Preventing Internal Corrosion of Pipe Lines

Wachter, A.; Smith, Scott

doi:10.1021/ie50399a022

Cited by 12 publications

(7 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Most inhibitors have been developed by empirical experimentation, and many inhibitors are proprietary in nature and thus their composition is not disclosed. Inhibition is not completely understood because of these reasons, but it is possible to classify inhibitors according to their mechanism and composition [109][110][111][112][113][114][115][116][117][118][119][120][121][122][123][124][125][126][127]129]. …”

Section: Types Of Corrosionmentioning

confidence: 99%

“…Metals and alloys.The most common method of preventing corrosion is the selection of the proper metal or alloy for a particular corrosive service. Since this is the most important method of preventing or reducing corrosion damage[109][110][111][112][113][114][115][116][117][118][119][120][121][122][123][124][125][126][127].…”

mentioning

confidence: 99%

“…This category involves integral or solid nonmetallic construction (mainly self-supporting) and also sheet linings or coverings of substantial thickness (to different from paint coatings). The five general classes of nonmetallics are (1) rubbers, natural and synthetic; (2) plastics; (3) ceramics; (4) carbon and graphite; and (5) wood[109][110][111][112][113][114][115][116][117][118][119][120][121][122][123][124][125][126][127].6.2.1.4. Changing mediums.…”

mentioning

confidence: 99%

“…Typical changes in the medium that are often employed are (1) lowering temperature, (2) decreasing velocity, (3) removing oxygen or oxidizers, and (4) changing concentration. In many cases, these changes can significantly reduce corrosion, but they must be done with care[109][110][111][112][113][114][115][116][117][118][119][120][121][122][123][124][125][126][127][128].…”

mentioning

confidence: 99%

See 3 more Smart Citations

Polymer/layered silicate nanocomposite anticorrosive coatings

Yeh

Chang

2008

Journal of Industrial and Engineering Chemistry

104

View full text Add to dashboard Cite

Section: Types Of Corrosionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Polymer/layered silicate nanocomposite anticorrosive coatings

Yeh

Chang

2008

Journal of Industrial and Engineering Chemistry

104

View full text Add to dashboard Cite

“…Originally reported in 1899 2 to have inhibitive properties, it remained effectively unnoticed until the 1940s 3 ; it is now one of the most widely employed inhibitors. Of these only a very few are ever actually used in practical systems.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Inhibition: Principles and Practice

Mercer¹

1976

Corrosion

View full text Add to dashboard Cite

Sodium nitrite as an inhibitor against the attack of sea water on steel. Part I. The influence of sodium nitrite on the area and intensity of attack

Wyllie

Cheesman

1949

J. Chem. Technol. Biotechnol.

View full text Add to dashboard Cite

The prevention by sodium nitrite of the attack of sea water on steel has been studied in two ways.(a) Observation of the extent and nature of corrosion of mild steel specimens partially immersed in sea water containing nitrite.(b) Measurement of the corrosion currents using a divided cell. The appearance of a widespread brown discolouration on the steel at the higher nitrate concentrations is discussed and a catalytic mechanism is suggested for the inhibiting action of nitrite.The effect of mixing phosphates and nitrite is reported.In recent years sodium nitrite has come into prominence as a corrosion inhibitor, having been employed in cooling liquids for internal combustion engines' and for the protection of oil pipe-lines against the corrosive action of the moisture carried by gasoline.2 The electro-chemical properties of solutions of nitrite have been investigated by Solovlev3 who reported that the passivating action of nitrite establishes a constant potential over the whole surface of the metal. (A paper by &hen* has appeared since the preparation of this paper.) More recently HoarG has made a further study of corrosion potentials and considers that nitrites convert any ferrous salts into ferric salts at their place of origin and thus stiflz the attack. Bbwreya has developed the practical application of nitrites and applied them LO marine problems.In the course of corrosion experiments it was observed that a widespread shallow attack took place on steel in the presence of considerable concentrations of sodium nitrite. This form of corrosion had some interesting features and a detailed examination has been made of the area and type of corrosion.No potential measurements were attempted in view of the results that have been reported by other workers but the corrosion currenis have been measured using a divided cell. The effect of adding phosphates to nitrite has also been noted.Promising results have been obtained and this line of investigation has been followed up with results which will be reported in a later communication. Static corrosion fesfsTest-pieces were hung vertically and centrally from glass supports in 100 ml. beakers. The lower edge of each test-piece was approximately 0-5 cm. from the bottom of the beaker and the depth of immersion was approximately 7 cm. In the initial experiments the beaker was loosely covered by a watch-glass and no oil or other liquid was poured on top of the test solution. In order to reduce evaporation and minimize action at the air water interface the practice of pouring a I -5 cm. layer of turbine lubricating oil on top of the test solution was later adopted. This oil laycr reduces but does not eliminate the supply of oxygen reaching the test solution, the effect being marked at low nitrite concentration but of less importance when larger amounts are in use. Experiments were carried out both at room temperature (approximately zs'c.) and at 60"c. by day, the temperature dropping to room temperature at night. Comparable conditions were ensured by simultaneously making a lar...

show abstract

Preventing Internal Corrosion of Pipe Lines

Cited by 12 publications

References 2 publications

Polymer/layered silicate nanocomposite anticorrosive coatings

Polymer/layered silicate nanocomposite anticorrosive coatings

Corrosion Inhibition: Principles and Practice

Sodium nitrite as an inhibitor against the attack of sea water on steel. Part I. The influence of sodium nitrite on the area and intensity of attack

Contact Info

Product

Resources

About