PSI - Issue 40

Available online at www.sciencedirect.com Available online at www.sciencedirect.com Sci nceDirect Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 40 (2022) 207–213

© 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the15th International Conference on Mechanics, Resources and Diagnostics of Materials and Structures. Abstract The influence of the employing ultrasound (US) with different powers and waveforms during the micro-arc oxidation (MAO) on the formation of elemental composition and microstructure of the CaP coatings was studied. The energy-dispersive X-ray spectroscopy (EDX) revealed the following quantitative elemental composition of both the MAO and US-assisted MAO (UMAO) coatings: O (66- 70 аt.%); P (14 -16 at.%); Ti (11- 13 аt.%); Ca (4 - 5 аt.%). The transmission electron microscopy (TEM) revealed the amorphous-crystalline microstructure in both the coatings regardless of the application of US during the MAO. The nanocrystallites of the CаHPO 4 , β - Cа 2 P 2 O 7 , and TiO 2 (anatase) phases were observed in the coatings. In addition to these phases, a high- temperature metastable phase α -Ca 2 P 2 O 7 was detected in the UMAO coatings. © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures. Keywords: micro-arc oxidation, calcium phosphate coating, ultrasound, microstructure, elemental composition 1. Introduction In recent years, researchers are taking an extraordinary effort to focus on developing composites by mimicking the unique structure and composition of the bone tissue using various technologies (Wang et.al., 2019). Among other 15th International Conference on Mechanics, Resource and Diagnostics of Materials and Stru tures Microstructure and elemental composition of UMAO calcium phosphate coatings Ekaterina A. Kazantseva a,b *, Ekaterina G. Komarova a a Institute of Strength Physics and Materials Science SB RAS, 2/4 Akademicheskii pr., Tomsk, 634055, Russia b National Research Tomsk State U iv rsity, 36 Lenina pr., Toms , 634050, Russia Abstract The influence of the employing ultrasound (US) with different powers and waveforms during the micro-arc oxidation (MAO) on the formation of ele ental compositio and microstructure of the CaP coatings was studied. The energy- ispersive X-ray sp ctroscopy (EDX) r ve ed the followi g quantitative lemental comp si on of both the MAO and US-assi ted MAO (UMAO) coatings: O (66- 70 аt.%); P (14 -16 at.%); Ti (11- 13 аt.%); Ca (4 - 5 аt.%). The transmission electron micro copy (TEM) revealed the amorphous-crystalline microstruc ure in both the coatings regardless of the application of US during the MAO. The nanocrys allites f t e CаHPO 4 , β - Cа 2 P 2 O 7 , and TiO 2 (anatas ) phase w re observed in the co ngs. In ad itio to these phases, a high- temperature m tastable phase α -Ca 2 P 2 O 7 was detected in t e UMAO c atings. © 2022 The Authors. Publish d by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review u der re ponsibility of scientific committee of the15th International C ference on Mechanics, Resource and Diagnostics of Materials and S ructur s. Keywords: micro-arc oxidatio , calcium phosphate coating, ultrasound, microstructure, elemental composition 1. Introduction In recent years, researchers are taking an extraordinary effort to focus on developing composites by mimicking the uniqu structure and composition of the bone tissue using va ious te hn logi s (Wa et.al., 2019). A ong other 15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures Microstructure and elemental composition of UMAO calcium phosphate coatings Ekaterina A. Kazantseva a,b *, Ekaterina G. Komarova a a Institute of Strength Physics and Materials Science SB RAS, 2/4 Akademicheskii pr., Tomsk, 634055, Russia b National Research Tomsk State University, 36 Lenina pr., Tomsk, 634050, Russia

* Corresponding author. Tel.: +7-3822-286-809. E-mail address: kati10_95@mail.ru * Corresponding author. Tel.: +7-3822-286-809. E-mail ad ress: kati10_95@mail.ru

2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures. 2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review u der re ponsibility of scientific committe of the15th Int rnational C ference o Mechanics, Resource and Diagnostics of Mate ials and Structures.

2452-3216 © 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the15th International Conference on Mechanics, Resources and Diagnostics

of Materials and Structures. 10.1016/j.prostr.2022.04.028