Influence of the amount of intermetallics on the degradation of Mg-Nd alloys under physiological conditions

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

Standard

Influence of the amount of intermetallics on the degradation of Mg-Nd alloys under physiological conditions. / Zhang, Yaping; Huang, Yuanding; Feyerabend, Frank; Blawert, Carsten; Gan, Weimin; Maawad, Emad; You, Sihang; Gavras, Sarkis; Scharnagl, Nico; Bode, Julia; Vogt, Carla; Zander, Daniela; Willumeit-Römer, Regine; Kainer, Karl Ulrich; Hort, Norbert.

in: Acta Biomaterialia, Jahrgang 121, 02.2021, S. 695-712.

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

Harvard

Zhang, Y, Huang, Y, Feyerabend, F, Blawert, C, Gan, W, Maawad, E, You, S, Gavras, S, Scharnagl, N, Bode, J, Vogt, C, Zander, D, Willumeit-Römer, R, Kainer, KU & Hort, N 2021, 'Influence of the amount of intermetallics on the degradation of Mg-Nd alloys under physiological conditions', Acta Biomaterialia, Jg. 121, S. 695-712. https://doi.org/10.1016/j.actbio.2020.11.050

APA

Zhang, Y., Huang, Y., Feyerabend, F., Blawert, C., Gan, W., Maawad, E., You, S., Gavras, S., Scharnagl, N., Bode, J., Vogt, C., Zander, D., Willumeit-Römer, R., Kainer, K. U., & Hort, N. (2021). Influence of the amount of intermetallics on the degradation of Mg-Nd alloys under physiological conditions. Acta Biomaterialia, 121, 695-712. https://doi.org/10.1016/j.actbio.2020.11.050

Vancouver

Bibtex

@article{7c331390e435405c869f4fc643b5ee47,
title = "Influence of the amount of intermetallics on the degradation of Mg-Nd alloys under physiological conditions",
abstract = "The influence of amount of intermetallics on the degradation of as-extruded Mg-Nd alloys with different contents of Nd was investigated via immersion testing in DMEM+10% FBS under cell culture conditions and subsequent microstructural characterizations. It is found that the presence of intermetallic particles Mg41Nd5 affects the corrosion of Mg-Nd alloys in two conflicting ways. One is their negative role that their existence enhances the micro-galvanic corrosion. Another is their positive role. Their existence favours the formation of a continuous and compact corrosion layer. At the early stage of immersion, their negative role predominated. The degradation rate of Mg-Nd alloys monotonously increases with increasing the amount of intermetallics. Mg-5Nd alloy with maximum amount of intermetallics suffered from the most severe corrosion. With the immersion proceeding (≥7 days), then the positive role of these intermetallic particles Mg41Nd5 could not be neglected. Owing to the interaction between their positive and negative roles, at the later stage of immersion the corrosion rate of Mg-Nd alloys first increases with increasing the content of Nd, then reaches to the maximum at 2 wt. % Nd. With a further increase of Nd content, a decrease in corrosion rate occurs. The main corrosion products on the surfaces of Mg-Nd alloys include carbonates, calcium-phosphate, neodymium oxide and/or neodymium hydroxide. They are amorphous at the early stage of immersion. With the immersion proceeding, they are transformed to crystalline. The existence of undegradable Mg41Nd5 particles in the corrosion layer can enhance the crystallization of such amorphous corrosion products.",
keywords = "Degradation, Intermetallic particles, Magnesium-neodymium alloys, Microstructure, Engineering",
author = "Yaping Zhang and Yuanding Huang and Frank Feyerabend and Carsten Blawert and Weimin Gan and Emad Maawad and Sihang You and Sarkis Gavras and Nico Scharnagl and Julia Bode and Carla Vogt and Daniela Zander and Regine Willumeit-R{\"o}mer and Kainer, {Karl Ulrich} and Norbert Hort",
year = "2021",
month = feb,
doi = "10.1016/j.actbio.2020.11.050",
language = "English",
volume = "121",
pages = "695--712",
journal = "Acta Biomaterialia",
issn = "1742-7061",
publisher = "Elsevier B.V.",

