Electrolytic cadmium plating for cadmium coating as the AISI 4130 steel corrosion protector

2021 ◽  
Author(s):  
Lizda Johar Mawarani ◽  
Amanda Septiana ◽  
Muhammad Fadila ◽  
Agussalim
Keyword(s):  
Steel Corrosion ◽  
Cadmium Plating ◽  
Aisi 4130

Thermodynamic probability analysis of the effects of Rb on the corrosion susceptibility of Cr-containing steels for nuclear materials canisters

CORROSION ◽  
10.5006/3917 ◽  
2021 ◽  
Author(s):  
Kang Wang ◽  
Charles Demarest ◽  
Mathew Asmussen ◽  
John Scully ◽  
Bi-Cheng Zhou
Keyword(s):  
Corrosion Resistance ◽  
Steel Corrosion ◽  
Reaction Products ◽  
Β Decay ◽  
Cr2o3 Scale ◽  
Stable Species ◽  
Aqueous Environments ◽  
Corrosion Susceptibility ◽  
Aisi 4130 ◽  
Thermodynamic Probability

Rubidium (Rb) generated from the β-decay of Kr-85 has been theorized to be corrosive toward steel, specifically in the storage of Kr-85 nuclear waste streams. In the present study, the phase equilibria of RbxCryOz oxides with Rb in dry oxygen and water are investigated to understand a possible pathway to unusual deterioration of the corrosion resistance of canister steels in the presence of Rb. It was found that, in dry oxygen environments, the accumulation of Rb (more than 0.01 mol) can completely consume the Cr in 1 mol of AISI 4130 steel by forming -Rb2CrO4 and Rb3CrO4 and prevent the formation of protective Cr2O3 scale. In aqueous environments, RbxCryOz oxides are metastable species. In order to investigate their role, the probability of forming various oxides is invoked in order to avoid the all-or-nothing approach to oxide formation typical of E-pH diagram, which only predicts the most stable species dissolved, ionized or solid ionized. Thus, the probability of forming RbxCryOz was considered and reported herein. It was found RbxCryOz can possess a larger than 7% probability of forming over Cr2O3 in Rb rich case and 15% in Cr rich case, indicating that it is expected to find small amount of RbxCryOz in the thermodynamically formed reaction products. Even though Cr2O3 is more stable than RbxCryOz oxides, the protective Cr2O3 scale is likely to have some vulnerability to Rb, leading to one possible route for the decline in the corrosion resistance of steel canisters in aqueous environments. Therefore, from a thermodynamic perspective, the current study supports the hypothesis that Rb can thermodynamically react with Cr in steels and can lead to formation of RbxCryOz at certain potentials and pH levels, showing the Rb influence of steel corrosion cannot be discounted. The paper considers experimental mixed potential and pH levels observed and relationship to thermodynamic probability. From this relative corrosion resistance can be assessed in a preliminary way in aqueous environments.

Protective postaction of inhibitor IFKhAN-92 for chromium-nickel stainless steel corrosion in hydrochloric acid

2019 ◽  
pp. 20-25
Author(s):  
Ya.G. Avdeev ◽  
◽  
Yu.B. Makarychev ◽  
D.S. Kuznetsov ◽  
L.P. Kazanskii ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Hydrochloric Acid ◽  
Steel Corrosion

Inhibition of pipeline steel corrosion in acidic environment using sulphadoxine and pyrimethamine

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Inhibition Efficiency ◽  
Pipeline Steel ◽  
Electrochemical Techniques ◽  
Steel Corrosion ◽  
Acidic Environment ◽  
Inhibitor Concentration ◽  
Adsorption Data ◽  
Corrosion Inhibition Efficiency ◽  
Inhibitive Action ◽  
Sulphadoxine Pyrimethamine

The anti-corrosive properties of sulphadoxine + pyrimethamine (S+P) on the corrosion of pipeline steel in acidic environment were investigated using electrochemical techniques. The results obtained showed an excellent inhibition efficiency which increased with increase in inhibitor concentration. The corrosion inhibition efficiency increased up to 99.04 % at 0.01M S+P and decreased with rise in temperature down to 85.93 % at 333 K and 0.01 M S+P, suggesting a physiosorptive mechanism of adsorption. Also the adsorption data was fitted into Langmuir and Temkin adsorption isotherms, while the inhibitive action was shown to proceed by mixed inhibition mode.

MECASTEEL 90

Alloy Digest ◽  
2014 ◽  
Vol 63 (3) ◽  
Keyword(s):  
Fracture Toughness ◽  
Yield Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
High Strength ◽  
Hydraulic Systems ◽  
Aisi 4130 ◽  
Minimum Yield

Abstract Mecasteel 90 (minimum yield strength 90 ksi) is a high-strength prehardened steel that can be used in substitution for conventional steels, such as AISI 4130, in the manufacture of massive steel components such as machines, hydraulic systems, and pumps. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness. It also includes information on forming and joining. Filing Code: SA-697. Producer or source: Industeel USA, LLC.

Steel Corrosion in Concrete Mixed with Seawater

2018 ◽  
Vol 56 (12) ◽  
pp. 989-994
Author(s):  
T. Nishida ◽  
N. Otsuki ◽  
H. Hamada
Keyword(s):  
Steel Corrosion

The protective effect of magnesium phosphate cement on steel corrosion

2020 ◽  
Vol 255 ◽  
pp. 119422 ◽  
Author(s):  
Hao Tang ◽  
Jueshi Qian ◽  
Ziwei Ji ◽  
Xiaobing Dai ◽  
Zhen Li
Keyword(s):  
Protective Effect ◽  
Steel Corrosion ◽  
Magnesium Phosphate

Tetrahydroacridines as corrosion inhibitor for X80 steel corrosion in simulated acidic oilfield water

2019 ◽  
Vol 293 ◽  
pp. 111478 ◽  
Author(s):  
Weiwei Zhang ◽  
Hui-Jing Li ◽  
Meirong Wang ◽  
Li-Juan Wang ◽  
Qianwen Pan ◽  
...  
Keyword(s):  
Corrosion Inhibitor ◽  
Steel Corrosion ◽  
X80 Steel ◽  
Oilfield Water

Steel Corrosion Characterization Using Pulsed Eddy Current Systems

2012 ◽  
Vol 12 (6) ◽  
pp. 2113-2120 ◽  
Author(s):  
Yunze He ◽  
Guiyun Tian ◽  
Hong Zhang ◽  
Mohammed Alamin ◽  
Anthony Simm ◽  
...  
Keyword(s):  
Eddy Current ◽  
Steel Corrosion ◽  
Pulsed Eddy Current ◽  
Current Systems
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