Laser cladding of CoWSi/WSi2 on Ni substrate and evaluation of its high temperature oxidation behavior

M. Zarezadeh Mehrizi; M. Shamanian; A. Saidi; R. Shojarazavi

doi:10.1016/j.ceramint.2014.05.065

Laser cladding of CoWSi/WSi₂ on Ni substrate and evaluation of its high temperature oxidation behavior

M. Zarezadeh Mehrizi^*
, M. Shamanian
, A. Saidi
, R. Shojarazavi

^*Corresponding author for this work

Research output: Journal Publication › Article › peer-review

19 Citations (Scopus)

Abstract

A CoWSi/WSi₂ coating was cladded on a nickel substrate using Nd:YAG pulsed laser. Microstructure and composition of the coating were characterized by X-ray diffraction (XRD) as well as scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDS). The microstructure evaluations demonstrated that a uniform free cracks coating was formed, which metallurgically bonded to the substrate. XRD and EDS analysis results showed that some Ni dilution occurred at the coating/substrate interface and that the coating consisted of CoWSi, WSi₂ and γ-Co. Cyclic oxidation behavior of the coating indicated that the CoWSi/WSi₂ coating could effectively prevent the oxidation of nickel at 1100 °C in air up to 40 h. The oxide scale was composed of CoO, SiO₂, WO₃ and NiCo₂O₄.

Original language	English
Pages (from-to)	13447-13452
Number of pages	6
Journal	Ceramics International
Volume	40
Issue number	8 PART B
DOIs	https://doi.org/10.1016/j.ceramint.2014.05.065
Publication status	Published - Sept 2014
Externally published	Yes

Free Keywords

Cyclic oxidation
Laser cladding
Microstructure

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

Access to Document

10.1016/j.ceramint.2014.05.065

Cite this

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title = "Laser cladding of CoWSi/WSi2 on Ni substrate and evaluation of its high temperature oxidation behavior",

abstract = "A CoWSi/WSi2 coating was cladded on a nickel substrate using Nd:YAG pulsed laser. Microstructure and composition of the coating were characterized by X-ray diffraction (XRD) as well as scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDS). The microstructure evaluations demonstrated that a uniform free cracks coating was formed, which metallurgically bonded to the substrate. XRD and EDS analysis results showed that some Ni dilution occurred at the coating/substrate interface and that the coating consisted of CoWSi, WSi2 and γ-Co. Cyclic oxidation behavior of the coating indicated that the CoWSi/WSi2 coating could effectively prevent the oxidation of nickel at 1100 °C in air up to 40 h. The oxide scale was composed of CoO, SiO2, WO3 and NiCo2O4.",

keywords = "Cyclic oxidation, Laser cladding, Microstructure",

author = "\{Zarezadeh Mehrizi\}, M. and M. Shamanian and A. Saidi and R. Shojarazavi",

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doi = "10.1016/j.ceramint.2014.05.065",

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TY - JOUR

T1 - Laser cladding of CoWSi/WSi2 on Ni substrate and evaluation of its high temperature oxidation behavior

AU - Zarezadeh Mehrizi, M.

AU - Shamanian, M.

AU - Saidi, A.

AU - Shojarazavi, R.

PY - 2014/9

Y1 - 2014/9

N2 - A CoWSi/WSi2 coating was cladded on a nickel substrate using Nd:YAG pulsed laser. Microstructure and composition of the coating were characterized by X-ray diffraction (XRD) as well as scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDS). The microstructure evaluations demonstrated that a uniform free cracks coating was formed, which metallurgically bonded to the substrate. XRD and EDS analysis results showed that some Ni dilution occurred at the coating/substrate interface and that the coating consisted of CoWSi, WSi2 and γ-Co. Cyclic oxidation behavior of the coating indicated that the CoWSi/WSi2 coating could effectively prevent the oxidation of nickel at 1100 °C in air up to 40 h. The oxide scale was composed of CoO, SiO2, WO3 and NiCo2O4.

AB - A CoWSi/WSi2 coating was cladded on a nickel substrate using Nd:YAG pulsed laser. Microstructure and composition of the coating were characterized by X-ray diffraction (XRD) as well as scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDS). The microstructure evaluations demonstrated that a uniform free cracks coating was formed, which metallurgically bonded to the substrate. XRD and EDS analysis results showed that some Ni dilution occurred at the coating/substrate interface and that the coating consisted of CoWSi, WSi2 and γ-Co. Cyclic oxidation behavior of the coating indicated that the CoWSi/WSi2 coating could effectively prevent the oxidation of nickel at 1100 °C in air up to 40 h. The oxide scale was composed of CoO, SiO2, WO3 and NiCo2O4.

KW - Cyclic oxidation

KW - Laser cladding

KW - Microstructure

UR - https://www.scopus.com/pages/publications/84903833628

U2 - 10.1016/j.ceramint.2014.05.065

DO - 10.1016/j.ceramint.2014.05.065

M3 - Article

AN - SCOPUS:84903833628

SN - 0272-8842

VL - 40

SP - 13447

EP - 13452

JO - Ceramics International

JF - Ceramics International

IS - 8 PART B

ER -