Kinetics of Passive Film Formation on Martensitic Stainless Steels

CORROSION ◽  
2000 ◽  
Vol 56 (7) ◽  
pp. 694-699 ◽  
Author(s):  
R. Godec ◽  
A. Petek ◽  
V. Doleček
Keyword(s):  
Passive Film ◽  
Stainless Steels ◽  
Film Formation ◽  
Martensitic Stainless Steels ◽  
Kinetics Of

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).

Hydrogen effects on the passive film formation and pitting susceptibility of nitrogen containing type 316L stainless steels

2006 ◽  
Vol 48 (5) ◽  
pp. 1106-1121 ◽  
Author(s):  
S. Ningshen ◽  
U. Kamachi Mudali ◽  
G. Amarendra ◽  
P. Gopalan ◽  
R.K. Dayal ◽  
...  
Keyword(s):  
Passive Film ◽  
Stainless Steels ◽  
Film Formation ◽  
Type 316L

AISI No. 633

Alloy Digest ◽  
1981 ◽  
Vol 30 (7) ◽  
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
Stainless Steels ◽  
High Strength ◽  
Heat Treating ◽  
Corrosion Resistant ◽  
Martensitic Stainless Steels ◽  
Steel Mills ◽  
Temperature Performance ◽  
Structural Applications

Abstract AISI No. 633 is a chromium-nickel-molybdenum stainless steel whose properties can be changed by heat treatment. It bridges the gap between the austenitic and martensitic stainless steels; that is, it has some of the properties of each. Its uses include high-strength structural applications, corrosion-resistant springs and knife blades. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-389. Producer or source: Stainless steel mills.

CRUCIBLE 174 SXR

Alloy Digest ◽  
2009 ◽  
Vol 58 (5) ◽  
Keyword(s):  
Fracture Toughness ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Austenitic Stainless Steel ◽  
Stainless Steels ◽  
Precipitation Hardening ◽  
High Strength ◽  
Heat Treating ◽  
Martensitic Stainless Steels ◽  
Excellent Corrosion Resistance

Abstract Crucible 174 SXR is a premium-quality precipitation-hardening stainless steel designed for use as rifle barrels. It is a modification of Crucible’s 17Cr-4Ni that offers substantially improved machinability without sacrificing toughness. Its excellent corrosion resistance approaches that of a 300 series austenitic stainless steel, while its high strength is characteristic of 400 series martensitic stainless steels. At similar hardness levels, Crucible 174 SXR offers greater toughness than either the 410 or 416 stainless steels which are commonly used for rifle barrels. This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fracture toughness. It also includes information on forming and heat treating. Filing Code: SS-1034. Producer or source: Crucible Service Centers.

Effect of electroplating and nonmetallic coatings on fatigue strength of martensitic stainless steels

1974 ◽  
Vol 8 (4) ◽  
pp. 395-397
Author(s):  
T. N. Kalichak ◽  
V. I. Pokhmurskii ◽  
Ya. L. Poberezhnyi ◽  
M. F. Alekseenko ◽  
N. N. Mel'nikova
Keyword(s):  
Fatigue Strength ◽  
Stainless Steels ◽  
Martensitic Stainless Steels
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