Porous magnesium alloys prepared by powder metallurgy

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F16%3A43902508" target="_blank" >RIV/60461373:22310/16:43902508 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.17222/mit.2015.226" target="_blank" >http://dx.doi.org/10.17222/mit.2015.226</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17222/mit.2015.226" target="_blank" >10.17222/mit.2015.226</a>

Result language

angličtina

Original language name

Porous magnesium alloys prepared by powder metallurgy

Original language description

This paper deals with the development of porous magnesium alloys that can be used in medicine for bone fixations and implants. The individual components of the alloys were chosen so that the biodegradability of the material is maintained. The advantage of these magnesium materials should be an ability to decompose after some time. This should reduce the number of surgeries and consequently increase the comfort of patients. All the samples were prepared using the method of powder metallurgy. The influence of particular alloying elements - aluminium, zinc, yttrium - on the structure of the alloys was explored, with changes being seen in the area of the fraction of pores, the size and the shapes of the pores, according to the alloying elements and the prolongation of the time of sintering the powders. By altering the chemical composition and the time of sintering the demanded porosity was not achieved, and that is the reason why a pore-forming agent (ammonium carbonate) was added. It was removed by thermal decomposition before the powder's sintering. By adding ammonium carbonate we managed to increase the porosity and at the same time we obtained more pores (in equivalent diameter 200-400 ?m). The mechanical properties of the samples were tested in compression. In the samples without the pore-forming agent the values of the ultimate strength were larger than the values of natural bones. After adding the pore-forming agent the ultimate strength and modulus elasticity were reduced.

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JG - Metallurgy, metal materials

OECD FORD branch

—

Project

<a href="/en/project/GBP108%2F12%2FG043" target="_blank" >GBP108/12/G043: Interface controlled properties of micro/nanocrystalline materials for advanced structural applications, biodegradable implants and hydrogen storage</a><br>

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

Materiali In Technologie

ISSN

1580-2949

e-ISSN

—

Volume of the periodical

50

Issue of the periodical within the volume

6

Country of publishing house

SI - SLOVENIA

Number of pages

6

Pages from-to

917-922

UT code for WoS article

000391224300013

EID of the result in the Scopus database

—