scholarly journals Optical and electrochemical studies of passive film formation in amorphous Ni‐Cr‐P‐C alloys

1989 ◽  
Vol 66 (8) ◽  
pp. 3942-3945
Author(s):  
D. B. Hagan ◽  
B. W. Sloope ◽  
V. A. Niculescu
Keyword(s):  
Passive Film ◽  
Film Formation ◽  
Electrochemical Studies

Atomic-Scale Coordination Effects on the Initial Stage of Passive Film Formation in Fe-Cr Alloys

2020 ◽  
Vol MA2020-02 (8) ◽  
pp. 1161-1161
Author(s):  
Yusi Xie ◽  
Minglu Liu ◽  
Ashlee Aeillo ◽  
Karl Sieradzki
Keyword(s):  
Passive Film ◽  
Film Formation ◽  
Atomic Scale ◽  
Initial Stage

Influence of Surface Strain on Passive Film Formation of Duplex Stainless Steel and Its Degradation in Corrosive Environment

2019 ◽  
Vol 166 (11) ◽  
pp. C3071-C3080 ◽  
Author(s):  
Cem Örnek ◽  
Marie Långberg ◽  
Jonas Evertsson ◽  
Gary Harlow ◽  
Weronica Linpé ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Passive Film ◽  
Film Formation ◽  
Surface Strain ◽  
Corrosive Environment

Kinetics of Passive Film Formation on Scratched Bare Surfaces of Stainless Steels in Magnesium Chloride Solutions

CORROSION ◽  
1993 ◽  
Vol 49 (11) ◽  
pp. 877-884 ◽  
Author(s):  
D. Li ◽  
X. Mao ◽  
R. Zhu
Keyword(s):  
Passive Film ◽  
Stainless Steels ◽  
Magnesium Chloride ◽  
Film Growth ◽  
Strong Electric Field ◽  
Film Formation ◽  
Adsorbed Layer ◽  
Passive Film Growth ◽  
Kinetics Of ◽  
Bare Surface

Abstract Kinetics of passive film formation on the bare surface of scratched stainless steels SS in magnesium chloride (MgCl2) solutions were studied using the rapid scratching technique under potentiostatic conditions. An experimental device was designed to record data at the rate of 20,000 points/s, with the rotating rate of the specimen at 3,000 rpm and a scratch scar length of about 4.6 mm to 4.8 mm. A new phenomenon was observed in that two peaks were seen rather than a continuous decay in the curve of current decay on scratched SS in MgCl2 solutions. Current decayed steeply to approximately passive current within about 2.5 ms to 3 ms after the diamond knife was moved away from the specimen. Current rose again for about 2 ms to 3 ms. This phenomenon was considered to represent the processes of adsorbed layer formation on the bare surface and transformation of the adsorbed layer into a passive film. Results were affected by the recording rate of experimental data, the specimen rotating rate, and the scratch scar length. The kinetics of passive film growth were shown empirically by i(t) = I0exp(−βt) with I0 and β being constants. Passive film growth was controlled by ion conduction in a strong electric field, as defined by i = A exp(BV/x).

Effect of temperature on passive film formation of UNS N08031 Cr–Ni alloy in phosphoric acid contaminated with different aggressive anions

2013 ◽  
Vol 111 ◽  
pp. 552-561 ◽  
Author(s):  
C. Escrivà-Cerdán ◽  
E. Blasco-Tamarit ◽  
D.M. García-García ◽  
J. García-Antón ◽  
R. Akid ◽  
...  
Keyword(s):  
Phosphoric Acid ◽  
Passive Film ◽  
Film Formation ◽  
Effect Of Temperature ◽  
Ni Alloy
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