Improvement of solar absorbing property of Ni-Mo based thermal spray coatings by laser surface treatment

Ya Gao; Jiangtao Xiong; Dianqing Gong; Jinglong Li; Ming Ding

doi:10.1016/j.vacuum.2015.07.018

Improvement of solar absorbing property of Ni-Mo based thermal spray coatings by laser surface treatment

Ya Gao, Jiangtao Xiong, Dianqing Gong, Jinglong Li, Ming Ding

School of Materials Sience and Engineering

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

21 Scopus citations

Abstract

Abstract Ni-Mo and Ni-Mo-Co high velocity oxy-fuel (HVOF) sprayed coatings were treated by Nd:YAG laser source, for the purpose of improving the solar absorbing effect. The coatings after laser treatment showed increment on solar absorptance (α) as the Ni-Mo sample increased from 0.84 to 0.88 and Ni-Mo-Co sample from 0.75 to 0.83. To elucidate the mechanisms for the improvement, microstructures of the coatings before and after laser treatment were investigated by X-ray diffraction (XRD), scanning electron microscope (SEM) and laser scanning confocal microscope (LSCM). The results demonstrated that the enhanced α was attributed to multiple mechanisms including the decrease in nickel oxide content, the increase in metallic volume fraction, the reduction of micro-defects as well as the greater surface roughness.

Original language	English
Article number	6754
Pages (from-to)	64-69
Number of pages	6
Journal	Vacuum
Volume	121
DOIs	https://doi.org/10.1016/j.vacuum.2015.07.018
State	Published - 11 Aug 2015

Keywords

HVOF
Laser treatment
Microstructures
Ni-Mo coatings
Solar absorptance

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10.1016/j.vacuum.2015.07.018

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title = "Improvement of solar absorbing property of Ni-Mo based thermal spray coatings by laser surface treatment",

abstract = "Abstract Ni-Mo and Ni-Mo-Co high velocity oxy-fuel (HVOF) sprayed coatings were treated by Nd:YAG laser source, for the purpose of improving the solar absorbing effect. The coatings after laser treatment showed increment on solar absorptance (α) as the Ni-Mo sample increased from 0.84 to 0.88 and Ni-Mo-Co sample from 0.75 to 0.83. To elucidate the mechanisms for the improvement, microstructures of the coatings before and after laser treatment were investigated by X-ray diffraction (XRD), scanning electron microscope (SEM) and laser scanning confocal microscope (LSCM). The results demonstrated that the enhanced α was attributed to multiple mechanisms including the decrease in nickel oxide content, the increase in metallic volume fraction, the reduction of micro-defects as well as the greater surface roughness.",

keywords = "HVOF, Laser treatment, Microstructures, Ni-Mo coatings, Solar absorptance",

author = "Ya Gao and Jiangtao Xiong and Dianqing Gong and Jinglong Li and Ming Ding",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd.",

year = "2015",

month = aug,

day = "11",

doi = "10.1016/j.vacuum.2015.07.018",

language = "英语",

volume = "121",

pages = "64--69",

journal = "Vacuum",

issn = "0042-207X",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Improvement of solar absorbing property of Ni-Mo based thermal spray coatings by laser surface treatment

AU - Gao, Ya

AU - Xiong, Jiangtao

AU - Gong, Dianqing

AU - Li, Jinglong

AU - Ding, Ming

PY - 2015/8/11

Y1 - 2015/8/11

N2 - Abstract Ni-Mo and Ni-Mo-Co high velocity oxy-fuel (HVOF) sprayed coatings were treated by Nd:YAG laser source, for the purpose of improving the solar absorbing effect. The coatings after laser treatment showed increment on solar absorptance (α) as the Ni-Mo sample increased from 0.84 to 0.88 and Ni-Mo-Co sample from 0.75 to 0.83. To elucidate the mechanisms for the improvement, microstructures of the coatings before and after laser treatment were investigated by X-ray diffraction (XRD), scanning electron microscope (SEM) and laser scanning confocal microscope (LSCM). The results demonstrated that the enhanced α was attributed to multiple mechanisms including the decrease in nickel oxide content, the increase in metallic volume fraction, the reduction of micro-defects as well as the greater surface roughness.

AB - Abstract Ni-Mo and Ni-Mo-Co high velocity oxy-fuel (HVOF) sprayed coatings were treated by Nd:YAG laser source, for the purpose of improving the solar absorbing effect. The coatings after laser treatment showed increment on solar absorptance (α) as the Ni-Mo sample increased from 0.84 to 0.88 and Ni-Mo-Co sample from 0.75 to 0.83. To elucidate the mechanisms for the improvement, microstructures of the coatings before and after laser treatment were investigated by X-ray diffraction (XRD), scanning electron microscope (SEM) and laser scanning confocal microscope (LSCM). The results demonstrated that the enhanced α was attributed to multiple mechanisms including the decrease in nickel oxide content, the increase in metallic volume fraction, the reduction of micro-defects as well as the greater surface roughness.

KW - HVOF

KW - Laser treatment

KW - Microstructures

KW - Ni-Mo coatings

KW - Solar absorptance

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U2 - 10.1016/j.vacuum.2015.07.018

DO - 10.1016/j.vacuum.2015.07.018

M3 - 文章

AN - SCOPUS:84938870737

SN - 0042-207X

VL - 121

SP - 64

EP - 69

JO - Vacuum

JF - Vacuum

M1 - 6754

ER -

Improvement of solar absorbing property of Ni-Mo based thermal spray coatings by laser surface treatment

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Keywords

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