Development of new beta/alpha ''-Ti-Nb-Zr biocompatible coating with low Young's modulus and high toughness for medical applications

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F18%3A43897439" target="_blank" >RIV/60076658:12310/18:43897439 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60077344:_____/18:00498454 RIV/68407700:21230/18:00320637 RIV/68407700:21340/18:00320637

Výsledek na webu

<a href="https://reader.elsevier.com/reader/sd/pii/S0264127518300145?token=57BBAC65D303FF0A790FAD0A09BE0605FE587DF31FF4997D6F31F5FCF7B20DB4EF8154EEFF2DFB246ABD2F79E6E1BCBA" target="_blank" >https://reader.elsevier.com/reader/sd/pii/S0264127518300145?token=57BBAC65D303FF0A790FAD0A09BE0605FE587DF31FF4997D6F31F5FCF7B20DB4EF8154EEFF2DFB246ABD2F79E6E1BCBA</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.matdes.2018.01.014" target="_blank" >10.1016/j.matdes.2018.01.014</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Development of new beta/alpha ''-Ti-Nb-Zr biocompatible coating with low Young's modulus and high toughness for medical applications

Popis výsledku v původním jazyce

Ideal biomaterials to fabricate orthopedic implants, especially for load-bearing joint replacements, should include only non-toxic elements with good biocompatibility, high corrosion resistance and surface bioactivity, together with a good combination of mechanical properties. Based on these criteria, a manufacturing approach based on sputtering techniques can be ideal to develop coatings free of toxic elements tailored for advanced applications on pure titanium or titanium alloys used in biomedical applications. In this work, the ternary Ti-Nb-Zr system was used to develop non-toxic beta-rich Ti coatings with several complex microstructures by careful control of Nb and Zr concentration and deposition parameters, such as bias voltage. Depending on the alloy chemistry and processing, the coating included variable amounts of alpha-, alpha &apos;&apos; and beta-phases of Ti with different morphologies and crystallographic texture. Mechanical properties of every coating is largely determined by the micro-structure present, which is directly related to bias voltage used during sputtering process. Thus, hardness values change as a function of the compressive residual stresses magnitude and Young&apos;s modulus decreased from 63 GPa, at 0 V, to 47 GPa, at -63 V, being this value close to human bone (similar to 30 GPa). After that, Young&apos;s modulus progressively increases to 89 GPa, at -148 V. On the other hand, bioactivity of the coating is practically doubled when compared to Ti6AL4V alloy.

Název v anglickém jazyce

Development of new beta/alpha ''-Ti-Nb-Zr biocompatible coating with low Young's modulus and high toughness for medical applications

Popis výsledku anglicky

Ideal biomaterials to fabricate orthopedic implants, especially for load-bearing joint replacements, should include only non-toxic elements with good biocompatibility, high corrosion resistance and surface bioactivity, together with a good combination of mechanical properties. Based on these criteria, a manufacturing approach based on sputtering techniques can be ideal to develop coatings free of toxic elements tailored for advanced applications on pure titanium or titanium alloys used in biomedical applications. In this work, the ternary Ti-Nb-Zr system was used to develop non-toxic beta-rich Ti coatings with several complex microstructures by careful control of Nb and Zr concentration and deposition parameters, such as bias voltage. Depending on the alloy chemistry and processing, the coating included variable amounts of alpha-, alpha &apos;&apos; and beta-phases of Ti with different morphologies and crystallographic texture. Mechanical properties of every coating is largely determined by the micro-structure present, which is directly related to bias voltage used during sputtering process. Thus, hardness values change as a function of the compressive residual stresses magnitude and Young&apos;s modulus decreased from 63 GPa, at 0 V, to 47 GPa, at -63 V, being this value close to human bone (similar to 30 GPa). After that, Young&apos;s modulus progressively increases to 89 GPa, at -148 V. On the other hand, bioactivity of the coating is practically doubled when compared to Ti6AL4V alloy.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

<a href="/cs/project/GP14-32801P" target="_blank" >GP14-32801P: Nový způsob přípravy metalických vrstev pro aplikace v medicíně</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Materials &amp; Design

ISSN

0264-1275

e-ISSN

—

Svazek periodika

142

Číslo periodika v rámci svazku

MAR 15 2018

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

44-55

Kód UT WoS článku

000425878200005

EID výsledku v databázi Scopus

2-s2.0-85040327861