Effect of Trace Impurities in Pure Water on Corrosion of Carbon Steel at Room Temperature

Poly(N-isopropylacrylamide) (PNIPAM) nanoparticles formed in water-methanol binary solvent were successfully deposited on a resonator surface at room temperature by exploiting the cononsolvency effect on the phase transition of PNIPAM aqueous solutions. Scanning electron microscopic observation revealed that the nanoparticles were secondary and made up of agglomerated primary spherical particles of about 10-nm diameter, buried in the film. The magnitude of the sensor response toward HCl gas was larger than that of the nanoparticle sensor prepared from pure water solvent, and the sensitivity to 1 ppm of HCl of sensor-coated nanoparticles based on the present method was 3.3 Hz/ppm. The recovery of the sensors was less than 90% at first cycle measurement, but had improved to almost 100% at the third cycle.

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The Effect Of Hydrazine Addition On The Formation Of Oxygen Molecule By Fast Neutron Radiolysis

KnE Energy ◽

10.18502/ken.v1i1.471 ◽

2016 ◽

Vol 1 (1) ◽

Author(s):

G.R. Sunaryo

Keyword(s):

Room Temperature ◽

Pure Water ◽

Water System ◽

Calculation Model ◽

High Dose ◽

Primary Coolant ◽

Batch System ◽

Different Temperatures ◽

Oxygenated Water ◽

Deaerated Condition

Hypothetically speaking, hydrazine could suppress the oxygen formation as a major of corrosion initiator. In this work, we developed a calculation model to understand the effect of hydrazine addition toward the oxygen under PWR condition. Our great interest is to study whether this strategy would also be effectively applied in PWRs<a href="file:///C:/Users/Mohamad%20Mostafa/Desktop/Knowledge%20E/In%20Press%20Conferences/ICoNETS-2015/Source-Manuscripts/20_L05-Geni_p136-141.docx#_msocom_1">[P1]</a> . In the present work, the effect of hydrazine on suppressing the molecule oxygen under neutron irradiation is described. The simulation was done by using FACSIMILE. The variation dose applied assuming a batch system and at high dose ~104 Gy s-1. Three different temperatures were applied, which are room temperature, 250 and 300 oC at two system oxygenated water, which are aeration and deaeration. At room temperature, for deaerated condition, added hydrazine under a range of 10-6 – 10-4 M into primary coolant were not effective to suppress O2 form since the effect was similar as in the pure water system since for 10-3 M hydrazine addition, a large produce of O2 were obtained. In reverse, for deaerated condition, hydrazine concentrate about 10-3 M can suppress O2 form significantly, while hydrazine add in the range between 10-6 – 10-4 M is again confirmed to be the same as in pure water system. For high temperature, at 250 and 300 oC, the results showed that in deaerated condition, hydrazine addition can suppress O2 form proportionally to its concentration while in aerated condition, hydrazine add with concentration of 10-6 and 10-5 M were not effectively to suppress O2 form, a slightly decrease of O2 occurred due to the addition of 10-4 M hydrazine and 10-3 M of hydrazine can suppress the formation of O2 significantly. <a href="file:///C:/Users/Mohamad%20Mostafa/Desktop/Knowledge%20E/In%20Press%20Conferences/ICoNETS-2015/Source-Manuscripts/20_L05-Geni_p136-141.docx#_msocom_2">[P2]</a> <div><hr align="left" size="1" width="33%" /><div><div> <a href="file:///C:/Users/Mohamad%20Mostafa/Desktop/Knowledge%20E/In%20Press%20Conferences/ICoNETS-2015/Source-Manuscripts/20_L05-Geni_p136-141.docx#_msoanchor_1">[P1]</a>The added sentence </div></div><div><div> <a href="file:///C:/Users/Mohamad%20Mostafa/Desktop/Knowledge%20E/In%20Press%20Conferences/ICoNETS-2015/Source-Manuscripts/20_L05-Geni_p136-141.docx#_msoanchor_2">[P2]</a>The revised sentence</div></div></div>

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Effect of Hot Forging and Different Cooling Rates on the Microstructure, Mechanical Properties of Carbon Steel Containing 0.8 and 1.2Al

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.622-623.174 ◽

2014 ◽

Vol 622-623 ◽

pp. 174-178

Author(s):

Ahmed Ismail Zaky Farahat ◽

Mohamed Kamal Elfawkhry

Keyword(s):

Mechanical Properties ◽

Carbon Steel ◽

Mechanical Testing ◽

Room Temperature ◽

Induction Furnace ◽

Hot Forging ◽

X Ray Diffraction ◽

Cooling Rates ◽

X Ray ◽

Sem Microstructure

Two alloys of steel containing nominally 0.45C-1.0Si-2.0Mn-0.8Al and 1.2Al were cast in open air induction furnace. Dilatation testing was carried out to recognize the effect on Aluminum on the different critically transformation temperatures. The alloys were hot forged at 1200°C and then subjected to different cooling rates. Mechanical testing was carried out at room temperature. Optical and SEM microstructure were observed. X-ray diffraction was conducted to observe the microstructure constituents.

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Preparation and Applications of Hydrophilic Nano-Carbon Particles

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.832.767 ◽

2013 ◽

Vol 832 ◽

pp. 767-772 ◽

Cited By ~ 5

Author(s):

Shoichiro Ikeda ◽

Shinji Kawasaki ◽

Akinari Nobumoto ◽

Hideo Ono ◽

Shinji Ono ◽

...

