PSI - Issue 40

ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000 Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com Available online at www.sciencedirect.com Sci nceDire t Available online at www.sciencedirect.com ScienceDirect

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

Procedia Structural Integrity 40 (2022) 145–152

© 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the15th International Conference on Mechanics, Resources and Diagnostics of Materials and Structures. Abstract In this study, ultradispersed spinel powder (UDP) under conditions close to traditional solid-phase sintering at 1450 ○ C is investigated to determine its phase transitions. Quantitative composition of the UDP spinel was performed using X-ray microanalysis. The UDP spinel's phase and thermal analysis were conducted using X-ray diffraction and thermogravimetric thermal analysis (TGA)/differential thermal analysis (DTA). The UDP spinel was heated from room temperature to 600 ○ C, to 1000 ○ C, to 1450 ○ C to detect phase transitions. It was found that the spinel UDP consists of spinel, periclase, and layered double hydroxides phases. When the UDP spinel is heated from room temperature to 1450 ○ C, layered double hydroxides decompose to Mg-O phase and stoichiometric spinel. © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures. Keywords: Ultradispersed powder; X-ray diffraction; thermal analysis; phase transformation; endothermic process; periclase; layered double hydroxides; stoichiometric spinel. 15th International Conference on Mechanics, Resource and Diagnostics of Materials and Stru tures Study of phase transitions of ultradispersed spinel powder during solid-phase sintering at 1450 ℃ Fedorov M.V. a *, Vasilieva M.I. b a Federal Research Centre “The Yakut Scientific Centre of the Siberian Branch of the Russian Academy of Sciences”, 2, Petrovskogo str.,Yakutsk 677000, Russia b Larionov Institute of Physical-Techincal roblems of the North SB RAS, 1 Oktyabrskaya Street, Yakutsk, 677980, Russia Abstract In this study, ultradispersed spinel powder (UDP) under conditions close to traditional solid-phase sintering at 1450 ○ C is i vestiga e to determine its hase transitions. Qua titative composition f the UDP pinel was performed using X-ray microan lysis. Th UDP spinel's phase and thermal analysis were conducted using X-ray diffraction and th rmogravimetric therm l nalysis (TGA)/differ ntial thermal analysis (DTA). The UDP spinel wa heated from room temperature t 600 ○ C, to 1000 ○ C, to 1450 ○ C to detect phase ransitions. It was found that the spinel UDP consis s o spinel, periclas , nd layered double hydroxides phases. When the UDP spi el s heated from room temperature to 1450 ○ C, layered double hydroxides decomp se to Mg-O pha e and toic iometric spinel. © 2022 Th Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review u der re ponsibility of scientific committe of the15th Int rnational Co ference on Mechanics, Resource and Diagnostics of Materials and S ructur s. Keywords: Ultradispersed pow er; X-ray diffraction; thermal analysis; phase transformation; endothermic process; periclase; layered double hydroxi es; stoichiometric spinel. 15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures Study of phase transitions of ultradispersed spinel powder during solid-phase sintering at 1450 ℃ Fedorov M.V. a *, Vasilieva M.I. b a Federal Research Centre “The Yakut Scientific Centre of the Siberian Branch of the Russian Academy of Sciences”, 2, Petrovskogo str.,Yakutsk 677000, Russia b Larionov Institute of Physical-Techincal Problems of the North SB RAS, 1 Oktyabrskaya Street, Yakutsk, 677980, Russia

* Corresponding author. Tel.: +7-924-175-8136. E-mail address: fedorov.83@mail.ru * Corresponding author. Tel.: +7-924-175-8136. E-mail address: fed rov.83@mail.ru

2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures. 2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review u der responsibility of t scientific committe of the15th Int rnational C ference o Mechanics, Resource and Diagnostics of Materials and Structures.

2452-3216 © 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the15th International Conference on Mechanics, Resources and Diagnostics

of Materials and Structures. 10.1016/j.prostr.2022.04.019