The corrosion inhibition effect of phytic acid on 20SiMn steel in simulated carbonated concrete pore solution

Cao, Fang; Wei, Jie; Dong, Jie; Ke, Wei

doi:10.1016/j.corsci.2015.08.020

Cited by 88 publications

(34 citation statements)

References 49 publications

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“…As is reported, it costs more than 20 billion dollar to repair and rehabilitate the highway and bridges annually in the USA and more than 600 million pound in the UK . Application of rebar inhibitors during the concrete casting process is considered to be one of the most effective and economical solutions to suppress the corrosion of reinforcement and has been used in more and more countries . It is reported that there was 20 million m 3 concrete applying of corrosion inhibitors world‐wide in 1993, but the number was increased to more than 500 million by 1998, and now the number is still increasing .…”

Section: Introductionmentioning

confidence: 99%

pH‐sensitive polymeric particles as smart carriers for rebar inhibitors delivery in alkaline condition

Feng

Yang

Dong

et al. 2017

J of Applied Polymer Sci

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The waste problem of the rebar inhibitors is very serious due to that it is a long time before they can exert their best effect in the concrete and they are kept losing all the time. However, there is still no effective solution to alleviate such situation. Meanwhile, drug delivery control technology based on environmental sensitive polymers has been successfully applied in biomedical fields. Thus, poly(acrylic acid)–acrylamide was synthesized as smart carrier for controlling rebar inhibitors delivery in concrete. Dipotassium hydrogen phosphate as model drug was encapsulated inside the polymeric particles via a self‐assembly process. The pH‐responsive activities of the polymeric particles were estimated by monitoring their swelling performances in solutions of different pH values and the drug delivery control characteristics were studied in simulated concrete pore solutions. The results indicate the polymeric particles deserve network structures with high porosity and exhibit excellent pH‐responsive activities, which can perform as perfect intelligent carriers whereas the releasing of the inhibitors follows the first‐order kinetic law. The work suggests a new application field of drug delivery control technology. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45886.

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Section: Introductionmentioning

confidence: 99%

pH‐sensitive polymeric particles as smart carriers for rebar inhibitors delivery in alkaline condition

Feng

Yang

Dong

et al. 2017

J of Applied Polymer Sci

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“…In order to make the NaPhA efficiency increase with its concentration, the solution pH had to be increased to 9.2. It is no coincidence that later it was found to manifest protective properties toward steel in concrete pore liquid [18]. Moreover, its Ca and Mg salts were found to be more efficient than the acid itself or NaPhA in inhibiting the corrosion not only of Cu but also of brass [16].…”

mentioning

confidence: 99%

Organic corrosion inhibitors: where are we now? A review. Part III. Passivation and the role of the chemical structure of organophosphates

2017

Int. J. Corros. Scale Inhib.

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This article continues the review of studies (2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014)(2015)(2016) dealing with the passivation of various metals by solutions of organic corrosion inhibitors. It provides an overview of papers on the passivating properties of organophosphates, their complexes and salts. The results of corrosion and electrochemical studies, as well as studies on the composition and structural features of surface layers on metals by a variety of physicochemical methods are considered. Organic phosphorus compounds are often called organophosphates, especially in the case of pesticides and even toxic agents. Of course, it is unlikely that such materials have application prospects for the inhibition of metal corrosion. That is why in this series of reviews we consider organophosphates in a narrower sense limited to phosphoric acid esters and their salts, as well as phosphonic acids, their salts or complex compounds with metal cations [1][2][3][4]. The easy synthesis of acid esters of phosphoric acid, the stability of mono-and disubstituted ester anions, their ability to form complexes and hydrophobic passive films on oxidized metal surfaces has been known for a long time [1]. They can be used for the passivation of phosphated metal surfaces, and their salts with amines are used within deicing formulations. These salts can inhibit not only corrosion but also formation of deposits, so they are used in two-phase systems in the oil industry. Since higher homologues are more effective, the solubility of alkylphosphonic acids is commonly increased by ethoxylation. Salts of these acids are used in cooling lubricants, e.g., waterbased cutting fluids. The low toxicity, ability to be chemisorbed on a metal surface, and some useful technological properties of acid esters of phosphoric acid continue to motivate researchers to look for effective corrosion inhibitors of various metals among these compounds and to study their protection mechanisms [5][6][7][8][9][10][11][12][13][14]. Key words: metal corrosion, inhibitors, metal passivation, organophosphates.

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“…n ¼ 0, CPE is a pure resistance; n ¼ 1, it is a pure capacitance; n ¼ 0.5, it is a Warburg component; n ¼ À1, it is an inductor. [59][60][61] Therefore, the real part (Z re ) and imaginary part (Z im ) of the impedance of the impedance can be expressed as:…”

Section: Electrochemical Impendence Spectroscopy (Eis)mentioning

confidence: 99%

Experimental and theoretical investigation on corrosion inhibitive properties of steel rebar by a newly designed environmentally friendly inhibitor formula

et al. 2018

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The corrosion inhibition effect of phytic acid on 20SiMn steel in simulated carbonated concrete pore solution

Cited by 88 publications

References 49 publications

pH‐sensitive polymeric particles as smart carriers for rebar inhibitors delivery in alkaline condition

pH‐sensitive polymeric particles as smart carriers for rebar inhibitors delivery in alkaline condition

Organic corrosion inhibitors: where are we now? A review. Part III. Passivation and the role of the chemical structure of organophosphates

Experimental and theoretical investigation on corrosion inhibitive properties of steel rebar by a newly designed environmentally friendly inhibitor formula

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