Author/Authors :
S.M. Pimenov، نويسنده , , A.A. Smolin، نويسنده , , E.D. Obraztsova، نويسنده , , V.I. Konov، نويسنده , , U. B?gli، نويسنده , , Lothar A. Blatter، نويسنده , , E.N. Loubnin، نويسنده , , M. Maillat، نويسنده , , Mauri A. Leijala، نويسنده , , J. Burger، نويسنده , , H.E. Hintermann، نويسنده ,
Abstract :
The friction and wear properties of smooth diamond coatings sliding against a monocrystalline ruby ball were studied using a pin-on-disk tribometer. The smooth diamond film surface was prepared either by (i) deposition of ultrathin nanocrystalline films in the thickness range from 0.2 to 2 μm or by (ii) postgrowth polishing. Excimer laser surface ablation, microwave plasma etching and mechanical lapping with diamond grit were used for postgrowth polishing. A correlation of film surface properties examined with different techniques (atomic force microscopy, Auger electron spectroscopy, Raman spectroscopy, stylus profilometry) and the tribological properties of the diamond films tested was established. The influence of laser-induced surface graphitization on the friction coefficient of laser-polished films was investigated.
