Reactive Sintering Mechanism and Phase Formation in Ni-Ti-Al Powder Mixture During Heating

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F18%3A43916936" target="_blank" >RIV/60461373:22310/18:43916936 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.3390/ma11050689" target="_blank" >http://dx.doi.org/10.3390/ma11050689</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ma11050689" target="_blank" >10.3390/ma11050689</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Reactive Sintering Mechanism and Phase Formation in Ni-Ti-Al Powder Mixture During Heating

Popis výsledku v původním jazyce

This work aims to describe the formation of intermetallics in the Ni-Ti-Al systemin dependence on the heating rate, which has been determined previously as the crucial factor of thermal explosion self-propagating synthesis (TE-SHS). The tested alloys contained 1-7 wt % aluminum. Thermal analysis has been realized by the optical pyrometer under the conditions of high heating rates up to 110 degrees C.min(-1). TE-SHS process in Ni-Ti-Al system is initiated by exothermic reaction of nickel aluminides Ni2Al3 and NiAl3 at the temperature of 535-610 degrees C. The next reactions occur in dependence on the heating rate. Samples containing 1-3 wt % of aluminum exhibit the similar initiation temperature as Ni-Ti binary mixture. The samples containing 5 wt % and more of aluminum were fully reacted after sintering at 800 degrees C with the heating rate of 300 degrees C.min(-1) and the initiation temperature of the TE-SHS was observed close to Al-Al3Ni eutectic temperature (between 630-640 degrees C).

Název v anglickém jazyce

Reactive Sintering Mechanism and Phase Formation in Ni-Ti-Al Powder Mixture During Heating

Popis výsledku anglicky

This work aims to describe the formation of intermetallics in the Ni-Ti-Al systemin dependence on the heating rate, which has been determined previously as the crucial factor of thermal explosion self-propagating synthesis (TE-SHS). The tested alloys contained 1-7 wt % aluminum. Thermal analysis has been realized by the optical pyrometer under the conditions of high heating rates up to 110 degrees C.min(-1). TE-SHS process in Ni-Ti-Al system is initiated by exothermic reaction of nickel aluminides Ni2Al3 and NiAl3 at the temperature of 535-610 degrees C. The next reactions occur in dependence on the heating rate. Samples containing 1-3 wt % of aluminum exhibit the similar initiation temperature as Ni-Ti binary mixture. The samples containing 5 wt % and more of aluminum were fully reacted after sintering at 800 degrees C with the heating rate of 300 degrees C.min(-1) and the initiation temperature of the TE-SHS was observed close to Al-Al3Ni eutectic temperature (between 630-640 degrees C).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

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

2018

Kód důvěrnosti údajů

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

Název periodika

Materials

ISSN

1996-1944

e-ISSN

—

Svazek periodika

11

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

11

Strana od-do

—

Kód UT WoS článku

000434711700039

EID výsledku v databázi Scopus

2-s2.0-85046295664