Microstructure and Mechanical Properties of HVOF-Sprayed NiCrBSi-WC(Co) Coatings

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Nadim Mohammad Hassan; SHIRVANI KOUROSH; Nahvi Sayed Mehran

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Paper Information

Journal: IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING Year:2019 | Volume:14 | Issue:38 Page(s): 53-60

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Information Journal Paper

Title

Microstructure and Mechanical Properties of HVOF-Sprayed NiCrBSi-WC(Co) Coatings

Author(s)

Nadim Mohammad Hassan | SHIRVANI KOUROSH | Nahvi Sayed Mehran | Issue Writer Certificate

Keywords

Thermal spray coatingQ1

HVOFQ2

NiCrBSiQ2

tungsten carbideQ2

microstructureQ2

hardnessQ2

wearQ2

Abstract

In this paper, the effect of changing the spray distance in the high-velocity oxy-fuel (HVOF) spray method to apply NiCrBSi-WC(Co) coatings on the resulting microstructural changes and also on the mechanical properties of the coating (including adhesion strength, hardness and wear resistance) are discussed. The SS304 stainless steel sheet was used to make substrates. In the range of 200-300 mm, where the spraying distance was changed, with increasing spray distances, more suitable and homogeneous layered microstructure, having less porosity and less melted particles, as well as a better distribution of carbide particles in the coating structure, was obtained. The NiCrBSi-WC(Co) coating applied by HVOF gun at a distance of 300 mm indicated the most suitable structure meanwhile the highest adhesion strength to the substrate, the highest hardness, and the lowest wear rate.

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APA: Copy

Nadim, Mohammad Hassan, SHIRVANI, KOUROSH, & Nahvi, Sayed Mehran. (2019). Microstructure and Mechanical Properties of HVOF-Sprayed NiCrBSi-WC(Co) Coatings. IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING, 14(38 ), 53-60. SID. https://sid.ir/paper/402385/en

Vancouver: Copy

Nadim Mohammad Hassan, SHIRVANI KOUROSH, Nahvi Sayed Mehran. Microstructure and Mechanical Properties of HVOF-Sprayed NiCrBSi-WC(Co) Coatings. IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING[Internet]. 2019;14(38 ):53-60. Available from: https://sid.ir/paper/402385/en

IEEE: Copy

Mohammad Hassan Nadim, KOUROSH SHIRVANI, and Sayed Mehran Nahvi, “Microstructure and Mechanical Properties of HVOF-Sprayed NiCrBSi-WC(Co) Coatings,” IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING, vol. 14, no. 38 , pp. 53–60, 2019, [Online]. Available: https://sid.ir/paper/402385/en

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