Effects of viscosity and surface roughness on gear contact tribological layers

摘要: The increasing dependence on more robust additive chemistry to improve gear pitting resistance requires the technology development rely less a trial-and-error approach and better basic understanding of influence tribological contact layers' physical chemical changes. use secondary neutral mass spectrometry (SNMS) nanoindenter analyse layers had been carried out by Inacker co-workers at NMI. They found that alkyl structure zinc dithiophosphate (ZDTP) type cation have profound effect thickness nanohardness layer. An extension study has in this investigation, which involves design experiment two variables (oil viscosity surface roughness) while keeping constant determine their impact methods used include SNMS, SEM coupled with focused ion beam imaging rectangular well-shaped cross section. results general are agreement findings his co-workers, namely greater micropitting reduces layer brings closer depth maximum surface. Copyright © 2006 John Wiley & Sons, Ltd.