Low energy SIMS characterisation of ultra thin oxides on ferrous alloys

Determination of Solubility of Chromium Oxide in the CaO–SiO₂–Cr₂O₃ Slag System at 1873 K under Moderately Reducing Conditions

“…It is well known that stainless steel is a typical iron-based alloy containing Cr, causing the formation of a protective and invisibly thin film of Cr 2 O 3 on the steel surface, which induces high corrosion resistance. [1][2][3] The production process of stainless steel can be divided roughly into two steps, namely the melting of scrap and ferroalloys in an electric arc furnace (EAF) and a refining process aimed at adjusting the carbon content and removing other impurities. [4][5][6] Considering that Cr has a strong affinity for oxygen, it is challenging to decarburize stainless steel to a sufficiently low carbon level during the typical refining process while preventing the loss of Cr into the slag caused by the preferential oxidation of Cr.…”

The effect of surface treatment with atmospheric pressure plasma jet, generated by air, on corrosion properties of AISI 304L stainless steel

“…The data show also clearly that the plasma treatments induced an oxidation of the surface and the one carried out at the lower velocity (v1) allowed the formation of a thicker oxide film. The native passive film of the untreated sample measures about 1 nm, a characteristic value for this type of stainless steel [16], while it is 5 nm for the v1 plasma treated sample and 4 nm for the v2 plasma treated sample. The thickness was estimated as a depth at which the oxygen concentration dropped to 50% of its maximum value.…”

“…It has been demonstrated that the native oxide film formed on FeeCr alloys is strongly related to the alloy composition and that a critical composition exists corresponding to a change in the oxide chemistry [16]. Several studies regarding the 304 series SS have evidenced that i) the native passive layer is formed principally by iron and chromium, with chromium situated in the inner zone of the layer, ii) nickel is less prone to be oxidised and it has been found at the interface between the passive film and the substrate [17].…”

Development of resistance to 5-fluorouracil affects membrane viscosity and lipid composition of cancer cells

“…Bolbach et al showed that lipid bilayer deposited by Langmuir-Blodgett technique above target lipid reduced the target lipid signal by one order of magnitude [46]. This property provides high depth resolution that allows to resolve fine structures of samples like oxide films [47] or semiconductor quantum dots [48] a few nm thick. For experiments on cultured cells, shallow sampling depth helps to restrict the analysis to plasma membranes avoiding potential complications caused by the detection of contamination signals of intracellular membranes [49].…”