Combustion Synthesis of Magnesium-Aluminum Oxynitride MgAlON with Tunable Composition

Abstract

Magnesium-aluminum oxynitride MgAlON has garnered significant attention in recent years due to its unique properties and potential applications. Herein, we report a systematic study on the synthesis of MgAlON with tunable composition by employing the combustion method. The Al/Al2O3/MgO mixture was combusted in nitrogen gas, and the effects of Al nitriding and oxidation by Mg(ClO4)2 on the exothermicity of the mixture, combustion kinetics, and phase composition of combustion products were investigated. Our results demonstrate that the MgAlON lattice parameter can be controlled by varying the AlON/MgAl2O4 ratio in the mixture, which corresponds to the MgO content in the combustion products. This work provides a new pathway for tailoring the properties of MgAlON, which may have significant implications in various technological applications. In particular, we reveal the dependence of the MgAlON lattice parameter on the AlON/MgAl2O4 ratio. The limitation of the combustion temperature by 1650 °C resulted in obtaining submicron powders with a specific surface area of about 3.8 m/g2.

Effects of TiC, Si, and Al on Combustion Synthesis of Ti3SiC2/TiC/Ti5Si3 Composites

“…As a first attempt, this study aimed to investigate the effects TiC, Si, and Al on the formation of Ti 3 SiC 2 by solid-phase combustion synthesis in the SHS mode. When compared with other processing methods, the SHS technique takes advantage of highly exothermic reactions to produce MAX phases and has benefits of energy effectiveness, time-saving, simplicity, low cost, scalability, and high-purity products [ 37 , 38 , 39 ]. In this study, starting mixtures comprising different amounts of TiC were prepared with an exact Ti:Si:C = 3:1:2 stoichiometry and Si-rich and Al-added compositions.…”

Powder Metallurgy: Materials and Processing

“…The SI consists of 16 papers (published between 2022 and 2023): a review article [ 1 ], a viewpoint paper [ 2 ], a communication [ 3 ], and thirteen research articles [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 ]. The papers reflect the current trends in the field: the search for new compositions (not investigated previously) of materials and the development of new processing approaches enabling better control and flexibility of the materials’ microstructures, shapes, and architectures.…”

“…The research papers report recent findings in metallic [ 4 , 5 , 6 , 7 , 8 , 9 ], ceramic [ 10 , 11 , 12 ], polymer [ 3 ], and composite materials [ 3 , 13 , 14 , 15 , 16 ].…”

“…Interesting ceramic systems in terms of composition have been investigated in [ 10 , 11 , 12 ]. Bannykh et al [ 10 ] conducted a systematic study of the products of interaction between the W 2 B and iridium powders.…”

“…Chorney et al [ 11 ] reported the sintering behavior of Nb 2 O 5 and Ta 2 O 5 mixtures and the formation of a ternary oxide. Akopdzhanyan et al [ 12 ] elaborated the synthesis of MgAlON powders via combustion reactions.…”