scholarly journals Determination of the Corrosion Resistance of SS-304 in Synthetic Seawater at Two Temperatures Using Electrochemical Noise and Polarization Curves

2016 ◽  
pp. 8683-8696 ◽  
Author(s):  
Diego Mendoza Morales ◽  
Keyword(s):  
Corrosion Resistance ◽  
Electrochemical Noise ◽  
Polarization Curves ◽  
Synthetic Seawater ◽  
Two Temperatures ◽  
Ss 304

ARMCO NITRONIC 50 STAINLESS STEEL

Alloy Digest ◽  
1990 ◽  
Vol 39 (4) ◽  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Heat Treating ◽  
Temperature Performance ◽  
Price Range ◽  
Cold Worked ◽  
Ss 304

Abstract ARMCO NITRONIC 50 STAINLESS STEEL provides a combination of corrosion resistance and strength not found in any other commercial material available in its price range. It has good mechanical properties at both elevated and sub-zero temperatures. It does not become magnetic when cold worked. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-304. Producer or source: Baltimore Specialty Steels Corporation. Originally published as Nitronic 50, January 1975, revised April 1990.

Assessment of the adhesion and corrosion resistance of PMMA-SiO2 coatings in synthetic seawater

MRS Advances ◽  
2021 ◽  
Author(s):  
M. S. Merino-Duran ◽  
M. Estévez ◽  
G. Carbajal-De la Torre ◽  
A. R. Hernández-Martínez ◽  
R. Esparza ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Synthetic Seawater

scholarly journals Corrosion Resistance of Fiber-reinforced Geopolymer Structural Concrete in a Simulated Marine Environment

2021 ◽  
Author(s):  
Khaled Sobhan ◽  
Francisco Martinez ◽  
D.V. Reddy
Keyword(s):  
Corrosion Resistance ◽  
Marine Environment ◽  
Electrochemical Method ◽  
Ordinary Portland Cement ◽  
Load Capacity ◽  
Fiber Reinforced ◽  
Structural Concrete ◽  
Accelerated Corrosion ◽  
Damaged Beams

The corrosion resistance of fly ash-based geopolymer structural concrete (GPC), with or without fibers, was investigated in a simulated marine environment, and compared with that of ordinary Portland cement structural concrete. The corrosion behavior is studied through an electrochemical method for inducing accelerated corrosion. The fiber-reinforced specimens contained polyolefin fibers in the amounts of 0.1%, 0.3%, and 0.5% by volume. Several artificial corrosion conduits were introduced into the specimens reaching up to the rebars. This process enhanced the rate of laboratory corrosion in GPC. The corrosion-damaged beams were then analyzed through a method of crack scoring, and determination of steel mass loss and residual flexural load capacity. The fiber-reinforced corroded GPC beams showed a 24% reduction in crack scores, and a 109% increase in residual flexural load capacity, compared to unreinforced corroded GPC beams. This shows promise of fiber-reinforced GPC as a sustainable structural material in the marine environment.

An investigation on the possibility to improve the corrosion and cavitation resistance of SS304 steel by NiTi coatings

2021 ◽  
Vol 35 (04) ◽  
pp. 2150057
Author(s):  
Qunfeng Zeng ◽  
Khashayar Khanlari ◽  
Naiming Lin
Keyword(s):  
Wear Resistance ◽  
Corrosion Resistance ◽  
Niti Alloy ◽  
Preliminary Investigation ◽  
Industrial Applications ◽  
Cavitation Resistance ◽  
Niti Alloys ◽  
Materials Used ◽  
Ss 304 ◽  
Increasing Load

Equiatomic and near equiatomic NiTi alloys, showing good mechanical and thermal shape memory properties, are widely exploited in different industrial applications. In addition, NiTi alloys have promising anti-cavitation and corrosion-resistance properties. These advantages have provided opportunities to exploit NiTi alloys as the coatings for protecting materials used in the industrial applications. This study is a preliminary investigation aiming to evaluate the feasibility to form NiTi alloy coatings on SS304 steel by tungsten inert argon arc welding (TIG) technology. The microstructure analysis shows that the crystalline phases in NiTi coatings on SS 304 steel are TiNi-B2, TiNi-B19’ and Ni3Ti. The potential of the NiTi coatings to enhance the corrosion resistance and cavitation resistance behaviors of steel exposed to seawater is studied. NiTi coatings, with two different thicknesses of about 1.2 and 2 mm, having homogenous microstructures were successfully deposited on SS304 steel using TIG technology. Results of tests, done in aqueous solutions simulating seawater, showed that the formation of the oxide films on the surface of NiTi coatings increased the corrosion resistance and wear resistance and decreased the damage caused by the cavitation. Moreover, it was understood that the NiTi coatings with 2 mm in thickness show the superior performances than those with 1.2 mm in thickness. The tribological mechanisms responsible for the unique properties of NiTi alloy coatings were investigated. The wear-resistance behaviors of NiTi alloy coatings are greatly influenced by the friction conditions. Increasing load decreased CoF and the wear rate of the coatings were almost constant, which was attributed to the pseudoelasticity of NiTi alloy. The attractive properties of NiTi alloys that makes it most influential materials for industrial applications have also been discussed.

Microstructure and Properties of Cast Iron Using Chromizing Process

2012 ◽  
Vol 503-504 ◽  
pp. 416-419
Author(s):  
Guo Dong Zhang ◽  
Hong Mei Cao ◽  
Jin Fei Xu
Keyword(s):  
Corrosion Resistance ◽  
Cast Iron ◽  
Corrosion Rate ◽  
Alloy Layer ◽  
Polarization Curves ◽  
Iron Surface ◽  
Chromium Layer ◽  
Iron Matrix ◽  
Macroscopic Defect ◽  
Micro Morphology

Cast iron was chromized by solid powder method at 1000°C. Micro-morphology and microstructure of chromized alloy layer and cast iron matrix were analyzed, their hardness, elements distribution and corrosion resistance were studied in depth. The analysis results revealed that the chromized carbide-chromium layer grew well on cast iron surface, which was smooth and free from macroscopic defect. Campared with the hardness of original cast iron matrix, the hardness of the chromized alloy layer has been improved by 3.5 times, which was as high as 918.8 HV. And the corrosion resistance of the chromized alloy layer has been greatly improved. The relative corrosion rate of the original cast iron matrix was 2.2 times that of the chromized alloy layer according to their polarization curves.

Corrosion Resistance of a New Cu-Alloy (Low Ni) vis-à-vis Cu-10Ni Alloy in Sulfide Polluted Synthetic Seawater

2012 ◽  
Vol 585 ◽  
pp. 488-492
Author(s):  
Adeeba F. Khan ◽  
Awanikumar P. Patil ◽  
T. Subba Rao
Keyword(s):  
Corrosion Resistance ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Accelerated Corrosion ◽  
Synthetic Seawater ◽  
Cu Alloy

Cu-10Ni alloy suffers accelerated corrosion in sulfide polluted seawater. As an alternative, a new single phased, Cu-28%Zn-5%Ni-5%Mn-2%Fe alloy (hereby referred as CNZ-alloy) is developed and tested for the corrosion resistance in clean and sulfide polluted synthetic seawater. The CNZ-alloy showed better corrosion resistance than the standard Cu-10Ni alloy in both the test solutions i.e. clean and sulfide polluted synthetic seawater with . The results are discussed on the basis of polarization and electrochemical impedance spectroscopy. The better corrosion resistance of CNZ-alloy is attributed to the formation of protective ZnS and MnS2 films.

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