Characterization and corrosion behavior of Al–Co–rare earth (Ce–La) amorphous alloy

Seyed Ali Mousavi; Sayed Hamid Hashemi; Ali Ashrafi; Reza Shoja Razavi; Seyyed Mehdi Ghazi Mirsaeed

doi:10.1016/j.jre.2022.04.016

Characterization and corrosion behavior of Al–Co–rare earth (Ce–La) amorphous alloy

Seyed Ali Mousavi^*
, Sayed Hamid Hashemi^*
, Ali Ashrafi
, Reza Shoja Razavi
, Seyyed Mehdi Ghazi Mirsaeed

^*Corresponding author for this work

Research output: Journal Publication › Article › peer-review

20 Citations (Scopus)

Abstract

A new Al-based amorphous alloy with excellent corrosion resistance and high thermal stability was produced in the Al–Co–RE (Ce–La) system. In this regard, two different amorphous-nanocrystalline ribbons: Al_87.6–Co_6.4–Ce_3.8–La_2.2 (M₁) and Al_82.3–Co_10.1–Ce_4.8–La_2.8 (M₂) were prepared using melt spinning. The results reveal the supercooled liquid region (ΔT_x) of 218 °C which shows that the M₂ alloy has higher thermal stability in comparison to the M₁ alloy. The M₂ ribbons present the superior corrosion resistance because of the formation of amorphous phase. The i_corr, E_corr, E_pit, and E_pit – E_corr values of fully amorphous Al–Co–Ce–La metallic ribbons have a better trend of anti-corrosion performance compared to other crystalline and amorphous aluminum alloys.

Original language	English
Pages (from-to)	771-779
Number of pages	9
Journal	Journal of Rare Earths
Volume	41
Issue number	5
DOIs	https://doi.org/10.1016/j.jre.2022.04.016
Publication status	Published - May 2023
Externally published	Yes

Free Keywords

Amorphous alloys
Corrosion behavior
Melt-spinning
Rare earth metal

ASJC Scopus subject areas

General Chemistry
Geochemistry and Petrology

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10.1016/j.jre.2022.04.016

Cite this

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title = "Characterization and corrosion behavior of Al–Co–rare earth (Ce–La) amorphous alloy",

abstract = "A new Al-based amorphous alloy with excellent corrosion resistance and high thermal stability was produced in the Al–Co–RE (Ce–La) system. In this regard, two different amorphous-nanocrystalline ribbons: Al87.6–Co6.4–Ce3.8–La2.2 (M1) and Al82.3–Co10.1–Ce4.8–La2.8 (M2) were prepared using melt spinning. The results reveal the supercooled liquid region (ΔTx) of 218 °C which shows that the M2 alloy has higher thermal stability in comparison to the M1 alloy. The M2 ribbons present the superior corrosion resistance because of the formation of amorphous phase. The icorr, Ecorr, Epit, and Epit – Ecorr values of fully amorphous Al–Co–Ce–La metallic ribbons have a better trend of anti-corrosion performance compared to other crystalline and amorphous aluminum alloys.",

keywords = "Amorphous alloys, Corrosion behavior, Melt-spinning, Rare earth metal",

author = "Mousavi, \{Seyed Ali\} and Hashemi, \{Sayed Hamid\} and Ali Ashrafi and \{Shoja Razavi\}, Reza and \{Ghazi Mirsaeed\}, \{Seyyed Mehdi\}",

note = "Publisher Copyright: {\textcopyright} 2022 Chinese Society of Rare Earths",

year = "2023",

month = may,

doi = "10.1016/j.jre.2022.04.016",

language = "English",

volume = "41",

pages = "771--779",

journal = "Journal of Rare Earths",

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TY - JOUR

T1 - Characterization and corrosion behavior of Al–Co–rare earth (Ce–La) amorphous alloy

AU - Mousavi, Seyed Ali

AU - Hashemi, Sayed Hamid

AU - Ashrafi, Ali

AU - Shoja Razavi, Reza

AU - Ghazi Mirsaeed, Seyyed Mehdi

PY - 2023/5

Y1 - 2023/5

N2 - A new Al-based amorphous alloy with excellent corrosion resistance and high thermal stability was produced in the Al–Co–RE (Ce–La) system. In this regard, two different amorphous-nanocrystalline ribbons: Al87.6–Co6.4–Ce3.8–La2.2 (M1) and Al82.3–Co10.1–Ce4.8–La2.8 (M2) were prepared using melt spinning. The results reveal the supercooled liquid region (ΔTx) of 218 °C which shows that the M2 alloy has higher thermal stability in comparison to the M1 alloy. The M2 ribbons present the superior corrosion resistance because of the formation of amorphous phase. The icorr, Ecorr, Epit, and Epit – Ecorr values of fully amorphous Al–Co–Ce–La metallic ribbons have a better trend of anti-corrosion performance compared to other crystalline and amorphous aluminum alloys.

AB - A new Al-based amorphous alloy with excellent corrosion resistance and high thermal stability was produced in the Al–Co–RE (Ce–La) system. In this regard, two different amorphous-nanocrystalline ribbons: Al87.6–Co6.4–Ce3.8–La2.2 (M1) and Al82.3–Co10.1–Ce4.8–La2.8 (M2) were prepared using melt spinning. The results reveal the supercooled liquid region (ΔTx) of 218 °C which shows that the M2 alloy has higher thermal stability in comparison to the M1 alloy. The M2 ribbons present the superior corrosion resistance because of the formation of amorphous phase. The icorr, Ecorr, Epit, and Epit – Ecorr values of fully amorphous Al–Co–Ce–La metallic ribbons have a better trend of anti-corrosion performance compared to other crystalline and amorphous aluminum alloys.

KW - Amorphous alloys

KW - Corrosion behavior

KW - Melt-spinning

KW - Rare earth metal

UR - https://www.scopus.com/pages/publications/85134985728

U2 - 10.1016/j.jre.2022.04.016

DO - 10.1016/j.jre.2022.04.016

M3 - Article

AN - SCOPUS:85134985728

SN - 1002-0721

VL - 41

SP - 771

EP - 779

JO - Journal of Rare Earths

JF - Journal of Rare Earths

IS - 5

ER -

Characterization and corrosion behavior of Al–Co–rare earth (Ce–La) amorphous alloy

Abstract

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