On the Structural and Chemical Homogeneity of Spark Plasma Sintered Tungsten

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F19%3A00509560" target="_blank" >RIV/61389021:_____/19:00509560 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21340/19:00338764 RIV/00216208:11320/19:10407260 RIV/60461373:22310/19:43919102

Výsledek na webu

<a href="https://www.mdpi.com/2075-4701/9/8/879" target="_blank" >https://www.mdpi.com/2075-4701/9/8/879</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/met9080879" target="_blank" >10.3390/met9080879</a>

Jazyk výsledku

angličtina

Název v původním jazyce

On the Structural and Chemical Homogeneity of Spark Plasma Sintered Tungsten

Popis výsledku v původním jazyce

Tungsten-based materials are the prime candidate plasma-facing materials for future fusion reactors, such as DEMO. Spark plasma sintering is a prospective fabrication technology with several advantageous features. The concurrent application of electric current, temperature and pressure enhances the sintering process, allowing for lower temperatures and shorter sintering times than traditional powder metallurgy processes. This in turn helps to avoid excessive grain growth and phase segregation in W-alloys. This study is focused on several factors that may influence the homogeneity of the sintered compacts-namely the diffusion of carbon from the graphite die, purity of the powder and sintering conditions. The following characteristics of spark plasma-sintered tungsten compacts were studied: composition (especially carbon and oxygen content), porosity, mechanical properties (hardness and fracture strength), and thermal diffusivity. The effects of the abovementioned processing factors were quantified, and local variations of selected properties were assessed.

Název v anglickém jazyce

On the Structural and Chemical Homogeneity of Spark Plasma Sintered Tungsten

Popis výsledku anglicky

Tungsten-based materials are the prime candidate plasma-facing materials for future fusion reactors, such as DEMO. Spark plasma sintering is a prospective fabrication technology with several advantageous features. The concurrent application of electric current, temperature and pressure enhances the sintering process, allowing for lower temperatures and shorter sintering times than traditional powder metallurgy processes. This in turn helps to avoid excessive grain growth and phase segregation in W-alloys. This study is focused on several factors that may influence the homogeneity of the sintered compacts-namely the diffusion of carbon from the graphite die, purity of the powder and sintering conditions. The following characteristics of spark plasma-sintered tungsten compacts were studied: composition (especially carbon and oxygen content), porosity, mechanical properties (hardness and fracture strength), and thermal diffusivity. The effects of the abovementioned processing factors were quantified, and local variations of selected properties were assessed.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Metals

ISSN

2075-4701

e-ISSN

—

Svazek periodika

9

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

18

Strana od-do

879

Kód UT WoS článku

000484510000069

EID výsledku v databázi Scopus

2-s2.0-85073271264