Evolution of corrosion products on ASTM A36 and AISI 304L steels formed in exposure to molten NaNO3–KNO3 eutectic salt: Electrochemical study

Pineda, Fabiola; Walczak, Magdalena; Vilchez, F.Girela; Guerra, Carolina; Escobar, Rodrigo; Sancy, Mamié

doi:10.1016/j.corsci.2021.110047

Cited by 11 publications

(4 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Figure 9 reveals a capacitive response with two or three time constants at all frequency ranges, possibly associated with the formation of an oxide film and oxygen reduction reaction. Additionally, the Bode plots revealed a higher impedance modulus at the LF range when CeO 2 –NPs were added, which can be related to the polarization resistance of the system, suggesting an enhancement of the corrosion resistance due to the incorporation of the CeO 2 –NPs to the Cu–50Ni–5Al matrix [ 27 , 28 , 29 ]. Moreover, Figure 9 shows the non–corrected ( ) and corrected Bode plots by electrolyte resistance ( ), revealing that this effect is mainly in the high frequency range.…”

Section: Resultsmentioning

confidence: 99%

“…As can be seen at E = EOC, the impedance responses reveal two time constants at high and low frequency ranges (HF and LF), which can be associated with the cathodic current, not only involving the capacitance of the electric double layer (Cdl) and the oxygen reduction reaction, but also the formation of an oxide layer due to the alloy dissolution. Different equivalent circuits have been proposed to represent the physical model, which can be composed of capacitors, resistances, and constant phase elements (CPE) related to the heterogeneity of the surface [27]. Figure 9 shows the Bode plots of Cu−50Ni−5Al + 1 wt.% CeO2−NPs after 1 h of exposure to Li2CO3−K2CO3 in an aerated atmosphere at E = EOC and 550 °C, as a representative example of the study system.…”

Section: Microstructural and Chemical Characterizationmentioning

confidence: 99%

See 1 more Smart Citation

The Effect of Adding CeO2 Nanoparticles to Cu–Ni–Al Alloy for High Temperatures Applications

Martínez,

Arcos,

Briones

et al. 2024

Nanomaterials

Self Cite

View full text Add to dashboard Cite

This work presents the effect of CeO2 nanoparticles (CeO2–NPs) on Cu–50Ni–5Al alloys on morphological, microstructural, degradation, and electrochemical behavior at high temperatures. The samples obtained by mechanical alloying and spark plasma sintering were exposed to a molten eutectic mixture of Li2CO3–K2CO3 for 504 h. The degradation of the materials was analyzed using gravimetry measurements and electrochemical impedance spectroscopy. Different characterization techniques, such as X-ray diffraction and scanning electron microscopy, were used to investigate the phase composition, parameter lattice, and microstructure of Cu–Ni–Al alloys reinforced with CeO2–NPs. The hardness of the composite was also examined using the Vickers hardness test. Gravimetry measurements revealed that the sample with 1 wt.% CeO2–NPs presented the best response to degradation with a less drastic mass variation. Impedance analysis also revealed that by adding 1 wt.% CeO2–NPs, the impedance modulus increased, which is related to a lower porosity of the oxide film or a thicker oxide layer. The microhardness also significantly increased, incorporating 1 wt.% CeO2–NPs, which reduced with higher CeO2–NPs content, which is possibly associated with a more uniform distribution using 1 wt.% CeO2–NPs in the Cu–Ni–Al matrix that avoided the aggregation phenomenon.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Microstructural and Chemical Characterizationmentioning

confidence: 99%

The Effect of Adding CeO2 Nanoparticles to Cu–Ni–Al Alloy for High Temperatures Applications

Martínez,

Arcos,

Briones

et al. 2024

Nanomaterials

Self Cite

View full text Add to dashboard Cite

show abstract

“…5f was selected to fit the EIS spectra obtained by the coating after adding the corrosion inhibitor. 46 The specific electrochemical parameters are listed in Table 1. Due to the dispersion effect, the constant phase element Q was used instead of the capacitance calculated using eqn (1).…”

Section: Anticorrosion Performance Of G-c 3 N 4 /Wo 3 Heterojunctionsmentioning

confidence: 99%

Construction and excellent photoelectric synergistic anticorrosion performance of Z-scheme carbon nitride/tungsten oxide heterojunctions

Guo

Zhou

et al. 2022

Nanoscale

View full text Add to dashboard Cite

show abstract

“…menggunakan metode pengujian yaitu pengujian tensile test (Kurniawan et al, 2016). Pada pengujian ini akan diketahui berapa besar nilai energi yang diserap oleh benda uji yang nanti akan diolah dengan menggunakan perhitungan agar didapatkan rata-rata nilai kekuatan tensile, untuk mengetahui pengaruh kekuatan sambungan dengan beberapa variasi kuat arus (Pineda et al, 2022).…”

Section: Metode Penelitianunclassified

Pengaruh Variasi Kuat Arus Pengelasan SMAW Terhadap Uji Tarik Sambungan Bahan ASTM A36

Nawiko

Rosehan

Lubis

2022

SLJIL

View full text Add to dashboard Cite

Pengelasan Dalam industri manufaktur yang banyak menyangkut penggunaan baja dan logam, secara khusus dalam bidang pembangunan dengan memanfaatkan proses pengelasan maka akan sangant dibutuhkan berbagai penelitian dengan tujuan agar mendapatkan sambungan las yang memiliki mutu tinggi. Penelitian ini bertujuan untuk mengetahui dan melihat hasil dari kekuatan sambungan pengelasan pada material ASTM A36 dengan cara memberikan beberapa variasi kuat arus 80 A, 100 A dan 120 A dengan menggunakan metode pengujian yaitu pengujian tensile test. Berdasarkan hasil pengujian tarik yang telah dilakukan dengan menggunakan pengelasan SMAW memiliki kekuatan teganagan tarik yang baik pada kuat arus 120 A dengan nilai tegangan tarik sebesar 472,33 Pa. kekuatan sambungan las juga akan sangat dipengaruhi oleh waktu pengelasan dan panas yang diterima oleh benda atau bahan uji

show abstract

Evolution of corrosion products on ASTM A36 and AISI 304L steels formed in exposure to molten NaNO3–KNO3 eutectic salt: Electrochemical study

Cited by 11 publications

References 44 publications

The Effect of Adding CeO2 Nanoparticles to Cu–Ni–Al Alloy for High Temperatures Applications

The Effect of Adding CeO2 Nanoparticles to Cu–Ni–Al Alloy for High Temperatures Applications

Construction and excellent photoelectric synergistic anticorrosion performance of Z-scheme carbon nitride/tungsten oxide heterojunctions

Pengaruh Variasi Kuat Arus Pengelasan SMAW Terhadap Uji Tarik Sambungan Bahan ASTM A36

Contact Info

Product

Resources

About