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The influence of aging treatment on the corrosion behaviour of mg-4Y alloys in ringer’s solution
Bebali Gea F.G.a, Setiawan A.R.a, Sitanggang R.P.a
a Department of Materials Engineering, Faculty of Mechanical and Aerospace Engineering, Bandung Institute of Technology, Bandung, 40132, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2020 American Institute of Physics Inc.. All rights reserved.Pure magnesium has excellent biocompatibility and biodegradability in human’s body which is potential as bone implant. However, rapid degradation in physiological environment and considered low mechanical strength limit its biomedical application. Mechanical properties of magnesium can be effectively improved by alloying element. One of the attractive elements is Yttrium (Y) which are reported could improve the strength of Mg through precipitation strengthening by ß-Mg24Y5 particles. However, the existence of ß-Mg24Y5 phases in Mg matrix was reported to decrease the corrosion resistance of Mg-Y alloys due to formation of micro galvanic couple in the microstructures. This study aims to investigate the effect of aging time on corrosion performance of Mg-4Y alloys in Ringer solutions. Before aging, the alloy was solution treated at 250 oC for 6 hours. The aging treatment was carried out at 200 oC for 3, 6, 24, 48, 72, 96, and 120 hr. Corrosion testing was carried out by using immersion test in ringer’s lactate solution for 72 hr. The results show that the corrosion rate of the alloy decreases dramatically with the increase of aging time. Existence of ß-Mg24Y5 precipitates in the alloy observed by x-ray diffraction serves as a corrosion barrier and inhibits corrosion. The increase of ß-Mg24Y5 phase volume fraction with aging time was indicated by the increase in hardness and leads to the decrease of corrosion rate.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]This work was financially supported by the ITB Research Innovation Grant 2019 from Institute of Technology Bandung.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1063/5.0016277[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]