Characterisations of Cu-based coated Al7075 via plasma-spray technique

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This work aims to characterise a Cu-based coating material on Al-7075 by using a plasma-spray technique in order to enhance the surface properties of components for automotive applications. Plasma-spray is a process for formation coating on substrates whereby a feedstock is rapidly heated to a molten or near-molten state, and a gas are use to propel the material toward suitably prepared substrate. The most prominent advantages of this method are virtually any coating material can be used and any substrate material can be coated with low thermal stress on substrate parts and high deposition rates [1]. The coating characteristic can be controlled by varying the process variables such as input powers, material feed rates, gas pressures, surface preparation of the substrate and spray distance [2]. The effect of crucial parameters like the electric power input to plasma, spray rate and substrate roughness were studied. The experiments of spraying were design using a 23 fractional factorial plan. The plan allows studying the effect of each factor on the response variables, as well as the effect of interactions between factors on the response variable at the least number of experiment runs. The coating layers have been characterised with respect to the structure by using a scanning electron microscopy (SEM). The result indicates that sprayed particles cool and built up into pancake-like shapes splat, characteristic a plasma spray electric process products. It was found that the optimum parameters were obtained at a power of 24.6 kW, with a powder feed rate of 1 rpm and substrate roughness of 0.5μm.

Original languageEnglish
Title of host publicationKey Engineering Materials
Pages313-318
Number of pages6
Volume462-463
DOIs
Publication statusPublished - 2011
Event8th International Conference on Fracture and Strength of Solids 2010, FEOFS2010 - Kuala Lumpur
Duration: 7 Jun 20109 Jun 2010

Publication series

NameKey Engineering Materials
Volume462-463
ISSN (Print)10139826

Other

Other8th International Conference on Fracture and Strength of Solids 2010, FEOFS2010
CityKuala Lumpur
Period7/6/109/6/10

Fingerprint

Plasmas
Substrates
Coatings
Molten materials
Gases
Surface roughness
Spraying
Deposition rates
Thermal stress
Powders
Feedstocks
Surface properties
Experiments
Scanning electron microscopy

Keywords

  • Al7075
  • Cu-based alloys
  • Plasma spray

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Ghazali, M. J., Mat Kamal, S. E., & Abdullah, S. (2011). Characterisations of Cu-based coated Al7075 via plasma-spray technique. In Key Engineering Materials (Vol. 462-463, pp. 313-318). (Key Engineering Materials; Vol. 462-463). https://doi.org/10.4028/www.scientific.net/KEM.462-463.313

Characterisations of Cu-based coated Al7075 via plasma-spray technique. / Ghazali, Mariyam Jameelah; Mat Kamal, S. E.; Abdullah, Shahrum.

Key Engineering Materials. Vol. 462-463 2011. p. 313-318 (Key Engineering Materials; Vol. 462-463).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ghazali, MJ, Mat Kamal, SE & Abdullah, S 2011, Characterisations of Cu-based coated Al7075 via plasma-spray technique. in Key Engineering Materials. vol. 462-463, Key Engineering Materials, vol. 462-463, pp. 313-318, 8th International Conference on Fracture and Strength of Solids 2010, FEOFS2010, Kuala Lumpur, 7/6/10. https://doi.org/10.4028/www.scientific.net/KEM.462-463.313
Ghazali MJ, Mat Kamal SE, Abdullah S. Characterisations of Cu-based coated Al7075 via plasma-spray technique. In Key Engineering Materials. Vol. 462-463. 2011. p. 313-318. (Key Engineering Materials). https://doi.org/10.4028/www.scientific.net/KEM.462-463.313
Ghazali, Mariyam Jameelah ; Mat Kamal, S. E. ; Abdullah, Shahrum. / Characterisations of Cu-based coated Al7075 via plasma-spray technique. Key Engineering Materials. Vol. 462-463 2011. pp. 313-318 (Key Engineering Materials).
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