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To minimize the frictional losses and wear of piston rings in an automotive engine, thick low friction TiSiCN nanocomposite coatings have been developed. The coatings were deposited by sputtering titanium targets in argon, nitrogen, hexamethyldisilazane (HMDSN), and acetylene (C2H2) using plasma enhanced magnetron sputtering (PEMS). The substrates were AISI 304 stainless steel coupons and piston rings...
The tribological properties of a diamond (111) pin slid on subnanometer thick Ag films, which were deposited on a cleaned Si(111) substrate, were studied using a pin-on-plate tribometer. The preparation of Ag ultrathin films and frictional experiments were performed in an ultrahigh vacuum (UHV) chamber at a pressure of 10 -8 Pa. The frictional experiments were carried out at a sliding...
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