Nanocomposite carbon- or MoS2-based selflubricating coatings for automotive, aviation and spacecraft industries
Bogdan Wendler, Tomasz Moskalewicz, Dariusz Rudnik, Sławomir Zimowski, Marcin Kot, Marcin Grobelny, Wojciech Pawlak, Adam Rylski, Aleksandra Czyrska-Filemonowicz, Marcin Makówka, Piotr Nolbrzak, Katarzyna Włodarczyk
Quarterly No. 1, 2013 pages 52-58
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abstract Higher performance and reliability, reduced fuel and lubricant consumption as well as a greater solicitude to the earth's environment are nowadays the main driving forces of progress in contemporary automotive, aviation and spacecraft industries. Among the effective solutions of these issues are friction reduction in the powertrains of vehicles as well as mass reduction of engines by means of the replacement of steel parts of engines or other mechanisms by twice lighter ones made from titanium alloys. In the paper, basic information concerning the manufacturing of two types of thick carbon or MoS2-based friction reducing nanocomposite coatings is given and part of the characterization results concerning their microstructure, mechanical and tribological properties as well as the corrosion resistance of nanocomposite nc-WC/a-C and MoS2(Ti,W) coatings deposited by magnetron sputtering onto Vanadis 23 HS steel and hardened Ti6Al4V titanium alloy substrates are presented and discussed. The work was accomplished by an interdisciplinary team of researchers from AGH University of Science and Technology in Krakow, the Motor Transport Institute in Warsaw and of the Lodz University of Technology in the frame of the POIG project KomCerMet (Workpackage KCM3) financed by the Ministry of Science and Higher Education of Poland. Keywords: nanocomposites, coatings, nc-WC/a-C, MoS2, nanostructure, dry friction, resistance to corrosion & wear, protection against galling