Surface physico-chemistry study of an austenitic stainless steel: Effect of simple cold rolling treatment on surface contamination

Plasma‐Mediated Modification of Austenitic Stainless Steel: Application to the Prevention of Yeast Adhesion

“…In the case of the reference procedure, the passive layer presented a thickness of 27 Å (Figure 3). This result was consistent with the findings of Houmard et al,25 reporting a thickness of 33 ± 6 Å. Table 4 indicates that the passive layer principally contained Fe and Cr oxides and hydroxides: the (Fe/Cr) ox ratio was equal to 0.95.…”

“…Its thickness was equal to 17 and 10 Å for conditions I and II, respectively (Figure 3). These values were similar to that determined by Houmard et al25 As expected, the argon‐plasma bombardment enabled the physical ablation of adsorbed contaminants through inelastic collisions between ions and surface atoms, which could overcome the chemisorption forces 10, 22, 42, 43. However, the presence of an organic contamination, with a major contribution of hydrocarbons, was still assessed (Table 3), certainly due to some prompt contamination at the reactor opening.…”

“…The presence of Si and C could also be due to polishing residues of the SiC grinding paper used. Furthermore, the significant occurrence of C and O was attributed to the environmental origin contamination layer 11, 25, 40. For each analysed sample, the C1s high resolution spectrum was decomposed into three components, confirming the presence of oxidized, hydrocarbon‐like species: an intense signal at 285.6 eV ascribed to carbon from CH and CC bonds, a shoulder at 287.2 eV from carbon in CO and CN, and one small peak at 289.6 eV corresponding to carbon in CO, OCO or OCO groups (see Figure 2 as an example).…”

“…In parallel, an argon plasma bombardment was added to the acetone/ethanol cleaning step, aiming at a physical ablation of the carbon contamination layer and an alteration of the chemical composition of the extreme surface, through inelastic collisions of argon ions with surface atoms 10, 25. Cold plasma processes are referred as efficient methods to modify the surface properties of substrates (polymers, ceramics, composites or metals), while preserving intact bulk properties 9, 26.…”

AES and FTIR characterization of sol–gel alumina films

“…8 to 11 that increasing the heat treatment temperature of composites enhances the atomic diffusion of Fe, Cr, and Ni into the alumina layer. Hourmard et al [32] investigated the surface physico-chemistry properties of stainless steel and the effects of a cold rolling treatment. They performed X-ray photoelectron spectroscopy analyses on rolled surfaces at different rates.…”