Rippling on Wear Scar Surfaces of Nanocrystalline Diamond Films After Reciprocating Sliding Against Ceramic Balls

Growth dynamics of nanocrystalline diamond films produced by microwave plasma enhanced chemical vapor deposition in methane/hydrogen/air mixture: Scaling analysis of surface morphology

“…The NCD films can be prepared in a pure form, i.e. with a small fraction of non-diamond carbon [3], as well as with a composite structure of diamond grains embedded in an amorphous carbon matrix [5,[7][8][9][10]. NCD grown with high methane concentration may contain as much as 50% non-diamond carbon [6].…”

“…The diamond film structure can be effectively controlled from micro to nanocrystalline by adding nitrogen and oxygen in the CH 4 /H 2 gas mixture [8,11]. The NCD films with composite structure possess often characteristic irregular cauliflower-like surface morphology [5][6][7][8][9][10]. In general, the diamond grain growth can be described by chemical reactions involving radicals (CH x ) and free hydrogen atoms (H) [12].…”

Effect of sliding mating materials on vacuum tribological behaviors of sintered polycrystalline diamond

“…Previous study has reported that the hardness of mating materials has an enormous effect on the wear behaviors of diamond materials [23,29,30]. Liu et al [30] investigated the tribological properties of DLC films against both hard and soft mating materials and found that the harder the sliders, the lower their wear rates.…”

Effect of Nanocrystalline Diamond Films Deflection on Wear Observed in Reciprocating Sliding Tests

“…The mostly influential factors affecting tribological performance of diamond films are as follows: anisotropy of mechanical and tribological properties [4,5], formation of amorphous carbonaceous lubricating tribolayer [6,7], ambient atmosphere [8,9], surface morphology [10,11], etc. Our previous studies [12][13][14][15] have reported the formation of morphological patterns on the wear scar surfaces including ripples and grooves after reciprocating sliding tests on nanocrystalline diamond (NCD) and microcrystalline diamond (MCD) films deposited on Si (100) substrates. In the context of the present study, it is worth mentioning that the ripples were already found during run-in period [12,14,15].…”

“…Our previous studies [12][13][14][15] have reported the formation of morphological patterns on the wear scar surfaces including ripples and grooves after reciprocating sliding tests on nanocrystalline diamond (NCD) and microcrystalline diamond (MCD) films deposited on Si (100) substrates. In the context of the present study, it is worth mentioning that the ripples were already found during run-in period [12,14,15]. Among other effects, the morphological adaptation of the contacting surfaces of the tribosystem occurs at this friction stage [16].…”