Spark plasma sintering of load-bearing iron-carbon nanotube-tricalcium phosphate CerMets for orthopaedic applications

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F16%3APU116865" target="_blank" >RIV/00216305:26620/16:PU116865 - isvavai.cz</a>

Result on the web

<a href="http://link.springer.com/article/10.1007/s11837-015-1806-9" target="_blank" >http://link.springer.com/article/10.1007/s11837-015-1806-9</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11837-015-1806-9" target="_blank" >10.1007/s11837-015-1806-9</a>

Result language

angličtina

Original language name

Spark plasma sintering of load-bearing iron-carbon nanotube-tricalcium phosphate CerMets for orthopaedic applications

Original language description

Recently, ceramic-metallic composite materials (CerMets) have been investigated for orthopaedic applications with promising results. This first generation of bio-CerMets combine the bioactivity of hydroxyapatite with the mechanical stability of titanium to fabricate bioactive, tough and biomechanically more biocompatible osteosynthetic devices. Nonetheless, these first CerMets are not biodegradable materials and a second surgery is required to remove the implant after bone healing. The present work aims to develop the next generation bio-CerMets, which are potential biodegradable materials. Process to produce the new biodegradable CerMet consisted of mixing powder of soluble and osteoconductive alpha tricalcium phosphate with biocompatible and biodegradable iron and consolidation through spark plasma sintering (SPS) method. The microstructure, composition and mechanical strength of the new CerMet were studied by metallography, X-ray diffraction and diametral tensile strength test, respectively. The results show that SPS produces CerMet with higher mechanical performance (120 MPa) than the ceramic component alone (29 MPa) and similar mechanical strength to the pure metallic component (129 MPa). Nonetheless, although that short sintering time (10 min) was used, partial transformation of the alpha tricalcium phosphate into its allotropic and slightly less soluble beta phase was observed. Cell adhesion test shows that osteoblasts are able to attach to the CerMet surface, presenting spread morphology regardless of the component of the material with which they are in contact. However, the degradation process restricted to the small volume of the cell culture well quickly reduces the osteoblast viability.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

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

Name of the periodical

JOM

ISSN

1047-4838

e-ISSN

1543-1851

Volume of the periodical

68

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

9

Pages from-to

1134-1142

UT code for WoS article

000373131200012

EID of the result in the Scopus database

2-s2.0-84954193156