Abrasion-Corrosion of Ferritic Stainless Steel

Abstract

Several studies have measured abrasion-corrosion for biomaterials, alloys, and stainless steel. Despite the considerable effort to understand the synergy between abrasioncorrosion resistance of stainless steel, they have mainly focused on more traditional materials, such as AISI 304 and AISI 316 stainless steel, and, more recently, on AISI 2205 duplex stainless steel. Little progress has been made to understand this phenomenon for cost-effective ferritic stainless steel. In this chapter, we first show the great potential of the use of ferritic stainless steel in the sugar cane biofuel industry. The influence of their crystallographic texture on the corrosion resistance of 16% Cr ferritic stainless steel (both niobiumstabilized and non-stabilized) is presented and discussed. We also analyses the microabrasion-corrosion performance of ferritic stainless steel with different chemical compositions (11%wt Cr with and without Ti stabilization; 16%wt Cr with and without Nb stabilization) and, for comparative purposes, austenitic stainless steel (18%wt Cr-8%wt Ni) and carbon steel (0.2%wt C). For all materials tested, microabrasion wear coefficients were higher (4x) than those measured under abrasion-corrosion conditions. Friction coefficients could also be measured by a 3D load cell strategically positioned in the specially developed microabrasioncorrosion device, showing a strong reduction (2x) in friction coefficient under abrasioncorrosion conditions when compared with solely abrasion conditions.

Effect of Al2TiO5 powder coating on the tribological, corrosion and mechanical properties of AISI 316L stainless steel

“…The micro-abrasion wear coefficient is higher than the abrasion-corrosion wear coefficient for AISI 316L steel. The friction coefficient is also observed to be lower under the same test conditions [1]. When the stainless steel bodies work against each other, pitting and spalling occur which cause crack opening that leads to surface fatigue issues [2,3].…”

Tribocorrosion in Ferritic Stainless Steels: an Improved Methodological Approach

“…This unstable behaviour of the friction coefficient during tribocorrosion testing resulted in a lower average friction coefficient compared to that obtained from the sliding wear tests (Figure 11). This discrepancy can be attributed to the electrochemical factors that generate corrosion products, which can act as solid lubricants in the contact area [8][9][10][11][12][13][14][15][16][17][18][19][20] , as recently demonstrated by Labiapari et al 7,21 under abrasioncorrosion conditions. For steels in sulfuric acid tribocorrosive systems, iron dissolves and the compound 2 4 Fe SO is formed on the metal surface according to Equation 1.…”

Brazilian Tribology: origin, status quo and future perspectives

“…Given the significance of the sugar-alcohol sector for Brazil´s economy and the great relevance of a pioneering paper [96], which introduced ferritic stainless steel as an anti-wear material, an intense collaboration between LTM and the largest Brazilian producer of stainless steel was consolidated. Initially, the effect of crystallographic texture and niobium stabilization on the corrosion resistance of ferritic stainless steel was studied [97], quickly giving way to a complete study encompassing abrasion-corrosion of stainless steels [98][99][100], which included the proposition of a new versatile instrument for the analysis of micro-abrasion corrosion [101] and methodological improvements [102][103][104]. Given the importance of the theme, its scope was naturally extended to sliding-corrosion (tribocorrosion) [105,106] and culminated with the application of the knowledge acquired applied to the optimization of life and sustainability of concrete mixer drums [107,108] The tribology of rolling mills rolls was another relevant contribution of LTM.…”