Formation of Phases in Reactively Sintered TiAl3 Alloy
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F20%3AN0000012" target="_blank" >RIV/26316919:_____/20:N0000012 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/20:00533533 RIV/60461373:22310/20:43921114
Result on the web
<a href="https://www.mdpi.com/1420-3049/25/8/1912/htm" target="_blank" >https://www.mdpi.com/1420-3049/25/8/1912/htm</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/molecules25081912" target="_blank" >10.3390/molecules25081912</a>
Alternative languages
Result language
angličtina
Original language name
Formation of Phases in Reactively Sintered TiAl3 Alloy
Original language description
This work highlights new results on the synthesis of the TiAl3 intermetallic phase using self-propagating high-temperature synthesis. This method is considered a promising sintering route for intermetallic compounds. It was found that the reactions proceed in two stages. Below the melting point of aluminum, the Ti2Al5 phase forms at 450 degrees C after long annealing times by a direct solid-state reaction between the aluminum and titanium, and is converted consequently to TiAl3. This is a completely new finding; until now, many authors have believed in the preferential formation of the TiAl3 phase. The second stage, the self-propagating strongly exothermic reaction, proceeds above the melting point of aluminum. It leads to the formation of the TiAl3 phase accompanied by Ti2Al5 and Ti3Al phases. The reaction mechanism was shown in the form of chemical equations, which were supported by calculating Gibbs energy. Reaction temperatures (T-onset, T-maximum, and T-offset) were determined after induction heating thanks to recording by an optical pyrometer. This finding provides completely new opportunities for the determination of activation energy at heating rates, in which common calorimeters are not able to detect a response or even measure. Now, the whole procedure will become accessible.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
MOLECULES
ISSN
1420-3049
e-ISSN
1420-3049
Volume of the periodical
25
Issue of the periodical within the volume
8
Country of publishing house
CH - SWITZERLAND
Number of pages
13
Pages from-to
nestránkováno
UT code for WoS article
000534617500070
EID of the result in the Scopus database
2-s2.0-85083798339