In situ Synchrotron X-Ray Diffraction Study of Synthesis Reactions in Mechanically Activated Ti + Al Powder Mixture under Linear Heating Conditions
Full article
| Journal |
Solid State Ionics
ISSN: 0167-2738
|
| Output data |
Year: 2024,
Volume: 412,
Article number
: 116599,
Pages count
: 11
DOI:
10.1016/j.ssi.2024.116599
|
| Tags |
Titanium aluminides; Mechanical activation; Linear heating; Phase formation; Time-resolved X-ray diffraction; Solid phase and liquid phase reactions |
| Authors |
Filimonov V.Yu
1,2
,
Loginova M.V.
1
,
Sitnikov A.A.
1
,
Yakovlev V.I.
1
,
Sobachkin A.V.
1
,
Negodyaev A.Z.
1
,
Myasnikov A.Yu
1,3
,
Sharafutdinov M.R.
3,4
|
| Affiliations |
| 1 |
Polzunov Altai State Technical University, Altai region, Lenin avenue, 46, Barnaul 656038, Russian Federation
|
| 2 |
Institute for Water and Environment Problems Siberian Branch of the Russian Academy of Sciences, Molodezhnaya St. 1, Barnaul 656038, Russian Federation
|
| 3 |
Institute of Solid State Chemistry and Mechanochemistry Siberian Branch of the Russian Academy of Sciences, Kutateladze St. 18, Novosibirsk 630128, Russian Federation
|
| 4 |
Synchrotron Radiation Facility, Siberian Circular Photon Source «SKIF» Boreskov Institute of Catalysis of Siberian Branch of the Russian Academy of Sciences, r.p. Koltsovo, pr. Nikolsky 1, Novosibirsk region 630559, Russian Federation
|
|
Funding (2)
|
1
|
Ministry of Science and Higher Education of the Russian Federation
|
FWUR-2024-0040
|
|
2
|
Ministry of Science and Higher Education of the Russian Federation
|
FZMM-2023-0003 (123030200105-5)(075-03-2023-125)
|
In the present work, we studied the features of phase formation in mechanically activated Ti + Al powder mixture at various heating rates for the first time. The study was carried out using high-resolution diffractometry method which made it possible to study the processes of phase formation in situ at any stage of heating. It was established that ignition of the activated mixture can be initiated in the solid phase with an extremely low content of reaction products formed at the preheating stage. An increase in the heating rate leads to a decrease in the average burning rate and an increase in the ignition temperature. At high heating rates, the ignition is initiated in the presence of a liquid phase when the ignition temperatures are close to the melting temperature of aluminum. In this case, the content of reaction products formed during preheating stage is relatively high. It was found that the all main compounds presented in the equilibrium diagram of Ti-Al system are synthesized in parallel. The content of phases in the reaction products depends on the heating rate.