Corrosion, mechanical and biological properties of biodegradable WE43 alloy modified by Al ion implantation

Lianhui Li; Fugang Qi; Zhiqiang Zhang; Liwei Lu; Xiaoping Ouyang

doi:10.1016/j.ceramint.2022.10.056

Corrosion, mechanical and biological properties of biodegradable WE43 alloy modified by Al ion implantation

Lianhui Li
, Fugang Qi
, Zhiqiang Zhang
, Liwei Lu
, Xiaoping Ouyang

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

A high-energy metal vapor vacuum arc (MEVVA) ion source was used to implant aluminum (Al) ions into the WE43 alloy (Al-WE43) at a dose of 1 × 10¹⁶ ions·cm⁻², and the structural composition, mechanical properties, corrosion resistance, and biocompatibility of the alloy before and after implantation were systematically studied. The results showed that an Al₂O₃/Al thin film was formed on the surface of the WE43 alloy after Al ion implantation, and the dense film caused the corrosion current density (I_corr) of the alloy to decrease from 140.2 ± 9.3 to 17.9 ± 6.1 μA⋅cm⁻². Nanoindentation experiments revealed that the elastic model (EIT) and nano-hardness (HIT) of the Al-WE43 alloy were significantly improved due to the surface lattice distortion caused by Al ion implantation. A diluted extract of the Al-WE43 alloy showed higher cell activity, anti-hemolysis and anti-coagulation properties than that of the WE43 alloy. In general, the Al-WE43 alloy can be considered as a promising biodegradable metallic material for cardiovascular stent applications.

Original language	English
Pages (from-to)	5327-5334
Number of pages	8
Journal	Ceramics International
Volume	49
Issue number	3
DOIs	https://doi.org/10.1016/j.ceramint.2022.10.056
State	Published - 1 Feb 2023
Externally published	Yes

Keywords

Al ion implantation
Biocompatibility
Corrosion resistance
Mechanical properties
Mg alloy

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10.1016/j.ceramint.2022.10.056

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title = "Corrosion, mechanical and biological properties of biodegradable WE43 alloy modified by Al ion implantation",

abstract = "A high-energy metal vapor vacuum arc (MEVVA) ion source was used to implant aluminum (Al) ions into the WE43 alloy (Al-WE43) at a dose of 1 × 1016 ions·cm−2, and the structural composition, mechanical properties, corrosion resistance, and biocompatibility of the alloy before and after implantation were systematically studied. The results showed that an Al2O3/Al thin film was formed on the surface of the WE43 alloy after Al ion implantation, and the dense film caused the corrosion current density (Icorr) of the alloy to decrease from 140.2 ± 9.3 to 17.9 ± 6.1 μA⋅cm−2. Nanoindentation experiments revealed that the elastic model (EIT) and nano-hardness (HIT) of the Al-WE43 alloy were significantly improved due to the surface lattice distortion caused by Al ion implantation. A diluted extract of the Al-WE43 alloy showed higher cell activity, anti-hemolysis and anti-coagulation properties than that of the WE43 alloy. In general, the Al-WE43 alloy can be considered as a promising biodegradable metallic material for cardiovascular stent applications.",

keywords = "Al ion implantation, Biocompatibility, Corrosion resistance, Mechanical properties, Mg alloy",

author = "Lianhui Li and Fugang Qi and Zhiqiang Zhang and Liwei Lu and Xiaoping Ouyang",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd and Techna Group S.r.l.",

year = "2023",

month = feb,

day = "1",

doi = "10.1016/j.ceramint.2022.10.056",

language = "英语",

volume = "49",

pages = "5327--5334",

journal = "Ceramics International",

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TY - JOUR

T1 - Corrosion, mechanical and biological properties of biodegradable WE43 alloy modified by Al ion implantation

AU - Li, Lianhui

AU - Qi, Fugang

AU - Zhang, Zhiqiang

AU - Lu, Liwei

AU - Ouyang, Xiaoping

PY - 2023/2/1

Y1 - 2023/2/1

N2 - A high-energy metal vapor vacuum arc (MEVVA) ion source was used to implant aluminum (Al) ions into the WE43 alloy (Al-WE43) at a dose of 1 × 1016 ions·cm−2, and the structural composition, mechanical properties, corrosion resistance, and biocompatibility of the alloy before and after implantation were systematically studied. The results showed that an Al2O3/Al thin film was formed on the surface of the WE43 alloy after Al ion implantation, and the dense film caused the corrosion current density (Icorr) of the alloy to decrease from 140.2 ± 9.3 to 17.9 ± 6.1 μA⋅cm−2. Nanoindentation experiments revealed that the elastic model (EIT) and nano-hardness (HIT) of the Al-WE43 alloy were significantly improved due to the surface lattice distortion caused by Al ion implantation. A diluted extract of the Al-WE43 alloy showed higher cell activity, anti-hemolysis and anti-coagulation properties than that of the WE43 alloy. In general, the Al-WE43 alloy can be considered as a promising biodegradable metallic material for cardiovascular stent applications.

AB - A high-energy metal vapor vacuum arc (MEVVA) ion source was used to implant aluminum (Al) ions into the WE43 alloy (Al-WE43) at a dose of 1 × 1016 ions·cm−2, and the structural composition, mechanical properties, corrosion resistance, and biocompatibility of the alloy before and after implantation were systematically studied. The results showed that an Al2O3/Al thin film was formed on the surface of the WE43 alloy after Al ion implantation, and the dense film caused the corrosion current density (Icorr) of the alloy to decrease from 140.2 ± 9.3 to 17.9 ± 6.1 μA⋅cm−2. Nanoindentation experiments revealed that the elastic model (EIT) and nano-hardness (HIT) of the Al-WE43 alloy were significantly improved due to the surface lattice distortion caused by Al ion implantation. A diluted extract of the Al-WE43 alloy showed higher cell activity, anti-hemolysis and anti-coagulation properties than that of the WE43 alloy. In general, the Al-WE43 alloy can be considered as a promising biodegradable metallic material for cardiovascular stent applications.

KW - Al ion implantation

KW - Biocompatibility

KW - Corrosion resistance

KW - Mechanical properties

KW - Mg alloy

UR - https://www.scopus.com/pages/publications/85139724825

U2 - 10.1016/j.ceramint.2022.10.056

DO - 10.1016/j.ceramint.2022.10.056

M3 - 文章

AN - SCOPUS:85139724825

SN - 0272-8842

VL - 49

SP - 5327

EP - 5334

JO - Ceramics International

JF - Ceramics International

IS - 3

ER -

Corrosion, mechanical and biological properties of biodegradable WE43 alloy modified by Al ion implantation

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