Investigation of morphology changes on nanocrystalline diamond film surfaces during reciprocating sliding against Si3N4 ballsBogatov, Andrei; Podgurski, Vitali; Raadik, Taavi; Kamjula, A. R.; Hantschel, Thomas; Tsigkourakos, M.; Kulu, PriitEngineering materials & tribology XXII2014 / p. 126-129 Nanocrystalline diamond films deformation observed during sliding tests against Si3N4 balls as a possible cause for ripple formation on wear scars surfaceBogatov, Andrei; Viljus, Mart; Raadik, Taavi; Hantschel, Thomas; Podgurski, VitaliMedžiagotyra = Materials science2015 / p. 349-352 : ill http://dx.doi.org/10.5755/j01.ms.21.3.7232 Rippling on wear scar surfaces of nanocrystalline diamond films after reciprocating sliding against ceramic ballsPodgurski, Vitali; Hantschel, Thomas; Bogatov, Andrei; Kimmari, Eduard; Antonov, Maksim; Viljus, Mart; Mikli, Valdek; Raadik, Taavi; Kulu, PriitTribology letters2014 / p. 493-501 : ill