𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The active—passive transition in low alloy steels in carbonate solutions

✍ Scribed by A.M. Riley; J.M. Sykes

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
944 KB
Volume
35
Category
Article
ISSN
0013-4686

No coin nor oath required. For personal study only.

✦ Synopsis

A rotatmg rmg-dlsc electrode has been used to study film growth on low alloy steels m carbonate-bicarbonate solution Soluble Fe(II) ions have been detected dunng film growth mltlated by potential steps to active, pre-passive and passive potential regions Fdrn growth m the pre-passive regon has two dlstmct stages Imtlal passlvatlon durmg Stage 1 IS followed by reactlvatlon and extensive dlssolutlon during Stage 2 Stage 2 film growth may be attributed to either the transformation of metastable passive film mto a poorly protective film or the local break-down of the passive film at bamlte laths or prior austemte gram boundarles NOMENCLATURE charge consumed m metal rhssolutlon (mC) charge consumed m oxide film formatlon (mC) total charge consumed m repasslvatlon (mC) lo4 Mf/Z,Fp,A (mm/mC) Valence of metal ion m film f Faraday constant density of film (g/cm) area of exposed metal surface (cm') molar mass of filmf repasslvation rat10 (mC/nm) crack tip stram rate crack tip repasslvatlon rate

📜 SIMILAR VOLUMES

The role of molybdenum in the active—pas
The role of molybdenum in the active—passive transition of iron—chromium alloys
✍ J.H. Gerretsen; J.H.W. De Wit 📂 Article 📅 1991 🏛 Elsevier Science 🌐 English ⚖ 287 KB

In order to clarify the role of MO on the passivation of FeCr-Mo alloys, the critical current density in stationary polarization curves of several alloys, with and without MO, are compared with the maximum current density in potential step measurements. The results showed that MO increases the disso

Corrosion inhibition of carbon and low a
Corrosion inhibition of carbon and low alloy steels in sulphuric acid solutions by 2-mercaptopyrimidine derivatives
✍ Prof. F. Zucchi; Prof. G. Trabanelli; Prof. G. Brunoro; Dr. C. Monticelli; Dr. G 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 German ⚖ 476 KB 👁 1 views

## Abstract Several derivatives of 2‐mercaptopyrimidine (containing ‐OH, ‐SH, ‐NH~2~ or ‐CH~3~ substituents) have been studied as corrosion inhibitors of ARMCO iron and low alloy steels in 1 M sulphuric acid solutions. Tests have been conducted during 6 h in the temperature interval between 60 and

Texture Evolution in Si-Alloyed Ultra Lo
Texture Evolution in Si-Alloyed Ultra Low-Carbon Steels after Severe Plastic Deformation
✍ P. Gobernado; R. Petrov; D. Ruiz; E. Leunis; Leo A. I. Kestens 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 526 KB

## Abstract Conventional thermomechanical processing of low‐carbon steels leads to a characteristic texture dominated by a strong <111>//ND fiber after recrystallization. The latter texture is beneficial for certain applications, such as deep drawing, while it is detrimental for others, including m