Microstructure, mechanical and corrosion properties of biodegradable powder metallurgical Fe-2 wt% X (X = Pd, Ag and C) alloys

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F16%3A43902387" target="_blank" >RIV/60461373:22310/16:43902387 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.matchemphys.2016.06.087" target="_blank" >http://dx.doi.org/10.1016/j.matchemphys.2016.06.087</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.matchemphys.2016.06.087" target="_blank" >10.1016/j.matchemphys.2016.06.087</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Microstructure, mechanical and corrosion properties of biodegradable powder metallurgical Fe-2 wt% X (X = Pd, Ag and C) alloys

Popis výsledku v původním jazyce

Research on biodegradable iron-based materials has been increasing because they appear suitable for fabrication of temporary orthopedic and cardiovascular implants. Preliminary in vitro and in vivo studies have found that iron and some of its alloys exhibit good cyto- and biocompatibility. The main disadvantage of pure iron is its insufficient corrosion rate in physiological environments; therefore, it is necessary to modify it by suitable alloying. In this study, iron alloys containing 2 wt % of palladium, silver or carbon were prepared using powder metallurgy. The microstructure, mechanical and corrosion properties in a simulated body fluid were characterized. Compared to pure iron, alloying slightly increased porosity (from 15% to similar to 18%) and decreased the compressive modulus of elasticity (from 5.6 to 1.1-1.8 GPa), compressive proof strength (from 145 to 113-127 MPa) and the Vickers hardness (from 63 to 23-37). Alloying with palladium and carbon enhanced (whereas silver lowered) the corrosion rate of iron in a simulated body fluid. Based on the obtained results, carbon and especially palladium appear to be suitable alloying elements for iron-based biodegradable materials.

Název v anglickém jazyce

Microstructure, mechanical and corrosion properties of biodegradable powder metallurgical Fe-2 wt% X (X = Pd, Ag and C) alloys

Popis výsledku anglicky

Research on biodegradable iron-based materials has been increasing because they appear suitable for fabrication of temporary orthopedic and cardiovascular implants. Preliminary in vitro and in vivo studies have found that iron and some of its alloys exhibit good cyto- and biocompatibility. The main disadvantage of pure iron is its insufficient corrosion rate in physiological environments; therefore, it is necessary to modify it by suitable alloying. In this study, iron alloys containing 2 wt % of palladium, silver or carbon were prepared using powder metallurgy. The microstructure, mechanical and corrosion properties in a simulated body fluid were characterized. Compared to pure iron, alloying slightly increased porosity (from 15% to similar to 18%) and decreased the compressive modulus of elasticity (from 5.6 to 1.1-1.8 GPa), compressive proof strength (from 145 to 113-127 MPa) and the Vickers hardness (from 63 to 23-37). Alloying with palladium and carbon enhanced (whereas silver lowered) the corrosion rate of iron in a simulated body fluid. Based on the obtained results, carbon and especially palladium appear to be suitable alloying elements for iron-based biodegradable materials.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

<a href="/cs/project/GBP108%2F12%2FG043" target="_blank" >GBP108/12/G043: Mikro- a nanokrystalické materiály s vysokým podílem rozhraní pro moderní strukturní aplikace, biodegradabilní implantáty a uchovávání vodíku</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Materials Chemistry and Physics

ISSN

0254-0584

e-ISSN

—

Svazek periodika

181

Číslo periodika v rámci svazku

September

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

501-511

Kód UT WoS článku

000381530100060

EID výsledku v databázi Scopus

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