NiAl INTERMETALLIC PREPARED WITH REACTIVE SINTERING AND SUBSEQUENT POWDER-METALLURGICAL PLASMA-SINTERING COMPACTION

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F16%3A43902467" target="_blank" >RIV/60461373:22310/16:43902467 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389021:_____/16:00463405

Výsledek na webu

<a href="http://dx.doi.org/10.17222/mit.2015.089" target="_blank" >http://dx.doi.org/10.17222/mit.2015.089</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17222/mit.2015.089" target="_blank" >10.17222/mit.2015.089</a>

Jazyk výsledku

angličtina

Název v původním jazyce

NiAl INTERMETALLIC PREPARED WITH REACTIVE SINTERING AND SUBSEQUENT POWDER-METALLURGICAL PLASMA-SINTERING COMPACTION

Popis výsledku v původním jazyce

This paper proposes a novel method for powder-metallurgy preparation of compact NiAl intermetallics. In the first step, the NiAl powder is prepared with the reactive-sintering procedure. The porous NiAl product of the SHS reaction is milled to a fine powder and consequently compacted by SPS processing. The compaction of powder metals and alloys is a very difficult field due to the need of preserving the unique properties of the initial materials. One of the few possible methods of a successful compaction is plasma sintering. To describe detailed structures of powder-metallurgy materials, it is necessary to use advanced microscopy methods such as SEM and TEM. In this study, the structure of a NiAl intermetallic compound is described. The material was first produced, with reactive sintering, from pure elements. Subsequently, the NiAl porous master alloy was milled and compacted with the spark-plasma-sintering (SPS) technique. The particle size of the NiAl powder was comparable to the grain size of the compacted material, which exhibited a low porosity. It was proved that the interconnection of the NiAl particles is made by a thin layer of nanocrystalline oxides.

Název v anglickém jazyce

NiAl INTERMETALLIC PREPARED WITH REACTIVE SINTERING AND SUBSEQUENT POWDER-METALLURGICAL PLASMA-SINTERING COMPACTION

Popis výsledku anglicky

This paper proposes a novel method for powder-metallurgy preparation of compact NiAl intermetallics. In the first step, the NiAl powder is prepared with the reactive-sintering procedure. The porous NiAl product of the SHS reaction is milled to a fine powder and consequently compacted by SPS processing. The compaction of powder metals and alloys is a very difficult field due to the need of preserving the unique properties of the initial materials. One of the few possible methods of a successful compaction is plasma sintering. To describe detailed structures of powder-metallurgy materials, it is necessary to use advanced microscopy methods such as SEM and TEM. In this study, the structure of a NiAl intermetallic compound is described. The material was first produced, with reactive sintering, from pure elements. Subsequently, the NiAl porous master alloy was milled and compacted with the spark-plasma-sintering (SPS) technique. The particle size of the NiAl powder was comparable to the grain size of the compacted material, which exhibited a low porosity. It was proved that the interconnection of the NiAl particles is made by a thin layer of nanocrystalline oxides.

Druh

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

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

—

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

Materiali In Technologie

ISSN

1580-2949

e-ISSN

—

Svazek periodika

50

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

SI - Slovinská republika

Počet stran výsledku

4

Strana od-do

447-450

Kód UT WoS článku

000385008500025

EID výsledku v databázi Scopus

2-s2.0-84975032526