spraying and Atmospheric Plasma Spraying
    typeJournal Paper
    journal volume143
    journal issue7
    journal titleJournal of Tribology
    identifier doi10.1115/1.4048886
    journal fristpage071702-1
    journal lastpage071702-10
    page10
    treeJournal of Tribology:;2020:;volume( 143 ):;issue: 007
    contenttypeFulltext
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