Effect of soil compositions on the electrochemical corrosion behavior of carbon steel in simulated soil solution

Abstract

2 -, HCO 3 -, and NO 3 -can increase the corrosion density. All the above ions in the simulated soil solution can decrease its resistivity, but they have different effect on the charge transfer resistivity. This finding can be useful in evaluating the corrosivity of certain soil through chemical analysis, and provide data for construction engineers.

Experimental Investigation on Corrosion Effect on Mechanical Properties of Buried Metal Pipes

“…For internal corrosion, depending on the substance to be conveyed in the pipe, various factors, including microbial effects, can cause corrosion [16], whereas external corrosion is mainly due to corrosive chemicals in soil [17]. Pipe corrosion in soil is an interaction between the pipe materials and the soil environment [18]. There are several stimulating factors that lead to the pipe external corrosion in soil environment [5,19].…”

Electrochemical and characterisation study of corrosion of reinforcing steel embedded in kaolinite: two-year exposure study

“…The increase could be explained by the depassivation of steel bars by ions such as and which allows greater diffusion of oxygen towards the steel surface [43]. The effect of the ions, , , and existing in the electrolyte (tap water), and which promotes the corrosion mechanism, can also be added as a factor for the increase in [44]. After this stage, was found to decrease and to stabilise at average values around 0.2 μA cm −2 indicating a low corrosion rate [42].…”

“…Most of these corrosion species are familiar corrosion products in the corrosion of steel in soil and clays [7,8,49]. High-resolution XPS spectra of O1s at the three etching times (0 s, 120 s and 720 s) were deconvoluted into two peaks of binding energy, the first peak is corresponding to at 531.8 eV, the other peak corresponding to at 530.5 eV [23 50].

Figure 13 High-resolution XPS spectra of Fe2p 3/2 and O1s performed on the corrosion product layer at 0 s, 120 s and 720 s etching time.

Figure 13 Continued

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Microbiologically influenced corrosion: a review of the studies conducted on buried pipelines

“…One approach is to make a solution by adding distilled water to soil samples and sieving out the solid particles (Cunha Lins et al 2012;Wasim et al 2017;Wu et al 2014aWu et al ,b, 2016Xu et al 2011). Another approach is to add minerals to distilled water to match the mineral levels measured in soil samples or a hypothetical soil/mineral ratio (Benmoussat and Traisnel 2011;Liu et al 2010Liu et al , 2019Maocheng et al 2016;Starosvetsky et al 2016;Wade et al 2017;Wan et al 2018Wan et al , 2019Wu et al 2010). In some cases where the focus is on groundwater as the corrosive element of the environment, solutions are designed to match the groundwater in the area of study and potential effects of the soil itself is discounted (Schütz et al 2015;Sherar et al 2011).…”