Topic
Pickling
About: Pickling is a research topic. Over the lifetime, 9836 publications have been published within this topic receiving 37616 citations. The topic is also known as: pickle.
Papers published on a yearly basis
1 / 3
Papers
TL;DR: In this paper, the main examples of organic inhibitors recommended to protect metallic materials, especially ferrous metals and alloys, from corrosion in hydrochloric, sulphuric, nitric, hydrofluoric, phosphoric, sulphamic, citric, acetic, hydroxyacetic or formic acid or ammonium bifluoride, during acid pickling, scale removal, acid cleaning or oil and gas well acidizing, are discussed with respect to the individual problems connected with the technical applications of these various kinds of acid treatment.
Abstract: Prominent examples of inhibitors recommended to protect metallic materials, especially ferrous metals and alloys, from corrosion in hydrochloric, sulphuric, nitric, hydrofluoric, phosphoric, sulphamic, citric, acetic, hydroxyacetic or formic acid or ammonium bifluoride, during acid pickling, scale removal, acid cleaning or oil and gas well acidizing, are discussed with respect to the individual problems connected with the technical applications of these various kinds of acid treatment. The structures of organic inhibitors are given including N-containing compounds (amines, Mannich bases, alkynoxymethylamines, ammonium compounds heteroaromatics, oximes, nitriles, nitro compounds), acetylenic alcohols, S-containing compounds (mercaptans, thioethers, sulphonium compounds, sulphoxides, thioureas, thiocyanates, heteroaromatics, etc.) and complexones.
519 citations
TL;DR: In this article, the effect of 3,5-bis(2-thienylmethyl)-4-amino-1,2,4-triazole (2-TMAT) was studied by electrochemical impedance spectroscopy (EIS) and polarization techniques.
433 citations
TL;DR: In this article, the surface properties of commercially pure titanium and its alloys were investigated following three different pretreatments: polishing, nitric acid passivation and pickling in nitric acids-hydrogen fluoride.
Abstract: The biocompatibility of commercially pure titanium and its alloys is closely related to their surface properties, with both the composition of the protecting oxide film and the surface topography playing an important role. Surfaces of commercially pure titanium and of the two alloys Ti-6Al-7Nb and Ti-6Al-4V (wt %) have been investigated following three different pretreatments: polishing, nitric acid passivation and pickling in nitric acid-hydrogen fluoride. Nitric acid treatment is found to substantially reduce the concentration of surface contaminants present after polishing. The natural 4-6 nm thick oxide layer on commercially pure titanium is composed of titanium oxide in different oxidation states (TiO2, Ti2O3 and TiO), while for the alloys, aluminium and niobium or vanadium are additionally present in oxidized form (Al2O3, Nb2O5 or V-oxides). The concentrations of the alloying elements at the surface are shown to be strongly dependent on the pretreatment process. While pickling increases the surface roughness of both commercially pure titanium and the alloys, different mechanisms appear to be involved. In the case of commercially pure titanium, the dissolution rate depends on grain orientation, whereas in the case of the two alloys, selective alpha-phase dissolution and enrichment of the beta-phase appears to occur.
329 citations
TL;DR: In this paper, the effects of 2-amino-5-ethylthio-1,3,4-thiadiazole (AETD) on copper corrosion as a corrosion inhibitor in an aerated acidic pickling solution of 0.50 m HCl have been investigated using gravimetric and electrochemical techniques.
257 citations
TL;DR: In this article, an attempt is made to study the mechanism of adsorption by using the concept of π-scale of potential as proposed by Antropov, and the potential of zero charge of mild steel is studied by two different techniques.
Abstract: Generally, aromatic amines are regarded as effective inhibitors for pickling and acid cleaning of mild steel in hydrochloric acid. Most previous studies advocate the view that the inhibition is a result of adsorption of the π-electron cloud of the aromatic ring on the iron and steel surface through vacant dπ orbital of iron. Later studies indicate a possible electrostatic adsorption or chemisorption due to synergistic action between halide ion and amine molecules as responsible for inhibition. In this paper, an attempt is made to study the mechanism of adsorption by using the concept of π-scale of potential as proposed by Antropov. The potential of zero charge (PZC) of mild steel is studied by two different techniques, and the mechanism of adsorption thus predicted has been found to corroborate the results of in situ Raman scattering study.
245 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2025 | 32 |
| 2024 | 70 |
| 2023 | 105 |
| 2022 | 163 |
| 2021 | 109 |
| 2020 | 402 |