}

RIS

TY - JOUR

T1 - Influence of the amount of intermetallics on the degradation of Mg-Nd alloys under physiological conditions

AU - Zhang, Yaping

AU - Huang, Yuanding

AU - Feyerabend, Frank

AU - Blawert, Carsten

AU - Gan, Weimin

AU - Maawad, Emad

AU - You, Sihang

AU - Gavras, Sarkis

AU - Scharnagl, Nico

AU - Bode, Julia

AU - Vogt, Carla

AU - Zander, Daniela

AU - Willumeit-Römer, Regine

AU - Kainer, Karl Ulrich

AU - Hort, Norbert

PY - 2021/2

Y1 - 2021/2

N2 - The influence of amount of intermetallics on the degradation of as-extruded Mg-Nd alloys with different contents of Nd was investigated via immersion testing in DMEM+10% FBS under cell culture conditions and subsequent microstructural characterizations. It is found that the presence of intermetallic particles Mg41Nd5 affects the corrosion of Mg-Nd alloys in two conflicting ways. One is their negative role that their existence enhances the micro-galvanic corrosion. Another is their positive role. Their existence favours the formation of a continuous and compact corrosion layer. At the early stage of immersion, their negative role predominated. The degradation rate of Mg-Nd alloys monotonously increases with increasing the amount of intermetallics. Mg-5Nd alloy with maximum amount of intermetallics suffered from the most severe corrosion. With the immersion proceeding (≥7 days), then the positive role of these intermetallic particles Mg41Nd5 could not be neglected. Owing to the interaction between their positive and negative roles, at the later stage of immersion the corrosion rate of Mg-Nd alloys first increases with increasing the content of Nd, then reaches to the maximum at 2 wt. % Nd. With a further increase of Nd content, a decrease in corrosion rate occurs. The main corrosion products on the surfaces of Mg-Nd alloys include carbonates, calcium-phosphate, neodymium oxide and/or neodymium hydroxide. They are amorphous at the early stage of immersion. With the immersion proceeding, they are transformed to crystalline. The existence of undegradable Mg41Nd5 particles in the corrosion layer can enhance the crystallization of such amorphous corrosion products.

AB - The influence of amount of intermetallics on the degradation of as-extruded Mg-Nd alloys with different contents of Nd was investigated via immersion testing in DMEM+10% FBS under cell culture conditions and subsequent microstructural characterizations. It is found that the presence of intermetallic particles Mg41Nd5 affects the corrosion of Mg-Nd alloys in two conflicting ways. One is their negative role that their existence enhances the micro-galvanic corrosion. Another is their positive role. Their existence favours the formation of a continuous and compact corrosion layer. At the early stage of immersion, their negative role predominated. The degradation rate of Mg-Nd alloys monotonously increases with increasing the amount of intermetallics. Mg-5Nd alloy with maximum amount of intermetallics suffered from the most severe corrosion. With the immersion proceeding (≥7 days), then the positive role of these intermetallic particles Mg41Nd5 could not be neglected. Owing to the interaction between their positive and negative roles, at the later stage of immersion the corrosion rate of Mg-Nd alloys first increases with increasing the content of Nd, then reaches to the maximum at 2 wt. % Nd. With a further increase of Nd content, a decrease in corrosion rate occurs. The main corrosion products on the surfaces of Mg-Nd alloys include carbonates, calcium-phosphate, neodymium oxide and/or neodymium hydroxide. They are amorphous at the early stage of immersion. With the immersion proceeding, they are transformed to crystalline. The existence of undegradable Mg41Nd5 particles in the corrosion layer can enhance the crystallization of such amorphous corrosion products.

KW - Degradation

KW - Intermetallic particles

KW - Magnesium-neodymium alloys

KW - Microstructure

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=85097754659&partnerID=8YFLogxK

U2 - 10.1016/j.actbio.2020.11.050

DO - 10.1016/j.actbio.2020.11.050

M3 - Journal articles

C2 - 33279710

AN - SCOPUS:85097754659

VL - 121

SP - 695

EP - 712

JO - Acta Biomaterialia

JF - Acta Biomaterialia

SN - 1742-7061

ER -

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