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Wear Resistant Coatings for Polymeric Substrates Deposited by Atmospheric Pressure Plasma Jet

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Wear resistance and frictional behavior of InZnO thin coatings deposited on an acryl substrate using an atmospheric pressure plasma jet (APPJ) method was investigated by using a reciprocating pin-on-disk tribo-tester. The results showed that the wear and friction of the ZnO coatings could be significantly improved by doping with indium. The wear rate of the ZnO coating decreased from about 82 μm3/cycle to almost an undetectable amount when 2.2 at% indium was included in the coating. The friction coefficient of ZnO coating also decreased from 0.6 to 0.17 with inclusion of 2.2 at% indium. However, further increase in the indium content led to increase in the friction and wear of the coating. This outcome was attributed to the relatively high value of coating/substrate hardness ratio. Overall, APPJ method proved to be an effective method to deposit ZnO coatings with an optimum amount of indium concentration for wear protection of acryl substrates without compromising the optical transmittance of the coating.
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Keywords: ATMOSPHERIC PLASMA JET; COATINGS; FRICTION; POLYMER; WEAR; ZNO

Document Type: Research Article

Publication date: January 1, 2015

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  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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