Modulated Laser Cladding of Implant-Type Coatings by Bovine-Bone-Derived Hydroxyapatite Powder Injection on Ti6Al4V Substrates—Part I: Fabrication and Physico-Chemical Characterization

The surface physico-chemistry of metallic implants governs their successful long-term functionality for orthopedic and dentistry applications. Here, we investigated the feasibility of harmoniously combining two of the star materials currently employed in bone treatment/restoration, namely, calcium-p...

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Main Authors: Aura-Cătălina Mocanu, Florin Miculescu, George E. Stan, Iuliana Pasuk, Teddy Tite, Alexandru Pascu, Tudor Mihai Butte, Lucian-Toma Ciocan
Format: Article
Language:English
Published: MDPI AG 2022-11-01
Series:Materials
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Online Access:https://www.mdpi.com/1996-1944/15/22/7971
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author Aura-Cătălina Mocanu
Florin Miculescu
George E. Stan
Iuliana Pasuk
Teddy Tite
Alexandru Pascu
Tudor Mihai Butte
Lucian-Toma Ciocan
author_facet Aura-Cătălina Mocanu
Florin Miculescu
George E. Stan
Iuliana Pasuk
Teddy Tite
Alexandru Pascu
Tudor Mihai Butte
Lucian-Toma Ciocan
author_sort Aura-Cătălina Mocanu
collection DOAJ
description The surface physico-chemistry of metallic implants governs their successful long-term functionality for orthopedic and dentistry applications. Here, we investigated the feasibility of harmoniously combining two of the star materials currently employed in bone treatment/restoration, namely, calcium-phosphate-based bioceramics (in the form of coatings that have the capacity to enhance osseointegration) and titanium alloys (used as bulk implant materials due to their mechanical performance and lack of systemic toxicity). For the first time, bovine-bone-derived hydroxyapatite (BHA) was layered on top of Ti6Al4V substrates using powder injection laser cladding technology, and then subjected, in this first stage of the research, to an array of physical-chemical analyses. The laser processing set-up involved the conjoined modulation of the BHA-to-Ti ratio (100 wt.% and 50 wt.%) and beam power range (500–1000 W). As such, on each metallic substrate, several overlapped strips were produced and the external surface of the cladded coatings was further investigated. The morphological and compositional (SEM/EDS) evaluations exposed fully covered metallic surfaces with ceramic-based materials, without any fragmentation and with a strong metallurgical bond. The structural (XRD, micro-Raman) analyses showed the formation of calcium titanate as the main phase up to maximum 800 W, accompanied by partial BHA decomposition and the consequential advent of tetracalcium phosphate (markedly above 600 W), independent of the BHA ratio. In addition, the hydrophilic behavior of the coatings was outlined, being linked to the varied surface textures and phase dynamism that emerged due to laser power increment for both of the employed BHA ratios. Hence, this research delineates a series of optimal laser cladding technological parameters for the adequate deposition of bioceramic layers with customized functionality.
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spelling doaj.art-4e51b7a1fb074ab4a810a0fac041ca5e2023-11-24T09:02:01ZengMDPI AGMaterials1996-19442022-11-011522797110.3390/ma15227971Modulated Laser Cladding of Implant-Type Coatings by Bovine-Bone-Derived Hydroxyapatite Powder Injection on Ti6Al4V Substrates—Part I: Fabrication and Physico-Chemical CharacterizationAura-Cătălina Mocanu0Florin Miculescu1George E. Stan2Iuliana Pasuk3Teddy Tite4Alexandru Pascu5Tudor Mihai Butte6Lucian-Toma Ciocan7Department of Metallic Materials Science, Physical Metallurgy, University Politehnica of Bucharest, 313 Splaiul Independentei, J Building, RO-060042 Bucharest, RomaniaDepartment of Metallic Materials Science, Physical Metallurgy, University Politehnica of Bucharest, 313 Splaiul Independentei, J Building, RO-060042 Bucharest, RomaniaNational Institute of Materials Physics, 405A Atomistilor Street, RO-077125 Măgurele, RomaniaNational Institute of Materials Physics, 405A Atomistilor Street, RO-077125 Măgurele, RomaniaNational Institute of Materials Physics, 405A Atomistilor Street, RO-077125 