In Vitro Biodegradation of a-C:H:SiOx Films on Ti-6Al-4V Alloy
| Parent link: | Materials Vol. 15, iss. 12.— 2022.— [4239, 17 p.] |
|---|---|
| Collectivité auteur: | |
| Autres auteurs: | , , , , , , , , |
| Résumé: | Title screen This paper focuses mainly on the in vitro study of a five-week biodegradation of a-C:H:SiOx films of different thickness, obtained by plasma-assisted chemical vapor deposition onto Ti-6Al-4V alloy substrate using its pulsed bipolar biasing. In vitro immersion of a-C:H:SiOx films in a solution of 0.9% NaCl was used. It is shown how the a-C:H:SiOx film thickness (0.5-3 µm) affects the surface morphology, adhesive strength, and Na+ and Cl− precipitation on the film surface from the NaCl solution. With increasing film thickness, the roughness indices are reducing a little. The adhesive strength of the a-C:H:SiOx films to metal substrate corresponds to quality HF1 (0.5 µm in thickness) and HF2-HF3 (1.5-3 µm in thickness) of the Rockwell hardness test (VDI 3198) that defines strong interfacial adhesion and is usually applied in practice. The morphometric analysis of the film surface shows that on a-C:H:SiOx-coated Ti-6Al-4V alloy surface, the area occupied by the grains of sodium chloride is lower than on the uncoated surface. The reduction in the ion precipitation from 0.9% NaCl onto the film surface depended on the elemental composition of the surface layer conditioned by the thickness growth of the a-C:H:SiOx film. Based on the results of energy dispersive X-ray spectroscopy, the multiple regression equations are suggested to explain the effect of the elemental composition of the a-C:H:SiOx film on the decreased Na+ and Cl− precipitation. As a result, the a-C:H:SiOx films successfully combine good adhesion strength and rare ion precipitation and thus are rather promising for medical applications on cardiovascular stents and/or friction parts of heart pumps. |
| Langue: | anglais |
| Publié: |
2022
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| Sujets: | |
| Accès en ligne: | https://doi.org/10.3390/ma15124239 |
| Format: | Électronique Chapitre de livre |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=668245 |
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| 200 | 1 | |a In Vitro Biodegradation of a-C:H:SiOx Films on Ti-6Al-4V Alloy |f A. S. Grenaderov, A. Solovyev, K. V. Oskomov [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 55 tit.] | ||
| 330 | |a This paper focuses mainly on the in vitro study of a five-week biodegradation of a-C:H:SiOx films of different thickness, obtained by plasma-assisted chemical vapor deposition onto Ti-6Al-4V alloy substrate using its pulsed bipolar biasing. In vitro immersion of a-C:H:SiOx films in a solution of 0.9% NaCl was used. It is shown how the a-C:H:SiOx film thickness (0.5-3 µm) affects the surface morphology, adhesive strength, and Na+ and Cl− precipitation on the film surface from the NaCl solution. With increasing film thickness, the roughness indices are reducing a little. The adhesive strength of the a-C:H:SiOx films to metal substrate corresponds to quality HF1 (0.5 µm in thickness) and HF2-HF3 (1.5-3 µm in thickness) of the Rockwell hardness test (VDI 3198) that defines strong interfacial adhesion and is usually applied in practice. The morphometric analysis of the film surface shows that on a-C:H:SiOx-coated Ti-6Al-4V alloy surface, the area occupied by the grains of sodium chloride is lower than on the uncoated surface. The reduction in the ion precipitation from 0.9% NaCl onto the film surface depended on the elemental composition of the surface layer conditioned by the thickness growth of the a-C:H:SiOx film. Based on the results of energy dispersive X-ray spectroscopy, the multiple regression equations are suggested to explain the effect of the elemental composition of the a-C:H:SiOx film on the decreased Na+ and Cl− precipitation. As a result, the a-C:H:SiOx films successfully combine good adhesion strength and rare ion precipitation and thus are rather promising for medical applications on cardiovascular stents and/or friction parts of heart pumps. | ||
| 461 | |t Materials | ||
| 463 | |t Vol. 15, iss. 12 |v [4239, 17 p.] |d 2022 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a diamond-like nanocomposite | |
| 610 | 1 | |a a-C:H:SiOx film | |
| 610 | 1 | |a adhesion | |
| 610 | 1 | |a five-week biodegradation | |
| 610 | 1 | |a 0.9% NaCl solution | |
| 610 | 1 | |a алмазоподобные соединения | |
| 610 | 1 | |a нанокомпозиты | |
| 610 | 1 | |a адгезия | |
| 701 | 1 | |a Grenaderov |b A. S. |g Aleksandr Sergeevich | |
| 701 | 1 | |a Solovyev |b A. |g Andrey | |
| 701 | 1 | |a Oskomov |b K. V. |g Konstantin Vladimirovich | |
| 701 | 1 | |a Porokhova |b E. |g Ekaterina | |
| 701 | 1 | |a Brazovsky (Brazovskii) |b K. S. |c specialist in the field of electronics |c candidate of medical Sciences, associate Professor Tomsk Polytechnic University |f 1971- |g Konstantin Stanislavovich |3 (RuTPU)RU\TPU\pers\36870 |9 19899 | |
| 701 | 1 | |a Gorokhova |b A. V. |g Anna Viktorovna | |
| 701 | 1 | |a Nasibov |b T. |g Temur | |
| 701 | 1 | |a Litvinova |b L. |g Larisa | |
| 701 | 1 | |a Khlusov |b I. A. |c biophysicist |c Professor of Tomsk Polytechnic University, doctor of medical Sciences |f 1963- |g Igor Albertovich |3 (RuTPU)RU\TPU\pers\34907 |9 18225 | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Исследовательская школа химических и биомедицинских технологий |c (2017- ) |3 (RuTPU)RU\TPU\col\23537 |
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