Relationship of roughness of abrasively worn out surfaces to abrasive resistance of metal materials
1999
Tolnai, R. | Cico, P. (Slovenska Polnohospodarska Univ., Nitra (Slovak Republic))
The evaluation of surface morphology enabled to explain the mechanism of degrading processes under defined conditions and helped at the selection of abrasion resistent materials. When studying the surface morphology the authors also devoted their attention to the roughness of abrasively worn out surfaces and pronounced the hypothesis concerning the possibility to utilize the roughness of the worn out surface as comparative criterion for the asessment of material resistance against wear. Laboratory wear tests of steels with austenitic, ferritico-perlitic, ferritico-sorbitic and martnesitic structures and of alloyed white cast iron were performed to prove the validity of the hypothesis. It is substantialy possible to state on the basis of the result evaluation that the hypothesis was proved and to accept the roughness of worn out surfaces as the criterion of wear resistance. The pressure increase on a surface undergoing abrasive degrading increases the surface roughness. Chemical influences during the abrasive wear process decrease the surface roughness.
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