Effect on New Corrosion Inhibitor to Stress Corrosion Cracking of Prestressed Steel Wire in Simulated Concrete Pore Solution

2014 ◽  
Vol 556-562 ◽  
pp. 667-670
Author(s):  
Qi Lei Sun ◽  
Lu Dan Shi ◽  
Ze Rui Liu
Keyword(s):  
Stress Corrosion ◽  
Corrosion Inhibitor ◽  
Stress Corrosion Cracking ◽  
Pore Solution ◽  
Steel Wire ◽  
Chloride Ion ◽  
Corrosion Cracking ◽  
Adsorption Film ◽  
Tension Tests ◽  
Ion Erosion

Slow strain rate tension tests were carried out in order to investigate effect on new corrosion inhibitor to stress corrosion cracking of prestressed steel wire in simulated concrete pore solution. Indeed, the results suggest that C4H13N3 can form adsorption film on the metal surface, prevent chloride ion erosion. Meanwhile, MoO42- may make the passive film become denser. The synergistic effect of C4H13N3 with MoO42-, can reduce the prestressed steel wire SWRH77B in 3.5%NaCl+ saturated Ca (OH)2 solution stress corrosion sensitivity, prevent stress corrosion cracking effectively.

NAS 825

Alloy Digest ◽  
2012 ◽  
Vol 61 (2) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Stress Corrosion ◽  
Tensile Properties ◽  
Nickel Alloy ◽  
Stress Corrosion Cracking ◽  
Chloride Ion ◽  
Heat Treating ◽  
Corrosion Cracking ◽  
Corrosion Resistant

Abstract NAS 825 is a corrosion-resistant nickel alloy that has resistance to both oxidizing and reducing environments, and with 42% nickel, the alloy is very resistant to chloride-ion stress-corrosion cracking. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ni-694. Producer or source: Nippon Yakin Kogyo Company Ltd.

Effect of New Corrosion Inhibitor on Electrochemical Behavior of Prestressed Steel Wire in Simulated Concrete Pore Solution

2014 ◽  
Vol 941-944 ◽  
pp. 1390-1393
Author(s):  
Qi Lei Sun ◽  
Ze Rui Liu ◽  
Yun Zhu Guo ◽  
Feng Liu
Keyword(s):  
Corrosion Inhibitor ◽  
Passive Film ◽  
Corrosion Inhibitors ◽  
Pore Solution ◽  
Steel Wire ◽  
Chloride Ion ◽  
Ammonium Molybdate ◽  
Surface Coat ◽  
Protective Oxide ◽  
Protective Oxide Film

The polarization curve and AC impedance are used to study the impacts of new corrosion inhibitor on the prestressed steel wire electrochemistry action in the simulated concrete pore solution. The result shows that, the ammonium molybdate, DETA, propylene thiourea, 1,4-butynediol and other compound corrosion inhibitors are positive inhibitory corrosion inhibitors, with the components of passivator and healant of protective oxide film, which can contribute to the formation of a passive film of oxide on the rebar surface, repair the defects of rebar surface, coat the entire rebar with a passive film of oxide with good compactness and stability, prevent the chloride ion from penetration, reduce the free rate of iron ions, and thus achieve the anti-corrosion purpose.

Chloride Ion Activity and Susceptibility of Al Alloys 7075-T6 and 5083-H131 to Stress Corrosion Cracking

2012 ◽  
Vol 44 (3) ◽  
pp. 1353-1364 ◽  
Author(s):  
R. E. Ricker ◽  
E. U. Lee ◽  
R. Taylor ◽  
C. Lei ◽  
B. Pregger ◽  
...  
Keyword(s):  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Chloride Ion ◽  
Al Alloys ◽  
Corrosion Cracking ◽  
Ion Activity
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