Corrosion behavior of hot rolled Mg-1.6Gd alloys as degradable materials implant

Oknovia Susanti, Sri Harjanto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The small addition of rare earth elements (REE) in magnesium have been investigated which can improve the corrosion properties. Gadolinium (Gd) element has a large solubility in Mg (23.49 wt % at 548 °C) so that could lead to multi-functionality of the designated alloys. The aim of this study is to determine corrosion rate on the hot rolled og Mg-1.6 Gd alloys with the different immersion time. Unidirectional rolling (UR) and Crossing rolling (CR) of the binary Mg-1.6Gd alloy ingots were prepared as a degradable materials implant. Hot rollied materials were observed in the temperature range of recrystallization (400-550 °C) with a speed of 10 mm min-1 and a total reduction of 95 % at 23.75 % per-stage. Corrosion experiments were investigated after 3, 7 and 14 days of immersion in Ringer solutions. Corrosion morphology was observed using optical, SEM and EDAX. The results show that the corrosion rate decrease with the increase immersion time and the higher temperature of hot rolled Mg-Gd alloys. It was found the amounts of Gd in Mg matrix. The highest corrosion rate significantly occurred for the short time immersion by pitting corrosion as the main damage which was not formed oxide layer yet as covering the Mg-Gd alloys. Detailed explanation of the corrosion rate on Mg-Gd alloys for different immersion time is discussion in this paper.

Original languageEnglish
Title of host publication3rd International Conference on Nuclear Energy Technologies and Sciences, ICoNETS 2019
EditorsGeni Rina Sunaryo, Surian Pinem, Julwan Hendry Purba, Tulis Jojok Suryono
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735419278
DOIs
Publication statusPublished - 10 Dec 2019
Event3rd International Conference on Nuclear Energy Technologies and Sciences, ICoNETS 2019 - Padang, Indonesia
Duration: 19 Sep 2019 → …

Publication series

NameAIP Conference Proceedings
Volume2180
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference3rd International Conference on Nuclear Energy Technologies and Sciences, ICoNETS 2019
CountryIndonesia
CityPadang
Period19/09/19 → …

Fingerprint Dive into the research topics of 'Corrosion behavior of hot rolled Mg-1.6Gd alloys as degradable materials implant'. Together they form a unique fingerprint.

  • Cite this

    Susanti, O., & Harjanto, S. (2019). Corrosion behavior of hot rolled Mg-1.6Gd alloys as degradable materials implant. In G. R. Sunaryo, S. Pinem, J. H. Purba, & T. J. Suryono (Eds.), 3rd International Conference on Nuclear Energy Technologies and Sciences, ICoNETS 2019 [020052] (AIP Conference Proceedings; Vol. 2180). American Institute of Physics Inc.. https://doi.org/10.1063/1.5135561