Tribological performance of a Ni-based composite coating in artificial seawater

Bo Li; Cong Li; Yimin Gao; Hongjian Guo; Yunchuan Kang; Siyong Zhao

doi:10.3390/coatings9110747

Tribological performance of a Ni-based composite coating in artificial seawater

Bo Li
, Cong Li
, Yimin Gao
, Hongjian Guo
, Yunchuan Kang
, Siyong Zhao

School of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

NiCrAlY and NiCrAlY-Mo coatings were fabricated by atmospheric plasma spraying (APS). The corrosion-wear performance of the coatings was investigated in artificial seawater and the synergistic mechanism between wear and corrosion were evaluated in detail. Results showed that the diFFraction peaks of Ni₃Al shifted to the right and the microhardness of the coating was improved from 329.8 HV to 342.5 HV with adding the Mo element. Meanwhile, the NiCrAlY-Mo coating had a lower friction coefficient, with a wear rate of 0.26 and 3.69 × 10^-6 mm3/Nm, compared to the NiCrAlY coating with a wear rate of 0.37 and 4.67 × 10^-6 mm3/Nm. The NiCrAlY coating had severe corrosion and the corrosion mainly occurred in grain boundary. Adding the Mo element, the Mo element was distributed in the grain boundary and the coating had a lower corrosion rate and visibly slighter corrosion. The NiCrAlY-Mo coating had excellent corrosion-wear properties in artificial seawater.

Original language	English
Article number	747
Journal	Coatings
Volume	9
Issue number	11
DOIs	https://doi.org/10.3390/coatings9110747
State	Published - 2019

Keywords

Corrosion rate
Corrosion-wear performance
Grain boundary
Synergistic mechanism
Worn surface

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10.3390/coatings9110747

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@article{56665c478c9d443ebd8ddbfa7005bd53,

title = "Tribological performance of a Ni-based composite coating in artificial seawater",

abstract = "NiCrAlY and NiCrAlY-Mo coatings were fabricated by atmospheric plasma spraying (APS). The corrosion-wear performance of the coatings was investigated in artificial seawater and the synergistic mechanism between wear and corrosion were evaluated in detail. Results showed that the diFFraction peaks of Ni3Al shifted to the right and the microhardness of the coating was improved from 329.8 HV to 342.5 HV with adding the Mo element. Meanwhile, the NiCrAlY-Mo coating had a lower friction coefficient, with a wear rate of 0.26 and 3.69 × 10-6 mm3/Nm, compared to the NiCrAlY coating with a wear rate of 0.37 and 4.67 × 10-6 mm3/Nm. The NiCrAlY coating had severe corrosion and the corrosion mainly occurred in grain boundary. Adding the Mo element, the Mo element was distributed in the grain boundary and the coating had a lower corrosion rate and visibly slighter corrosion. The NiCrAlY-Mo coating had excellent corrosion-wear properties in artificial seawater.",

keywords = "Corrosion rate, Corrosion-wear performance, Grain boundary, Synergistic mechanism, Worn surface",

author = "Bo Li and Cong Li and Yimin Gao and Hongjian Guo and Yunchuan Kang and Siyong Zhao",

note = "Publisher Copyright: {\textcopyright} 2019 by the authors.",

year = "2019",

doi = "10.3390/coatings9110747",

language = "英语",

volume = "9",

journal = "Coatings",

issn = "2079-6412",

publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

number = "11",

}

TY - JOUR

T1 - Tribological performance of a Ni-based composite coating in artificial seawater

AU - Li, Bo

AU - Li, Cong

AU - Gao, Yimin

AU - Guo, Hongjian

AU - Kang, Yunchuan

AU - Zhao, Siyong

PY - 2019

Y1 - 2019

N2 - NiCrAlY and NiCrAlY-Mo coatings were fabricated by atmospheric plasma spraying (APS). The corrosion-wear performance of the coatings was investigated in artificial seawater and the synergistic mechanism between wear and corrosion were evaluated in detail. Results showed that the diFFraction peaks of Ni3Al shifted to the right and the microhardness of the coating was improved from 329.8 HV to 342.5 HV with adding the Mo element. Meanwhile, the NiCrAlY-Mo coating had a lower friction coefficient, with a wear rate of 0.26 and 3.69 × 10-6 mm3/Nm, compared to the NiCrAlY coating with a wear rate of 0.37 and 4.67 × 10-6 mm3/Nm. The NiCrAlY coating had severe corrosion and the corrosion mainly occurred in grain boundary. Adding the Mo element, the Mo element was distributed in the grain boundary and the coating had a lower corrosion rate and visibly slighter corrosion. The NiCrAlY-Mo coating had excellent corrosion-wear properties in artificial seawater.

AB - NiCrAlY and NiCrAlY-Mo coatings were fabricated by atmospheric plasma spraying (APS). The corrosion-wear performance of the coatings was investigated in artificial seawater and the synergistic mechanism between wear and corrosion were evaluated in detail. Results showed that the diFFraction peaks of Ni3Al shifted to the right and the microhardness of the coating was improved from 329.8 HV to 342.5 HV with adding the Mo element. Meanwhile, the NiCrAlY-Mo coating had a lower friction coefficient, with a wear rate of 0.26 and 3.69 × 10-6 mm3/Nm, compared to the NiCrAlY coating with a wear rate of 0.37 and 4.67 × 10-6 mm3/Nm. The NiCrAlY coating had severe corrosion and the corrosion mainly occurred in grain boundary. Adding the Mo element, the Mo element was distributed in the grain boundary and the coating had a lower corrosion rate and visibly slighter corrosion. The NiCrAlY-Mo coating had excellent corrosion-wear properties in artificial seawater.

KW - Corrosion rate

KW - Corrosion-wear performance

KW - Grain boundary

KW - Synergistic mechanism

KW - Worn surface

UR - https://www.scopus.com/pages/publications/85075549806

U2 - 10.3390/coatings9110747

DO - 10.3390/coatings9110747

M3 - 文章

AN - SCOPUS:85075549806

SN - 2079-6412

VL - 9

JO - Coatings

JF - Coatings

IS - 11

M1 - 747

ER -

Tribological performance of a Ni-based composite coating in artificial seawater

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Keywords

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