Corrosion Resistance and Surface Bioactivity of Ti6Al4V Alloy after Finish Turning under Ecological Cutting Conditions
The influence of cooling conditions and surface topography after finish turning of Ti6Al4V titanium alloy on corrosion resistance and surface bioactivity was analyzed. The samples were machined under dry and minimum quantity lubrication (MQL) conditions to obtain different surface roughness. The sur...
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MDPI AG
2021
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oai:doaj.org-article:a57d6ef8051344a3b12fcb6ef3b8973e2021-11-25T18:14:52ZCorrosion Resistance and Surface Bioactivity of Ti6Al4V Alloy after Finish Turning under Ecological Cutting Conditions10.3390/ma142269171996-1944https://doaj.org/article/a57d6ef8051344a3b12fcb6ef3b8973e2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/6917https://doaj.org/toc/1996-1944The influence of cooling conditions and surface topography after finish turning of Ti6Al4V titanium alloy on corrosion resistance and surface bioactivity was analyzed. The samples were machined under dry and minimum quantity lubrication (MQL) conditions to obtain different surface roughness. The surface topographies of the processed samples were assessed and measured using an optical profilometer. The produced samples were subjected to electrochemical impedance spectroscopy (EIS) and corrosion potential tests (<i>E</i><sub>corr</sub>) in the presence of simulated body fluid (SBF). The surface bioactivity of the samples was assessed on the basis of images from scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS) analysis. The inspection of the surfaces of samples after turning under dry and MQL conditions revealed unevenly distributed precipitation of hydroxyapatite compounds (Ca/P) with a molar ratio in the range of 1.73–1.97. Regardless of the cutting conditions and surface roughness, the highest values of <i>E</i><sub>corr</sub> ~0 mV were recorded on day 7 of immersion in the SBF solution. The impedance characteristics showed that, compared to the MQL conditions, surfaces machined under dry conditions were characterized by greater resistance and the presence of a passive layer on the processed surface. The main novelty of the paper is the study of the effect of ecological machining conditions, namely, dry and MQL cutting on the corrosion resistance and surface bioactivity of Ti6Al4V titanium alloy after finish turning. The obtained research results have practical significance. They can be used by engineers during the development of technological processes for medical devices made of Ti6Al4V alloy to obtain favorable functional properties of these devices.Kamil LeksyckiAgnieszka Kaczmarek-PawelskaKamil OchałAndrzej GradzikDanil Yurievich PimenovKhaled GiasinDaniel ChuchalaSzymon WojciechowskiMDPI AGarticleTi6Al4V alloyfinish turningsurface topographycooling conditionscorrosion resistancesurface bioactivityTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6917, p 6917 (2021) |
| institution |
DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
Ti6Al4V alloy finish turning surface topography cooling conditions corrosion resistance surface bioactivity Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 |
| spellingShingle |
Ti6Al4V alloy finish turning surface topography cooling conditions corrosion resistance surface bioactivity Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Kamil Leksycki Agnieszka Kaczmarek-Pawelska Kamil Ochał Andrzej Gradzik Danil Yurievich Pimenov Khaled Giasin Daniel Chuchala Szymon Wojciechowski Corrosion Resistance and Surface Bioactivity of Ti6Al4V Alloy after Finish Turning under Ecological Cutting Conditions |
| description |
The influence of cooling conditions and surface topography after finish turning of Ti6Al4V titanium alloy on corrosion resistance and surface bioactivity was analyzed. The samples were machined under dry and minimum quantity lubrication (MQL) conditions to obtain different surface roughness. The surface topographies of the processed samples were assessed and measured using an optical profilometer. The produced samples were subjected to electrochemical impedance spectroscopy (EIS) and corrosion potential tests (<i>E</i><sub>corr</sub>) in the presence of simulated body fluid (SBF). The surface bioactivity of the samples was assessed on the basis of images from scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS) analysis. The inspection of the surfaces of samples after turning under dry and MQL conditions revealed unevenly distributed precipitation of hydroxyapatite compounds (Ca/P) with a molar ratio in the range of 1.73–1.97. Regardless of the cutting conditions and surface roughness, the highest values of <i>E</i><sub>corr</sub> ~0 mV were recorded on day 7 of immersion in the SBF solution. The impedance characteristics showed that, compared to the MQL conditions, surfaces machined under dry conditions were characterized by greater resistance and the presence of a passive layer on the processed surface. The main novelty of the paper is the study of the effect of ecological machining conditions, namely, dry and MQL cutting on the corrosion resistance and surface bioactivity of Ti6Al4V titanium alloy after finish turning. The obtained research results have practical significance. They can be used by engineers during the development of technological processes for medical devices made of Ti6Al4V alloy to obtain favorable functional properties of these devices. |
| format |
article |
| author |
Kamil Leksycki Agnieszka Kaczmarek-Pawelska Kamil Ochał Andrzej Gradzik Danil Yurievich Pimenov Khaled Giasin Daniel Chuchala Szymon Wojciechowski |
| author_facet |
Kamil Leksycki Agnieszka Kaczmarek-Pawelska Kamil Ochał Andrzej Gradzik Danil Yurievich Pimenov Khaled Giasin Daniel Chuchala Szymon Wojciechowski |
| author_sort |
Kamil Leksycki |
| title |
Corrosion Resistance and Surface Bioactivity of Ti6Al4V Alloy after Finish Turning under Ecological Cutting Conditions |
| title_short |
Corrosion Resistance and Surface Bioactivity of Ti6Al4V Alloy after Finish Turning under Ecological Cutting Conditions |
| title_full |
Corrosion Resistance and Surface Bioactivity of Ti6Al4V Alloy after Finish Turning under Ecological Cutting Conditions |
| title_fullStr |
Corrosion Resistance and Surface Bioactivity of Ti6Al4V Alloy after Finish Turning under Ecological Cutting Conditions |
| title_full_unstemmed |
Corrosion Resistance and Surface Bioactivity of Ti6Al4V Alloy after Finish Turning under Ecological Cutting Conditions |
| title_sort |
corrosion resistance and surface bioactivity of ti6al4v alloy after finish turning under ecological cutting conditions |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/a57d6ef8051344a3b12fcb6ef3b8973e |
| work_keys_str_mv |
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