International Journal of

ADVANCED AND APPLIED SCIENCES

EISSN: 2313-3724, Print ISSN: 2313-626X

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 Volume 7, Issue 7 (July 2020), Pages: 25-39

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 Original Research Paper

 Title: Effect of spraying parameters on surface roughness, deposition efficiency, and microstructure of electric arc sprayed brass coating

 Author(s): Zia Ullah Arif 1, 2, *, Masood Shah 1, 3, Ehtsham ur Rehman 2, 4, Ali Tariq 5

 Affiliation(s):

 1Mechanical Engineering Department, University of Engineering and Technology, Taxila, Pakistan
 2Mechanical Engineering Department, University of Management & Technology, Lahore, Pakistan
 3Mechanical Engineering Department, Université de Toulouse, Albi, France
 4Mechanical Engineering Department, University of Engineering and Technology, Lahore, Pakistan
 5School of Mechanical & Manufacturing Engineering, National University of Sciences and Technology, Islamabad, Pakistan

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 * Corresponding Author. 

  Corresponding author's ORCID profile: https://orcid.org/0000-0002-9254-7606

 Digital Object Identifier: 

 https://doi.org/10.21833/ijaas.2020.07.004

 Abstract:

Thermal, chemical, and metallurgical surface treatment techniques are being applied to give materials the desirable properties for numerous applications in service. Nowadays, electric arc spraying of copper alloys has gained importance in surface engineering owing to their excellent mechanical properties. However, electric arc sprayed metallic coating usually has high coating roughness and low deposition efficiency upon adherence to the substrate. In this article, the brass coating was deposited onto a mild steel substrate using a twin wire arc spraying technique. The spraying parameters current, voltage, and spray off distance were varied during the deposition process. To gain an understanding, the effect of these spraying parameters on the characteristics of the coating was investigated in terms of its surface roughness, deposition efficiency, and microstructure. The primary purpose of this research is to optimize the process in terms of coating roughness and deposition efficiency. Based on the results obtained, it was observed that an increase in voltage and spray off distance resulted in an increase in coating roughness, whilst an increase in current resulted in a decrease in coating roughness. Deposition efficiency was also greatly affected by the process parameters and decreased significantly with the longer spray off distance. Furthermore, the deposition efficiency increased with the decrease in surface roughness and vice versa. The best results in terms of low coating roughness, high deposition efficiency, and optimized microstructure were found at 24V, 240A, and 100 mm. The use of small diameter feedstock, supersonic nozzle incorporated in equipment, better surface preparation, and optimized process parameters gave better results as compared to the previous study in the field of electric arc spray coating. 

 © 2020 The Authors. Published by IASE.

 This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

 Keywords: Brass coating, Coating roughness, Deposition efficiency, Electric arc spray, Spraying parameters

 Article History: Received 29 December 2019, Received in revised form 25 March 2020, Accepted 26 March 2020

 Acknowledgment:

We would like to show our gratitude to the dean and principle of USPCAS-E NUST Prof. Dr Zuhair S. Khan for providing all possible help during this research process.

 Compliance with ethical standards

 Conflict of interest: The authors declare that they have no conflict of interest.

 Citation:

 Arif ZU, Shah M, and Rehman E et al. (2020). Effect of spraying parameters on surface roughness, deposition efficiency, and microstructure of electric arc sprayed brass coating. International Journal of Advanced and Applied Sciences, 7(7): 25-39

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 Figures

 Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6 Fig. 7 Fig. 8 Fig. 9

 Tables

 Table 1 Table 2 Table 3

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