Modelling of abrasive wear of ni-based self-fluxing alloy coatings by the application of experimental design

Abstract

© 2016, Strojarski Facultet. All rights reserved. In this paper resistance to abrasive wear is studied of the Ni-based self-fluxing alloy coatings deposited by flame spraying with fusion. The "dry sand/rubber wheel" test in accordance with the ASTM G65 norm, specifically B and C procedures is used. The experimental data are statistically processed by using analysis of variance, to investigate the influence of two input variables (type of coating: NiCrBSi, NiBSi; spraying distance: smaller, greater) and their interaction on the output variable (volume loss). Data for investigation were obtained by the full factorial design with two, previously mentioned, factors at two levels with three replications. The analysis of variance of obtained experimental data after 100 revolutions of wheel has shown that type of coating, spraying distance as well as interaction between these factors are significant and affect abrasive wear. At 2000 revolutions of wheel it has been found that the type of coating is a significant factor while the spraying distance, the same as interaction between these factors, is of no significance to abrasive wear.