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Production of Cu-Sn-graphite-SiC composite coatings by electrodeposition

Asnavandi, M ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1016/j.surfcoat.2012.11.042
  3. Publisher: 2013
  4. Abstract:
  5. Cu-Sn composites incorporated with graphite and/or SiC particles were produced by electrodeposition technique. The effect of particle concentration in the plating bath and current density on tin content and volume percentage of particles in the coatings has been investigated. Structure, morphology, micro hardness and wear properties of the coatings have been studied. The results showed that particles cause an increase of tin content in the plated Cu-Sn. Graphite and silicon carbide particles had different effects on coating hardness; 7.8. vol.% graphite decreased the hardness of Cu-Sn layer from 231. Hv to 172. Hv whereas, 5.1. vol.% SiC raised the hardness to 316. Hv. Moreover, friction coefficient of pure bronze (77Cu-23Sn) layer, Cu-Sn - 3.4. vol.% SiC and bronze - 6. vol.% graphite composite coatings have been obtained 0.73, 0.53 and 0.25, respectively. While, Cu-Sn coating including overall 7. vol.% both graphite & SiC particles had friction coefficients of 0.34. However, the presence of both particles in the deposited layer led to lower weight loss within wearing test
  6. Keywords:
  7. Electroplating ; Self-lubricant ; Hard particles ; Self-lubricant particles ; Tribological properties ; Coating hardness ; Copper-tin alloy ; Deposited layer ; Different effects ; Electrodeposition technique ; Friction coefficients ; Graphite composite coatings ; Particle concentrations ; Plating bath ; SiC particles ; Silicon carbide particles ; Tin content ; Volume percentage ; Wear properties ; Weight loss ; Bronze ; Composite coatings ; Friction ; Graphite ; Hardness ; Silicon carbide ; Tin
  8. Source: Surface and Coatings Technology ; Volume 216 , 2013 , Pages 207-214 ; 02578972 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0257897212011954