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CHROMIUM-RICH COATINGS WITH WS_2 NANOPARTICLES CONTAINING FULLERENE-LIKE STRUCTURE
O. EIDELMAN,H. FRIEDMAN,R. ROSENTSVEIG,A. MOSHKOVITH,V. PERFILIEV,S. R. COHEN,Y. FELDMAN,L. RAPOPORT,R. TENNE 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2011 NANO Vol.6 No.4
In this work chromium-rich coatings impregnated with fullerene-like (IF)-WS2 nanoparticles were deposited on stainless steel substrates. The coatings were obtained from a trivalent chromium bath at pH 2 by galvanostatic electrodeposition. Zinc and cobalt salts were added to the aqueous solution in small amounts serving as cationic growth promoters. Photodeposition of tin-palladium nanoparticles was used as seeding enhancer for the co-deposition of the fullerene-like nanoparticles. The coatings were characterized by a number of techniques and were found to show a decreasing gradient of the IF nanoparticles towards the film-substrate interface. Tribological tests showed that in contrast to the substrate and the pure metal coating, the IF-containing films exhibit low friction and wear.