Corrosion resistance of 316 stainless steel in a simulated pressurized water reactor improved by laser cladding with chromium

Gu, Yuanzheng; Xu, Youwei; Feng, Changgen; Volodymyr, Korzhyk

doi:10.1016/j.surfcoat.2022.128534

Cited by 15 publications

(4 citation statements)

References 46 publications

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“…In this work, the Saga inhibitor acts as a barrier to inhibit the possible dissolution of metal due to the adsorption process. As stated in Section 5, the chromium content of 0.201 % is inadequate to improve the corrosion resistance of the working electrode despite the continuous and dense formation of Cr-rich film (Cr 2 O 3 ) [40]. The film is accountable for reducing the corrosion effect by forming an overlapping 3d orbital of Cr with the 2p orbital of O.…”

Section: Discussion Of Saga As a Green Corrosion Inhibitormentioning

confidence: 99%

Development of saga (Abrus precatorius) seed extract as a green corrosion inhibitor in API 5l Grade B under 1m HCL solutions

Riastuti

Soedarsono

Aribowo

et al. 2022

EEJET

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The critical role of newly green corrosion inhibitors shows the disruption of cathodic and anodic reactions at the metals and solution interface. The object of this study is the development of Saga as a corrosion inhibitor to mitigate the effect of corrosive HCl 1M оn mild steel. The inhibitor was extracted using methanol to prepare various concentrations. Fourier transform infrared (FTIR) spectroscopy was used to determine the functional group of the inhibitor. The electrochemical impedance spectroscopy aided by the potentiodynamic polarization was utilized to evaluate the inhibitor’s effectiveness. Optical emission spectroscopy (OES) was implemented to determine the percentage of elements in mild steel. Based on the FTIR results, C=O, -OH, C=C, benzene, and C-O are accountable for the inhibitor to donate its lone pair of an electron to the 3-d orbital of iron metal. Increasing the inhibitor concentration decreases the capacitive double layer to elevate the inhibitor resistance. The higher inhibitor resistance of 29.33 Ω cm-1 increases as the concentration increases due to the depression of Cdl 420.16 µF cm2 at 10 ml inhibitor solution. Parallelly, it increases the inhibition efficiency at 65.58 %, slightly lower than the PP measurement of nearly 88 %. The higher value of adsorption/desorption constant, Kads, at 2.9 L mol-1 shows the strength of the inhibitor, which lowers the value of Gibbs free energy (ΔGads). The Saga inhibitor is considered a chemisorption inhibitor ΔGads –36.87 kJ/mol. The value demonstrates the formation of dative covalent bonding, which promotes the transferred electron from the inhibitor to the substrate. On the other hand, the Saga inhibitor abides by the Langmuir adsorption isotherm as the R2 value is 0.99.

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Section: Discussion Of Saga As a Green Corrosion Inhibitormentioning

confidence: 99%

Development of saga (Abrus precatorius) seed extract as a green corrosion inhibitor in API 5l Grade B under 1m HCL solutions

Riastuti

Soedarsono

Aribowo

et al. 2022

EEJET

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show abstract

“…Therefore, to obtain a perfect coating using laser cladding, the process parameters must be adjusted repeatedly. Gu et al [196] investigated the morphology, elemental distribution, electrochemical behavior, and oxidation resistance of 316L stainless steel with a Crrich coating prepared using the laser cladding method in a simulated PWR environment. Their findings revealed that the Cr-rich coating substantially improved the corrosion resistance of 316L stainless steel, with the best performance achieved by the Cr coating produced at 220 W.…”

Section: Surface Treatment On the Alloy To Make The Irradiation-resis...mentioning

confidence: 99%

“…The high stress inside the coating leads to warping and cracking of the coating Laser-cladding technology [196] High efficiency, low porosity, low dilution rate, small heat-affected zone, small deformation, and good combination 1. The cost of this technique is high and the precision control is complex 2.…”

Section: Surface Treatment On the Alloy To Make The Irradiation-resis...mentioning

confidence: 99%

Review on synergistic damage effect of irradiation and corrosion on reactor structural alloys

Liu,

Lei,

Huang

2024

NUCL SCI TECH

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The synergistic damage effect of irradiation and corrosion of reactor structural materials has been a prominent research focus. This paper provides a comprehensive review of the synergistic effects on the third- and fourth-generation fission nuclear energy structural materials used in pressurized water reactors and molten salt reactors. The competitive mechanisms of multiple influencing factors, such as the irradiation dose, corrosion type, and environmental temperature, are summarized in this paper. Conceptual approaches are proposed to alleviate the synergistic damage caused by irradiation and corrosion, thereby promoting in-depth research in the future and solving this key challenge for the structural materials used in reactors.

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“…Recently, there have been research efforts to apply LPBF in the power generation industry, where discontinued and damaged components need to be supplied quickly and accurately [8]. Power plant components are continuously exposed to extreme environments, so materials with excellent heat resistances and mechanical strengths, such as stainless steel, are used [9]. In particular, stainless steel is one of the widely used materials in 3D printing owing to its excellent mechanical properties, corrosion resistance, and high-temperature stability [10].…”

Section: Introductionmentioning

confidence: 99%

Mechanical behaviors and wear resistances of 3D-printed AISI 321 components for combustor swirler applications

Lee,

Jang,

Kim

et al. 2024

Phys. Scr.

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This comprehensive study investigates the mechanical behaviors and wear characteristics of 3D-printed AISI 321, with a specific focus on its applicability in combustion swirler components for the power generation industry. Through meticulous exploration of various process parameters and postprocessing techniques, valuable insights were gained into the performance disparities between layered and cast specimens. Analyses revealed intriguing comparisons of key data points: while layered specimens exhibited higher surface roughness (4.37 μm), they demonstrated a lower friction coefficient (0.26) yet a higher wear rate (4.79 × 10−7 mm3/N·mm) compared to their cast specimens. Further investigation into the influence of layering direction unveiled that horizontally layered specimens presented smoother surfaces (0.26 μm), higher hardness (340 HV 1), and improved wear resistance (2.61 × 10−7 mm3/N·mm) compared to vertically layered specimens. Furthermore, the study examined the friction and wear characteristics of layered specimens based on the contact surface, including the top, side, and bottom surfaces. Lastly, a comparison of the mechanical behavior and friction/wear characteristics of layered specimens and cast specimens was conducted, demonstrating that the layered specimens fabricated using the Laser Powder Bed Fusion (LPBF) method exhibited superior performance. These findings underscore the significant potential of 3D-printed AISI 321 in enhancing performance and sustainability in power generation applications, while highlighting the ongoing need for continued research and development to fully exploit the capabilities of additive manufacturing technologies.

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Corrosion resistance of 316 stainless steel in a simulated pressurized water reactor improved by laser cladding with chromium

Cited by 15 publications

References 46 publications

Development of saga (Abrus precatorius) seed extract as a green corrosion inhibitor in API 5l Grade B under 1m HCL solutions

Development of saga (Abrus precatorius) seed extract as a green corrosion inhibitor in API 5l Grade B under 1m HCL solutions

Review on synergistic damage effect of irradiation and corrosion on reactor structural alloys

Mechanical behaviors and wear resistances of 3D-printed AISI 321 components for combustor swirler applications

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