Crevice corrosion resistance of high alloyed materials in 3.5 % NaCl solution

Alar, Vesna; Stojanović, Ivan; Šimunović, Vinko; Novak, Tomislav

doi:10.3139/146.111073

Cited by 3 publications

(3 citation statements)

References 7 publications

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“…Although the corrosiveness of the natural seawater depends on many variable factors, the main cause of the corrosiveness of both natural seawater and 3.5% NaCl solution are chlorides that promote various corrosion processes, particularly at elevated temperatures [4].…”

Section: Introductionmentioning

confidence: 99%

Synergistic inhibition of carbon steel corrosion in seawater by cerium chloride and sodium gluconate

et al. 2015

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Section: Introductionmentioning

confidence: 99%

Synergistic inhibition of carbon steel corrosion in seawater by cerium chloride and sodium gluconate

et al. 2015

Self Cite

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“…The material has no propensity for the given boundary dispersion in welding due to the low concentration of silicon and carbon. This leads to the use of alloy in chemical processes with reducing and oxidizing media [1,2]. Many engineering applications, such as pollution control, (FGD units of coal-fired power plants, incinerators, scrubbers, and wastewater treatment), pharmaceutical industries, chemical industries producing fluorinated and chlorinated chemicals, paper, agrichemicals, marine, oil and gas industries benefit from alloy 59 [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Effect of constant current and pulsed current gas tungsten arc welding process on microstructure and mechanical properties of superalloy 59 joints

Nanjappan¹,

Gandhi²,

Kumar³

et al. 2022

Mater. Res. Express

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This research paper investigates the microstructure, microsegregation and mechanical behaviour of Ni-based superalloy 59 which is an important candidate in the pollution control application. The weld joints were produced with continuous current gas tungsten arc welding (CCGTAW) and pulsed current gas tungsten arc welding (PCGTAW) by applying both autogenous mode and filler wire ERNiCrMo-13. Weld flaws and weld aspect ratio of weld joints were identified using a macro analysis. An optical microscope (OM) and scanning electron microscope (SEM) were used to examine the microstructure of the welded joints. PCGTA weldments exposed refined grain structure, reduced heat-affected zone and narrow weld bead compared to CCGTAW. Microsegregation of the alloying elements at the weld center (WC) and weld interface (WI) was examined using Energy Dispersive X-ray spectroscopy (EDS). The findings of the metallurgical characterisation proved that the PCGTA weldments offer minimal microsegregation at the interdendritic region in comparison to CCGTA weldments. X-Ray Diffraction (XRD) examination reveals that there is a 16.7% enhancement in grain refinement in the autogenous mode and a 17.4% improvement in the filler wire ERNiCrMo-13 when switching from CCGTA to PCGTA welding. Tensile, Charpy impact and microhardness tests were used to assess the strength, toughness and hardness of the weld joints. Weld joints fabricated by PCGTAW offers higher tensile strength ( ̴ 1.4 to 1.6%), higher toughness ( ̴ 4.4 to 5.4%), and higher hardness ( ̴ 4.8 to 7.7%) than CCGTAW weld joints.

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“…Hot corrosion behavior of Monel has also been investigated [13]. The corrosion of Monel in aerated and deaerated sodium chloride solutions showed a higher corrosion rate in aerated solutions [14,15]. The Monel K alloy with 3% Al addition has been shown to be protective for sea water corrosion [16].…”

Section: Introductionmentioning

confidence: 99%

Corrosion Protection of Monel Alloy Coated with Graphene Quantum Dots Starts with a Surge

Bopp

Santhanam

2019

ChemEngineering

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There has been an active interest in protecting metals and alloys using graphene coating. The mechanism by which corrosion protection occurs has not been well understood as the couple involved are both good electron conductors. In this work, we demonstrate that Monel alloy coated with graphene quantum dots (GQD) changes the corrosion rate with a surge (increase) caused by the galvanic coupling of the two materials. This surge results in the protective layer formation on Monel to inhibit the corrosion. X-ray fluorescence spectrum of Monel (400) alloy showed the composition of it as Ni (67.05%) and Cu (29.42%). The Tafel experiments carried out in NaCl and Na2SO4 electrolytes showed an initial enhancement of the corrosion rate followed by a decrease upon successive polarizations. Monel coated with graphene oxide (an insulator) shows no initial enhancement of corrosion rate; the coated samples showed a lower corrosion rate in comparison to the uncoated samples. X-ray fluorescence, Fourier Transform spectroscopy (FTIR) and Raman imaging studies have been carried out for understanding this transformation. Distinct peaks due to Ni-O stretching and Ni-O-H bending vibration were observed in the FTIR spectrum.

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Crevice corrosion resistance of high alloyed materials in 3.5 % NaCl solution

Cited by 3 publications

References 7 publications

Synergistic inhibition of carbon steel corrosion in seawater by cerium chloride and sodium gluconate

Synergistic inhibition of carbon steel corrosion in seawater by cerium chloride and sodium gluconate

Effect of constant current and pulsed current gas tungsten arc welding process on microstructure and mechanical properties of superalloy 59 joints

Corrosion Protection of Monel Alloy Coated with Graphene Quantum Dots Starts with a Surge

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