Benchmarking of additive manufacturing technologies for commerciallypure-titanium bone-tissue-engineering scaffolds: processing-microstructureproperty relationship

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14110%2F20%3A00117940" target="_blank" >RIV/00216224:14110/20:00117940 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26620/20:PU137232

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2214860420308885?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2214860420308885?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.addma.2020.101516" target="_blank" >10.1016/j.addma.2020.101516</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Benchmarking of additive manufacturing technologies for commerciallypure-titanium bone-tissue-engineering scaffolds: processing-microstructureproperty relationship

Popis výsledku v původním jazyce

This work provides the benchmarking of two additive manufacturing (AM) technologies suitable for the fabrication of commercially pure titanium scaffolds for bone tissue engineering, i.e., selective laser melting (SLM) and robocasting. SLM is a powder bed fusion technique that is industrially used for the AM of titanium parts, whereas robocasting is an extrusion technique mainly studied for the fabrication of ceramic scaffolds that requires post-sintering for the consolidation. A novelty of this work is to combine robocasting with pressure-less spark plasma sintering (PL-SPS) for the fabrication and fast consolidation of titanium scaffolds. The results show that the metallurgical phenomena occurring in both techniques are different. Melting and fast solidification in SLM produced martensitic-like microstructure of titanium with low microporosity (6 %). In contrast, solid-state sintering in robocasting resulted in the equiaxed grain microstructure of alpha titanium phase with 13 % of microporosity. The mechanical performance of the scaffolds was determined by the microporosity of the rods rather than microstructure. Consequently, robocasting resulted in lower compressive yield strength and effective elastic modulus than SLM, which were in the range of human trabecular bone. Finally, both AM technologies produced cytocompatible scaffolds that showed evidence of in vitro osteogenic activity.

Název v anglickém jazyce

Benchmarking of additive manufacturing technologies for commerciallypure-titanium bone-tissue-engineering scaffolds: processing-microstructureproperty relationship

Popis výsledku anglicky

This work provides the benchmarking of two additive manufacturing (AM) technologies suitable for the fabrication of commercially pure titanium scaffolds for bone tissue engineering, i.e., selective laser melting (SLM) and robocasting. SLM is a powder bed fusion technique that is industrially used for the AM of titanium parts, whereas robocasting is an extrusion technique mainly studied for the fabrication of ceramic scaffolds that requires post-sintering for the consolidation. A novelty of this work is to combine robocasting with pressure-less spark plasma sintering (PL-SPS) for the fabrication and fast consolidation of titanium scaffolds. The results show that the metallurgical phenomena occurring in both techniques are different. Melting and fast solidification in SLM produced martensitic-like microstructure of titanium with low microporosity (6 %). In contrast, solid-state sintering in robocasting resulted in the equiaxed grain microstructure of alpha titanium phase with 13 % of microporosity. The mechanical performance of the scaffolds was determined by the microporosity of the rods rather than microstructure. Consequently, robocasting resulted in lower compressive yield strength and effective elastic modulus than SLM, which were in the range of human trabecular bone. Finally, both AM technologies produced cytocompatible scaffolds that showed evidence of in vitro osteogenic activity.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21100 - Other engineering and technologies

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

ADDITIVE MANUFACTURING

ISSN

2214-8604

e-ISSN

2214-7810

Svazek periodika

36

Číslo periodika v rámci svazku

DEC 2020

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

13

Strana od-do

1-13

Kód UT WoS článku

000600807800102

EID výsledku v databázi Scopus

2-s2.0-85090421883