Accelerating Effect of Decreasing Temperature On Corrosion by Glycol Solutions

Caplan, D.; Cohen, Merrill

doi:10.5006/0010-9312-9.8.284

Cited by 2 publications

(2 citation statements)

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“…The review by Saunders et al concludes that “…all aspects of oxide growth including adsorption, dissociation, and diffusion of reactants are altered in the presence of water vapor compared to dry conditions.” For chromia‐forming stainless steels the general trend is that the oxidation rates increases and may lead to breakaway (non‐protective) oxidation. Caplan and Cohen were the first to note that severe oxidation of Cr–Ni steels occurred in O 2 –H 2 O atmospheres and this topic has subsequently been addressed by numerous authors, e.g., Chromium is lost by volatilization, and in the presence of water vapor this is accelerated by formation of CrO 2 (OH) 2 (g) . The critical amount of chromium needed to form a protective Cr 2 O 3 scale thus increases when water is present and this loss of chromium can also be responsible for the breakdown of the chromia scale .…”

Section: Introductionmentioning

confidence: 99%

Fast and Efficient Annealing of Stainless Steel Strip Using Oxyfuel Burners

Lindell

Ekman

Pettersson

2014

steel research int.

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Pilot plant and annealing experiments have been conducted to study the effect of the higher water content in oxyfuel annealing on oxidation and pickling of cold rolled stainless steel. The experiments were conducted on the austenitic grade AISI 304 in a propane-fired furnace using air and pure oxygen as oxidizers. The experiments were conducted at 1050-1200 8C for typically less than 60 s, in order to simulate industrial annealing of thin strip. Supplementary laboratory annealing trials were made to study the evolution of the microstructure during fast heating rates and short hold times. Increasing the water content from 15 to 50 mol% did not alter the oxidation kinetics or the chemistry of the oxide. Since the oxidation is not altered significantly, the pickling performance of the material remains unchanged. The presence of spalled areas increased the pickling efficiency significantly but this was only seen for material annealed at higher temperature compared to industrial practice. Oxyfuel combustion allows higher heat input and therefore faster heating. The 304 grade recrystallizes readily even at moderate cold rolling reductions so the total annealing time can be reduced substantially if the heating rate can be increased. The present work suggests that this can be done without any downstream effects.

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Section: Introductionmentioning

confidence: 99%

Fast and Efficient Annealing of Stainless Steel Strip Using Oxyfuel Burners

Lindell

Ekman

Pettersson

2014

steel research int.

View full text Add to dashboard Cite

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“…In 1949 an extensive review of the physical and chemical properties of various antifreeze solutions, including experimental data on corrosion rates and inhibitors, was published by Schweiz Gesellschaft tor das Studium der Motorbrennstoffe (7). Wormwell and his associates (77) have made an extensive study of sodium benzoate and sodium nitrite as corrosion inhibitors for ethylene glycol, and Caplan and Cohen (2) have shown that corrosion rates of some metals may be accelerated at low temperatures in certain inhibited glycol systems. Finally, Twiss and Guttenplan (9) have investigated the corrosion of an aluminum alloy as a function of velocity and impurities in water used to make up glycol solutions.…”

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confidence: 99%