Study of corrosion behavior and in vitro bioactivity of single NbSi2 and Duplex NbSi2/Nb5Si3 coatings on Nb substrates for biomedical applications
Single NbSi2 and duplex NbSi2/Nb5Si3 coatings were successfully applied on Nb substrates using halide activated pack cementation (HAPC) method at 1100 and 1300°C, respectively. Duplex NbSi2/Nb5Si3 coating with Nb5Si3 inner barrier layer, higher thickness, and lesser micro-cracks considerably decreas...
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| Format: | Article |
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Pleiades Publishing
2020
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| author | Daroonparvar, Mohammadreza Mat Yajid, M. Azizi Bakhsheshi-Rad, Hamid Reza Gupta, Rajeev Ismail, Ahmad Fauzi |
| author_facet | Daroonparvar, Mohammadreza Mat Yajid, M. Azizi Bakhsheshi-Rad, Hamid Reza Gupta, Rajeev Ismail, Ahmad Fauzi |
| author_sort | Daroonparvar, Mohammadreza |
| collection | ePrints |
| description | Single NbSi2 and duplex NbSi2/Nb5Si3 coatings were successfully applied on Nb substrates using halide activated pack cementation (HAPC) method at 1100 and 1300°C, respectively. Duplex NbSi2/Nb5Si3 coating with Nb5Si3 inner barrier layer, higher thickness, and lesser micro-cracks considerably decreased the infiltration of simulated body fluid (SBF) solution. This deduction was pertained to the high corrosion potential and lowest corrosion current density for the NbSi2/Nb5Si3 coated Nb alloy in corrosive solution. The Nb5Si3 inner barrier layer can protect the Nb substrate from corrosive solution when it passes through from NbSi2 top layer. Moreover, higher charge transfer resistance (Rct), impedance modulus at a low-frequency (|Z|) and phase angle were also observed for the duplex NbSi2/Nb5Si3 coated Nb alloy. On the other hand, in vitro bioactivity test indicated higher capability of apatite formation on the silicide coatings compared to uncoated Nb substrate in SBF solution. In fact, modification of chemical composition and surface morphology of Nb substrate surface can provide suitable nucleation sites for apatite formation and growth in SBF solution. |
| first_indexed | 2024-03-05T20:49:16Z |
| format | Article |
| id | utm.eprints-89936 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T20:49:16Z |
| publishDate | 2020 |
| publisher | Pleiades Publishing |
| record_format | dspace |
| spelling | utm.eprints-899362021-03-30T07:48:54Z http://eprints.utm.my/89936/ Study of corrosion behavior and in vitro bioactivity of single NbSi2 and Duplex NbSi2/Nb5Si3 coatings on Nb substrates for biomedical applications Daroonparvar, Mohammadreza Mat Yajid, M. Azizi Bakhsheshi-Rad, Hamid Reza Gupta, Rajeev Ismail, Ahmad Fauzi TP Chemical technology Single NbSi2 and duplex NbSi2/Nb5Si3 coatings were successfully applied on Nb substrates using halide activated pack cementation (HAPC) method at 1100 and 1300°C, respectively. Duplex NbSi2/Nb5Si3 coating with Nb5Si3 inner barrier layer, higher thickness, and lesser micro-cracks considerably decreased the infiltration of simulated body fluid (SBF) solution. This deduction was pertained to the high corrosion potential and lowest corrosion current density for the NbSi2/Nb5Si3 coated Nb alloy in corrosive solution. The Nb5Si3 inner barrier layer can protect the Nb substrate from corrosive solution when it passes through from NbSi2 top layer. Moreover, higher charge transfer resistance (Rct), impedance modulus at a low-frequency (|Z|) and phase angle were also observed for the duplex NbSi2/Nb5Si3 coated Nb alloy. On the other hand, in vitro bioactivity test indicated higher capability of apatite formation on the silicide coatings compared to uncoated Nb substrate in SBF solution. In fact, modification of chemical composition and surface morphology of Nb substrate surface can provide suitable nucleation sites for apatite formation and growth in SBF solution. Pleiades Publishing 2020-05 Article PeerReviewed Daroonparvar, Mohammadreza and Mat Yajid, M. Azizi and Bakhsheshi-Rad, Hamid Reza and Gupta, Rajeev and Ismail, Ahmad Fauzi (2020) Study of corrosion behavior and in vitro bioactivity of single NbSi2 and Duplex NbSi2/Nb5Si3 coatings on Nb substrates for biomedical applications. Protection of Metals and Physical Chemistry of Surfaces, 56 (3). pp. 628-637. ISSN 2070-2051 http://dx.doi.org/10.1134/S2070205120030120 |
| spellingShingle | TP Chemical technology Daroonparvar, Mohammadreza Mat Yajid, M. Azizi Bakhsheshi-Rad, Hamid Reza Gupta, Rajeev Ismail, Ahmad Fauzi Study of corrosion behavior and in vitro bioactivity of single NbSi2 and Duplex NbSi2/Nb5Si3 coatings on Nb substrates for biomedical applications |
| title | Study of corrosion behavior and in vitro bioactivity of single NbSi2 and Duplex NbSi2/Nb5Si3 coatings on Nb substrates for biomedical applications |
| title_full | Study of corrosion behavior and in vitro bioactivity of single NbSi2 and Duplex NbSi2/Nb5Si3 coatings on Nb substrates for biomedical applications |
| title_fullStr | Study of corrosion behavior and in vitro bioactivity of single NbSi2 and Duplex NbSi2/Nb5Si3 coatings on Nb substrates for biomedical applications |
| title_full_unstemmed | Study of corrosion behavior and in vitro bioactivity of single NbSi2 and Duplex NbSi2/Nb5Si3 coatings on Nb substrates for biomedical applications |
| title_short | Study of corrosion behavior and in vitro bioactivity of single NbSi2 and Duplex NbSi2/Nb5Si3 coatings on Nb substrates for biomedical applications |
| title_sort | study of corrosion behavior and in vitro bioactivity of single nbsi2 and duplex nbsi2 nb5si3 coatings on nb substrates for biomedical applications |
| topic | TP Chemical technology |
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