Effects of laser-induced oxidation on the corrosion resistance of AISI 304 stainless steel

Abstract

The paper presents an analysis of the impact of oxide layers, manufactured by means of laser radiation (with varying energy densities), on the resistance of AISI 304 stainless steel to corrosion. Corrosion resistance tests have been carried out in a weakly acidic environment (H2SO4, pH = 3.5) and a neutral environment (NaCl, pH = 7). The experiment was performed with the use of a laser system equipped with the Ytterbium Yb3+ fiber laser with a pulse duration of 230 ns. It has been shown that the thermal-oriented laser process significantly affects the course and nature of cathode-anode processes occurring on the surface of irradiated materials. Compared to the unstructured reference samples, there has been a significant increase in corrosion resistance of AISI 304 steel in the range of laser fluence between 50 and 70 J/cm2. The Energy-dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy analyses of the chemical composition of the surface of the samples as well as the change of their morphology (microcracks of oxide layers) are closely correlated with the electrochemical measurements. Corrosion intensity has also been specified as a function of the energy density used for the laser marking of the samples.

Laser-Induced Mesoporous Nickel Oxide as a Highly Sensitive Nonenzymatic Glucose Sensor

“…61 Laser-induced metal oxidation techniques have been widely used as standard surface modification approaches to improve corrosion resistance of metallic structures. 62,63 Recent efforts have also utilized the unique nanotextures created by the LIO process on metal surfaces for applications in large surface area periodic plasmonic structures. 59 Moreover, LIO processes can provide the unique ability to precisely control the thickness of the created oxide layer on the metal surfaces.…”

“…This simple technique is reported to be applied on a wide range of materials for different applications. , For instance, laser-induced oxidation (LIO) of the silicon film has been performed to improve silicon wafer solar cells’ performance by increasing its effective surface area . Laser-induced metal oxidation techniques have been widely used as standard surface modification approaches to improve corrosion resistance of metallic structures. , …”

Corrosion Resistance of AISI 304 Stainless Steel Modified Both Femto- and Nanosecond Lasers

“…As it is commonly known, the formation of an oxide layer on the surface of the material is not only a function of the applied process parameters, but also the initial state of the surface of the modified material. However, the mutual interaction of two techniques, one of which (ns-laser), in accordance with our previous research [9], was optimized to obtain the highest corrosion resistance, and the other technique allowing the maximum development of the effective surface of the material by producing periodic structures (LIPSS) with a fs-laser, which should have a negative impact on corrosion resistance, did not allow for the formulation of a predictable result. The obtained results should help to better understand how the laser interaction modifies the corrosion of stainless steel.…”

A contrastive investigation on anticorrosive performance of laser-induced super-hydrophobic and oil-infused slippery coatings

“…In terms of the initial laser-processing surface and the pristine surface with silicon oil, they presented similar positive shifts of corrosion potential and decreased trends of corrosion current density compared with the pure stainless steel, showing an improvement of corrosion resistant behavior. Previous report proved that the oxidation layer (Fe 2 O 3 and Gr 2 O 3 ) formed during the laser ablation treatment could inhibit the corrosion reactions for the laser-processing surface [46]. Furthermore, as an insulating layer, the silicon oil coating on the pure 316L surface can also improve the corrosion resistance to certain degree.…”