Măgurele, RomaniaDepartment of Materials Engineering and Welding, University Transilvania of Brasov, 29 Eroilor Blvd., RO-500036 Brasov, RomaniaDepartment of Metallic Materials Science, Physical Metallurgy, University Politehnica of Bucharest, 313 Splaiul Independentei, J Building, RO-060042 Bucharest, RomaniaProsthetics Technology and Dental Materials Department, “Carol Davila” University of Medicine and Pharmacy, 37 Dionisie Lupu Street, RO-020022 Bucharest, RomaniaThe surface physico-chemistry of metallic implants governs their successful long-term functionality for orthopedic and dentistry applications. Here, we investigated the feasibility of harmoniously combining two of the star materials currently employed in bone treatment/restoration, namely, calcium-phosphate-based bioceramics (in the form of coatings that have the capacity to enhance osseointegration) and titanium alloys (used as bulk implant materials due to their mechanical performance and lack of systemic toxicity). For the first time, bovine-bone-derived hydroxyapatite (BHA) was layered on top of Ti6Al4V substrates using powder injection laser cladding technology, and then subjected, in this first stage of the research, to an array of physical-chemical analyses. The laser processing set-up involved the conjoined modulation of the BHA-to-Ti ratio (100 wt.% and 50 wt.%) and beam power range (500–1000 W). As such, on each metallic substrate, several overlapped strips were produced and the external surface of the cladded coatings was further investigated. The morphological and compositional (SEM/EDS) evaluations exposed fully covered metallic surfaces with ceramic-based materials, without any fragmentation and with a strong metallurgical bond. The structural (XRD, micro-Raman) analyses showed the formation of calcium titanate as the main phase up to maximum 800 W, accompanied by partial BHA decomposition and the consequential advent of tetracalcium phosphate (markedly above 600 W), independent of the BHA ratio. In addition, the hydrophilic behavior of the coatings was outlined, being linked to the varied surface textures and phase dynamism that emerged due to laser power increment for both of the employed BHA ratios. Hence, this research delineates a series of optimal laser cladding technological parameters for the adequate deposition of bioceramic layers with customized functionality.https://www.mdpi.com/1996-1944/15/22/7971laser claddingbioceramic coatingbiological HApowder injectionlaser power
spellingShingle Aura-Cătălina Mocanu
Florin Miculescu
George E. Stan
Iuliana Pasuk
Teddy Tite
Alexandru Pascu
Tudor Mihai Butte
Lucian-Toma Ciocan
Modulated Laser Cladding of Implant-Type Coatings by Bovine-Bone-Derived Hydroxyapatite Powder Injection on Ti6Al4V Substrates—Part I: Fabrication and Physico-Chemical Characterization
Materials
laser cladding
bioceramic coating
biological HA
powder injection
laser power
title Modulated Laser Cladding of Implant-Type Coatings by Bovine-Bone-Derived Hydroxyapatite Powder Injection on Ti6Al4V Substrates—Part I: Fabrication and Physico-Chemical Characterization
title_full Modulated Laser Cladding of Implant-Type Coatings by Bovine-Bone-Derived Hydroxyapatite Powder Injection on Ti6Al4V Substrates—Part I: Fabrication and Physico-Chemical Characterization
title_fullStr Modulated Laser Cladding of Implant-Type Coatings by Bovine-Bone-Derived Hydroxyapatite Powder Injection on Ti6Al4V Substrates—Part I: Fabrication and Physico-Chemical Characterization
title_full_unstemmed Modulated Laser Cladding of Implant-Type Coatings by Bovine-Bone-Derived Hydroxyapatite Powder Injection on Ti6Al4V Substrates—Part I: Fabrication and Physico-Chemical Characterization
title_short Modulated Laser Cladding of Implant-Type Coatings by Bovine-Bone-Derived Hydroxyapatite Powder Injection on Ti6Al4V Substrates—Part I: Fabrication and Physico-Chemical Characterization
title_sort modulated laser cladding of implant type coatings by bovine bone derived hydroxyapatite powder injection on ti6al4v substrates part i fabrication and physico chemical characterization
topic laser cladding
bioceramic coating
biological HA
powder injection
laser power
url https://www.mdpi.com/1996-1944/15/22/7971
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