A New Phenomenon Observed in Determining the Wear-Corrosion Synergy During a Corrosive Sliding Wear Test

Abstract

Corrosive wear of materials is a complex surface failure process, which involves both the wearaccelerated corrosion and the corrosion-accelerated wear. Separating contributions of these two processes to the total material loss is of significance for gaining better understanding of the wear-corrosion synergy. Previous studies have generated an electrochemical scratch technique for measuring the wear-accelerated corrosion, based on which other components involved in the wear-corrosion synergy can be determined. In this article, a new phenomenon in measuring the wear-accelerated corrosion is reported. It was observed that for non-passivation materials there existed a stirring effect (by pin), which significantly affected the measurement. The resultant mistake was serious. The previous technique was modified accordingly and applied to determine the corrosion-wear synergy of AISI 1045 steel in comparison with that of AISI 304 stainless steel.

Analysis of the tribocorrosion mechanisms in a pin-on-plate combination on the example of AISI304 steel

“…The value of this parameter was determined in view of the complexity of numeric model (computation time), as well as the fact that the measured average distance between local peaks of asperity profile was 9 mm. The loss of the material caused by electrochemical processes was estimated assuming average valence of steel on the level of 3 [3,16,17].…”

Archives of Metallurgy and Materials

“…Many researchers in various centres [12][13][14][15][16][17][18][19][20][21] attempted to develop a model describing the process of tribocorrosion. The purpose of these activities was to reflect the main relationships between the process conditions and the wear of materials.…”

“…Examples of tribocorrosive damage to: A -teeth of chain drums used in mining, B -sections of conveyor routes; designation: 1 -wear zone [26] simultaneous actions of corrosive and mechanical factors. The necessity of developing predictive models (computer programs) is currently one of the main areas of the activity in the scope of studies on tribocorrosion [9][10][11][12][13][14][15][16][17][18][19][20][21].…”