Keyword(s):

Carbon Nanoparticles ◽

Room Temperature ◽

Ph Value ◽

Pure Water ◽

Solid Lubricants ◽

Cutting Fluids ◽

Carbon Particles ◽

Synthetic Graphite ◽

Nano Carbon

We have produced nanocarbon suspension in pure water, which is named as Nanocaloid®, by a simple DC electrolysis from a synthetic graphite plates as anodes and SUS plates as cathodes in purified water at room temperature. The amount of carbon nanoparticles was monitored by the conductivity and pH value of the electrolyte solution, and also by a simple gravimetric way after drying the solution. If the current density increases, the diameter of the carbon particles becomes larger and the amount of precipitates becomes also large. It takes about six weeks to obtain about 0.4 wt% carbon suspension solution under the normal electrolysis conditions. Characterization of Nanocaloid®has been conducted to show unique properties and promising epoch-making applications such as solid lubricants for non-oily cutting fluids and conductive agents for reuse of deteriorated Pb-acid batteries. The performance of nanocarbon particles in oil lubricants in addition to the preparation will be reported.

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Inhibitive Effect of Fatty Amide and Secondary Species on the Corrosion of Carbon Steel

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1133.366 ◽

2016 ◽

Vol 1133 ◽

pp. 366-370 ◽

Cited By ~ 1

Author(s):

Izni Mariah Ibrahim ◽

Junaidah Jai ◽

Md Amin Hashim

Keyword(s):

Carbon Steel ◽

Room Temperature ◽

Inhibition Efficiency ◽

Static Condition ◽

Fatty Amide ◽

Nacl Solution ◽

Inhibition Effect ◽

Linear Polarization Resistance ◽

Atomic Force ◽

Polarization Resistance Method

The effect of hydrazine, N2H4 in the presence of fatty amide as corrosion inhibitor on corrosion of carbon steel in 3.5 wt% NaCl solution was studied by linear polarization resistance method (LPRM) at room temperature and static condition. The specimens’ surface analysis was done using atomic force microscope (AFM). The inhibition efficiency improved to more than 80% when 500, 100 and 2000 ppm of hydrazine were added to the inhibited solution containing 20 ppm fatty amide. The results obtained show that the inhibition effect is increased with increase of hydrazine concentration in inhibited solution. It indicates that hydrazine retards the reduction of oxygen in the corrosion process by reacting with dissolved oxygen in the solution and thus, further it reduces the corrosion rate of carbon steel.

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EFFECTS OF TEMPERATURE ON MILD STEEL GRADIENT-DISTRIBUTED WBE IMMERSED IN 3.5 wt.% NaCl SOLUTION

Surface Review and Letters ◽

10.1142/s0218625x21500141 ◽

2021 ◽

pp. 2150014

Author(s):

QINGDONG ZHONG

Keyword(s):

Carbon Steel ◽

Electrochemical Method ◽

Room Temperature ◽

Nacl Solution ◽

Corrosion Medium ◽

Different Temperatures ◽

Effects Of Temperature ◽

Temporal And Spatial ◽

Wire Beam Electrode ◽

Electrode Technique

To study the corrosion behavior of carbon steel in seawater at different temperatures, a novel electrochemical method called gradient-distributed wire beam electrode technique with high temporal and spatial resolution has been employed. This new wire beam electrode was prepared by three kinds of carbon steel with different carbon contents so that it can evaluate three materials simultaneously in the same corrosion medium (3.5[Formula: see text]wt.% NaCl solution) and improve the accuracy of tests results. After the gradient-distributed wire beam electrode soaked in 3.5[Formula: see text]wt.% NaCl solution for 8[Formula: see text]h, compared with measured at room temperature, the corrosion rate was accelerated greatly and polarity reversal of potential-current was also observed.

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The damage mechanism of Alloy 690TT against Alloy 600 caused by fretting wear in room temperature pure water

Materials Characterization ◽

10.1016/j.matchar.2020.110176 ◽

2020 ◽

Vol 161 ◽

pp. 110176 ◽

Cited By ~ 2

Author(s):

Long Xin ◽

Qian Huang ◽

Yongming Han ◽

Yonghao Lu ◽

Weidong Zhang ◽

...

Keyword(s):

Room Temperature ◽

Pure Water ◽

Damage Mechanism ◽

Fretting Wear ◽

Alloy 600

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Effect of Solvent Composition on the Critical Micelle Concentration of Cetylpyridinium Chloride in Ethanol-Water Mixed Solvent Media

Nepal Journal of Science and Technology ◽

10.3126/njst.v13i1.7446 ◽

2013 ◽

Vol 13 (1) ◽

pp. 89-93 ◽

Cited By ~ 5

Author(s):

Ajaya Bhattarai ◽

Sujit Kumar Shah ◽

Ashok Kumar Yadav

Keyword(s):

Critical Micelle Concentration ◽

Room Temperature ◽

Mixed Solvent ◽

Volume Fraction ◽

Science And Technology ◽

Pure Water ◽

Specific Conductivity ◽

Cetylpyridinium Chloride ◽

Solvent Composition ◽

Effect Of Solvent

The accurate measurement of the specific conductivity of cetylpyridinium chloride in pure water and ethanol-water mixed solvent media containing 0.10, 0.20, 0.30 and 0.40 volume fraction of ethanol at room temperature are reported. The concentrations were varied from ~ 0.005 mol l-1 to ~ 0.0002 mol l-1.The conductivity of cetylpyridinium chloride decreases with the increase in the volume fraction of ethanol. The critical micelle concentration of cetylpyridinium chloride increases with the increase in the volume fraction of ethanol. Nepal Journal of Science and Technology Vol. 13, No. 1 (2012) 89-93 DOI: http://dx.doi.org/10.3126/njst.v13i1.7446

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