Silver-Doped Hydroxyapatite Coatings Deposited from Suspensions via Plasma Spraying

0543758 - ÚFP 2022 RIV SG eng C - Conference Paper (international conference)
Čížek, Jan - Brožek, Vlastimil - Chráska, Tomáš - Lukáč, František - Medřický, Jan - Mušálek, Radek - Tesař, Tomáš - Šiška, Filip - Antoš, J. - Čupera, J. - Matějková, M. - Spotz, Z. - Houdková, Š. - Kverka, Miloslav
Silver-Doped Hydroxyapatite Coatings Deposited from Suspensions via Plasma Spraying.
Proceedings of the Asian Thermal Spray Conference. Nanyang: Institute of Materials, 2018. ISSN 2630-5208.
[9th Asian Thermal Spray Conférence. Nanyang (SG), 16.11.2018-18.11.2018]
R&D Projects: GA ČR GB14-36566G
Institutional support: RVO:61389021 ; RVO:68081723
Keywords : Suspension spray * in-situ coating formation * antibacterial * bioactive
OECD category: Materials engineering
http://www.materials.org.sg/ATSC2018_Proceedings/Manuscripts/ATSC-1003.pdf

In this paper, pure hydroxyapatite suspension was produced via wet chemical synthesis method. Using a hybrid water-stabilized torch, a series of HA coatings was then produced on Ti6Al4V substrates and their properties were characterized via SEM, EDX and XRD techniques. After the deposition, the amorphous phase content reached 6-10% and the coatings retained 75-82% of crystalline HA phase. Their thickness reached as much as 145 μm, i.e., suitable for bio-applications. Additionally, a set of HA coatings was prepared with pure metallic Ag content. For the first time, these formed via in-situ chemical decomposition of AgNO3 added into the suspension. The Ag was dispersed evenly within the coatings and its total content reached 8 wt.%. Such result presents a promising step forward in the hard tissue replacement research.
Permanent Link: http://hdl.handle.net/11104/0320904