Volume 42, Issue 2

Stainless steels are used extensively in semiconductor manufacturing as chamber, structure component and gas delivery systems. The corrosion in the aggressive gas in the semiconductor manufacturing industry leads to particle release, contaminating wafers and limiting their application. Moisture content can accelerate the corrosion rate of stainless steel. In a high-temperature environment, the corrosion is determined by the synergistic effect of the vapour of the corrosion product and thermal ageing. To eliminate corrosion, lots of efforts have been performed and categorized into three aspects: (1) Material purification using innovating metallurgy techniques, especially vacuum induction melting (VIM) and vacuum arc remelting (VAR). The ultra-pure stainless steel minimizes the inclusion in stainless steel, suppressing the breakdown of the passive film. (2) Smoothing the surface by polishing; the polishing surface shows hydrophobic behaviour and decreases moisture absorption. (3) Applying surface and coating techniques against corrosion, including passivation treatment and electroplating/electroless Ni-based coating. Herein, the techniques mentioned above are reviewed, and the prospect and development of stainless steel in the semiconductor manufacturing industry are forecasted.

The surface treatment of metallic implants is significant for their in-vivo performance. Biocompatible coatings play a crucial role in corrosion protection and other practical uses of biomedical devices to evade surgery failure and enhance their functions. Polydopamine (PDA), a mussel-inspired synthetic polymer, exhibits high potential as an adhesive middle layer to enhance the bonding at the interface between the metal substrate and coating materials and used for corrosion protection of the implants. Owing to its excellent biocompatibility along with unique drug loading perspective, several PDA-modified nanoparticles have also been preferred as drug carriers. This featured article is dedicated to summarizing the significance of PDA as a coating material for clinical applications. It was begun by describing the polymerization process of dopamine and then describes the PDA as an effective coating material for corrosion protection of implants with proposed mechanism. The beneficial effects of PDA containing coatings on corrosion protection of implants were also discussed. Next, was focused on PDA-modified nanostructures and emphasized the biocompatibility of PDA. The latest developments of PDA modified coatings/nanoparticles in advanced drug delivery applications were also discussed.

The extracts of different parts of plants (leaf, stem, and flower) act as a green, environmentally friendly, economical, and safe corrosion inhibitors. The eco-friendly extracts of plant material provide an excellent alternative that substitutes toxic traditional (organic and inorganic) corrosion inhibitors. The plant extracts are renewable and readily available; thus, they occupy a unique position in the family of green inhibitors. The plant extract contains several bioactive compounds, such as flavonoids, tannins, polyphenols, phenolic acids, glycosides, flavonols, etc., which possess experienced significant interest as anti-corrosive agents. These plant extracts contain several heteroatoms like phosphorus, nitrogen, sulfur, oxygen, etc., which are adsorbed on the metallic surface and form an inert protective layer that protects metal from a corrosive environment. Thus, this article aims to shed light on the efficiency of plant extract in protecting steel in an acidic environment.

Biocides are used to prevent microbiologically influenced corrosion (MIC), which damages and disables metal structures. However, biocides can make microorganisms resistant and contaminate the environment. Some studies have found that magnetic fields have an inhibitory effect on MIC, providing a new way of thinking for MIC control. In this paper, the current research status of MIC is discussed for typical anaerobic sulfate-reducing bacteria (SRB), the MIC of different metals in different environments is summarized, and the corrosion mechanism of SRB on metal structures, including cathodic depolarization and metabolite corrosion, is introduced. On this basis, the research progress of metal corrosion under magnetic field and microbial conditions in recent years is summarized, and discussed from three aspects, namely, electrochemical corrosion, SCC, and microbial corrosion, respectively. The corrosion process of microorganisms on metals in magnetic field is summarized, including biofilm theory, ion interference theory, free radical theory, and so on. Finally, the prevention and control of microbial corrosion by magnetic fields are prospected using the relevant mechanisms of magnetic field corrosion on metals.

The changing supply and demand of hydrocarbons in recent years, generated by inflation, pandemics, and wars, have impacted its price considerably, developing limitations in maintenance processes in the oil industry worldwide; however, the mechanical deterioration of facilities due to corrosion does not stop. This article contributes original to the knowledge and management of a pipeline transportation system (PTS) without an immediate high impact that would help reduce property loss due to corrosion through the development of intelligent evaluation models that combine field data, laboratory, and cognitive knowledge in a case study in Mexico. The research is divided into Part 1 (Modeling; https://doi.org/10.1515/corrrev-2021-0080) and Part 2 (Operational and economic risk analysis of PTS under corrosive effects, using Monte Carlo simulation, MCS), supported by information and knowledge of 564 km of soils, from cathodic protection studies, essential to determine corrosive profiles of the PTS, considering supply and demand effects, with 1095 data on the price of the Mexican mixture from 2016 to 2019, as well as data monthly inflation rates for the same period, to generate financial estimates representative of the system, in search of replicable exchange actions and practices in international fields.

We have employed first principles DFT calculation with van der Waals (vdW) corrections to investigate the adsorption mechanism of thiazolidine-2,4-dione (TZD) substituted by 4-methylbenzylidene (MTZD) at 5-position and by an additional allyl group (ATZD) at 3-position on copper oxide surface (Cu 2 O(111)). Parallel configurations were found the most energetically stable geometries. The adsorption binding energy magnitudes predicted that ATZD outperformed MTZD by −0.11 eV. Our calculations indicated that O and S atoms of thiazolidine-2,4-dione nucleus significantly enhanced the chemical bonding of ATZD and MTZD with Cu 2 O(111) surface. Hydrogen bond interactions between Lewis base site at unsaturated O atom above the copper surface and TZD molecules are contributing to the stability of TZD molecules on Cu 2 O(111) surface. The adsorption induced-work function of different TZD adsorption configurations decreased from 4.563 eV (Cu 2 O(111)) to 4.114–4.373 eV due to electron transport between TZD molecules and Cu 2 O(111). The analysis of electronic properties of TZDs adsorption geometries revealed strong charge transfer and redistribution at the interface of TZDs-Cu 2 O(111), strengthening the stability of molecules on copper oxide surface. These theoretical insights would pave the way for further in-depth investigations into TZD-Copper interactions and provide valuable information for an optimized design of copper corrosion inhibitors.

It takes 3–5 years for the stable rust layer to form when the bridge weathering steel is used in the industrial atmosphere, and the loose rust layer appearing in the early stage will pollute the atmospheric environment. Therefore, a method for the rapid formation of stable rust layer is developed in this paper, and the influence of rust layer stabilizing treatment on corrosion behavior of bridge weathering steel Q345qNH in simulated industrial atmospheric medium is studied. The results showed that in simulated industrial atmospheric medium, the stabilizing treatment shortened the formation time of stable rust layer and significantly reduced the corrosion rate, which is 47.9 % lower than that of bare steel after 480 h of corrosion. During the whole corrosion process, the I α-FeOOH /I γ-FeOOH peak intensity ratio of the stabilizing treatment steel was always higher than that of the bare steel, and was 1.26 times that of the bare steel after 480 h corrosion. After the stabilizing treatment, the self-corrosion potential of the rust layer increases, the self-corrosion current density decreases, and the resistance of the rust layer after 480 h corrosion was 1.57 times that of the bare steel sample, and the protection of the rust layer was significantly improved.