Chemo-Mechanical Effects of Flow on Corrosion

Heitz, Ewald

doi:10.5006/1.3585229

Cited by 121 publications

(70 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The analyze above has neglected the effect of the velocity of the liquid metals, in fact when LBE flows over the structural material surfaces, the corrosion processes will be accelerated, which is termed as flow accelerated corrosion (FAC). The combination of dissolution and the effect of FAC results in four main types of flow accelerated corrosion: mass transport-controlled corrosion, phase transport-controlled corrosion, erosion-corrosion and cavitation-corrosion [6]. Mass transport controlled corrosion occurs when the flow velocity is low.…”

Section: Mechanism and Mitigation Of Corrosion Processesmentioning

confidence: 99%

High temperature liquid metal corrosion and its thermal hydraulic effects in spent fuel transmutation systems

Niu

Zhang

et al. 2014

Progress in Nuclear Science and Technology

View full text Add to dashboard Cite

The corrosion of Liquid lead or lead-bismuth eutectic (LBE) on the structural steels is a serious problem for their application in fast reactors or accelerator-driven transmutation systems. This paper focuses on the modeling and experimental study on LBE corrosion in the spent fuel transmutation systems, as well as the effects of corrosion products on heat transfer and flow. By studying the corrosion and deposit of the oxidation products on the pipe wall, the empirical correlations of thermal resistance and fouling factor can be theoretically developed and experimentally verified. The comparison of fouling factors obtained with each oxygen level is presented, the relationship between fouling factors and oxygen concentrations is correlated, and the effects of oxidation on heat transfer are demonstrated qualitatively by wetting conditions of the samples.

show abstract

Section: Mechanism and Mitigation Of Corrosion Processesmentioning

confidence: 99%

High temperature liquid metal corrosion and its thermal hydraulic effects in spent fuel transmutation systems

Niu

Zhang

et al. 2014

Progress in Nuclear Science and Technology

View full text Add to dashboard Cite

show abstract

“…A number of mechanisms of combined actions of flow and corrosion results in four main types of FAC: mass transport-controlled corrosion, phase transport-controlled corrosion, erosion corrosion, and cavitation corrosion. 7,23,24) …”

Section: 7)mentioning

confidence: 99%

Buoyancy-Enhanced Oxygen Transport in the Experimental Liquid Lead Bismuth Eutectic Container

Tan

Chen

Tan

2009

Journal of Nuclear Science and Technology

View full text Add to dashboard Cite

The active oxygen control technique is a recently developed effective method for mitigating structural corrosions by forming a protective oxide film along the structural materials in corrosive lead bismuth eutectic (LBE) systems. The mechanisms of LBE corrosion and the oxidation of stainless steel in LBE environment have been analyzed. The active oxygen control technique is introduced and the oxidation experiment results with oxygen control are summarized. The buoyancy-enhanced oxygen transport, both laminar and turbulent, in the experimental LBE container has been numerically investigated using the finite volume method. The flux of oxygen at the gas-liquid and solid-liquid interfaces, the oxygen concentration in the bulk flow, and the rate of oxide layer formation are calculated. The time needed for the momentum and energy to reach the steady state and the time for the bulk concentration of oxygen to reach equilibrium are estimated. The rate of oxide layer formation on the steel surface under different thermal boundary conditions and diffusivities is also calculated. The numerical analysis provides a guideline for the design and setup of the apparatus in testing and calibrating low-concentration oxygen sensors and to study the oxidation of stainless steel containers for LBE.

show abstract

“…A general dependence of the corrosion rate on fluid velocity could be established in terms of a potential relation between the corrosion rate and the Reynolds number [48][49][50][51] : 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 15 i corr = constant·Re a (5)…”

Section: Figures 4 and 6 Show That The Reynolds Number Does Not Have mentioning

confidence: 99%

Influence of temperature and hydrodynamic conditions on the corrosion behavior of AISI 316L stainless steel in pure and polluted H3PO4: Application of the response surface methodology

Sánchez-Tovar

Montañés

Garcı́a-Antón

et al. 2012

Materials Chemistry and Physics

View full text Add to dashboard Cite

ElsevierSánchez Tovar, R.; Montañés Sanjuan, MT.; Garcia-Anton, J.; Abdellah; Guenbour, A. (2012). Influence of temperature and hydrodynamic conditions on the corrosion behavior of AISI 316L stainless steel in pure and polluted H3PO4: Application of the response surface methodology. Materials Chemistry and Physics. 133(1):289-298. doi:10.1016/j.matchemphys.2012.01.024 . 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 AbstractThe cost associated with corrosion is an issue of major economic importance; controlling corrosion would promote the conservation of natural resources in relation to metals and save both energy and water. Phosphoric acid is mainly produced by the wet acid process, where corrosion problems could be intensified due to the presence of impurities in the phosphate rock. Operating temperatures and flowing conditions aggravate the aforementioned problems.This work studies the influence of temperature (25 to 60 ºC) and hydrodynamic conditions (Reynolds numbers from 1456 to 5066) on the corrosion of AISI 316L stainless steel in pure and polluted phosphoric acid solutions, by means of cyclic potentiodynamic polarization curves in a hydrodynamic circuit. The effect of temperature is the same as that caused by impurities; that is, higher corrosion rates and hindered passivation and repassivation resistance of the alloy. Statistical analysis by means of surface response methodology proved that the effect of temperature on the corrosion parameters of ASI 316L is more influential than the Reynolds number effect. The Reynolds number seems to have no significant 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 2 influence on the corrosion behaviour of stainless steel. Furthermore, the influence of temperature on the corrosion rate is much higher than on the rest of the corrosion parameters analysed, especially in polluted phosphoric acid solutions. AISI 316L stainless steel has a clear interest for the phosphoric acid industry as a component material of some equipment due to its good corrosion properties at the different temperatures and Reynolds numbers studied even in polluted media. *Manuscript Click here to view linked References

show abstract

Chemo-Mechanical Effects of Flow on Corrosion

Cited by 121 publications

References 0 publications

High temperature liquid metal corrosion and its thermal hydraulic effects in spent fuel transmutation systems

High temperature liquid metal corrosion and its thermal hydraulic effects in spent fuel transmutation systems

Buoyancy-Enhanced Oxygen Transport in the Experimental Liquid Lead Bismuth Eutectic Container

Influence of temperature and hydrodynamic conditions on the corrosion behavior of AISI 316L stainless steel in pure and polluted H3PO4: Application of the response surface methodology

Contact Info

Product

Resources

About