On the passivation of iron in aqueous solutions of zinc 1-hydroxyethane-1,1-diphosphonate

Kuznetsov, Yu. I.; Zinchenko, G. V.; Kazanskii, L. P.; Andreeva, N. P.; Makarychev, Yu.B.

doi:10.1134/s0033173207070065

Cited by 7 publications

(2 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Reduction of such additives generates an excess of OH − anions [7,146,147]. In [146,[175][176][177], the possibility of enhancing the inhibiting properties of HEDP and ATMP complexes with Me 2+ toward low-carbon steel in hot (80 • C) highly mineralized water by small additions of NaNO 2 and sodium m-nitrobenzoate (m-SNB) was shown. It was found that the oxidizer plays an auxiliary role in the formation of a protective film on the steel surface by the main component of the mixture, namely, phosphonate.…”

Section: Phosphonic Acids and Phosphonatesmentioning

confidence: 99%

Thin Protective Coatings on Metals Formed by Organic Corrosion Inhibitors in Neutral Media

Kuznetsov

Redkina

2022

Coatings

View full text Add to dashboard Cite

Protection of metals in neutral media with pH 5.0–9.0 (in humid atmospheres and various aqueous solutions) can be achieved by formation of thin coatings (up to several tens of nm) on their surfaces due to adsorption and more complex chemical interactions of organic corrosion inhibitors (OCIs) with the metal to be protected. The review contains three sections. The first section deals with coatings formed in aqueous solutions, while the second one, with those formed in organic and water-organic solvents. Here we consider metal protection by coatings mainly formed by the best-known classes of OCI (carboxylates, organophosphates and phosphonates) and estimation of its efficiency. The third section discusses the peculiarities of protection of metals in the vapor-gas phase, i.e., by volatile OCIs, and a relatively new type of metal protection against atmospheric corrosion by the so-called chamber inhibitors. OCIs with relatively low volatility under normal conditions can be used as chamber OCIs. To obtain a protective coating on the surfaces of metal items, they are placed in a chamber inside which an increased concentration of vapors of a chamber OCI is maintained by increasing the temperature. This review mainly focuses on the protection of iron, steels, copper and zinc.

show abstract

Section: Phosphonic Acids and Phosphonatesmentioning

confidence: 99%

Thin Protective Coatings on Metals Formed by Organic Corrosion Inhibitors in Neutral Media

Kuznetsov

Redkina

2022

Coatings

View full text Add to dashboard Cite

show abstract

“…[19] Potentiodynamic polarization studies clearly revealed the type of the inhibitor. The addition of increasing concentrations of phosphonic acids caused a shift of the pitting potential (E pit ) in the positive direction, indicating the inhibitive effect of the added phosphonic acid on the pitting attack.…”

mentioning

confidence: 98%

Structural Mapping of Hybrid Metal Phosphonate Corrosion Inhibiting Thin Films

Papadaki

Demadis

2009

Comments on Inorganic Chemistry

View full text Add to dashboard Cite

The constant growth in the area of metal phosphonate materials is exemplified with rich chemistry and a variety of applications. From the multitude of subjects related to metal phosphonates, we have decided to focus on metal phosphonate coordination polymers as corrosion inhibitors in the present Comment. A plethora of metal phosphonate organic-inorganic polymeric hybrid materials have been synthesized, structurally characterized, and evaluated for their anticorrosion properties for the protection of carbon steels. These materials are composed of a metal ion (usually Zn 2þ , Ca 2þ , Sr 2þ , Ba 2þ , etc.) and polyphosphonate ligands such as AMP (amino-tris-(methylenephosphonate) and HDTMP (hexamethylenediaminetetrakis(methylenephosphonate), or carboxyphosphonate ligands, such as PBTC (2-phosphonobutane-1,2,4-tricarboxylate) and HPAA (hydroxyphosphonoacetate). Their corrosion inhibition performance has been evaluated and some interesting conclusions are drawn relating molecular structure to inhibitory activity.

show abstract