The Investigation of the Effect of the Oven-Chemical and the Mechanical-Activated Techniques on Insitu Synthesis of the MoSi2-SiC Nanocomposite by Self-Propagating High-Temperature Synthesis

Tayebifard, Seyed Ali; Yazdani-Rad, Rahim

doi:10.30501/acp.2026.579809.1195

The Investigation of the Effect of the Oven-Chemical and the Mechanical-Activated Techniques on Insitu Synthesis of the MoSi2-SiC Nanocomposite by Self-Propagating High-Temperature Synthesis

Document Type : Original Research Article

Authors

seyed ali Tayebifard ¹

Rahim Yazdani-Rad ²

¹ Semiconductors Department, Materials and Energy Research Center, Meshkin Dasht, Alborz, Iran

² Semiconductors Department, MERC

10.30501/acp.2026.579809.1195

Abstract

The purpose of this study was to investigate suitable methods for the synthesis of MoSi2-SiC nanocomposite by self-propagating high-temperature synthesis in one step. Therefore, the oven-chemical and mechanically activated techniques were selected from the available options. First, the elemental raw materials molybdenum (Mo), silicon (Si) and graphite (C) were mixed in powder form and milled in stoichiometric ratios in a planetary mill with 0, 1, 3 and 6 hour times, 10/1 ratio BPR and 250 RPM. This powder product was compacted in a uniaxial press with 300MPa. In parallel, the combustion aid samples were prepared using Mo-Si-Al raw materials. In the next step, the main samples (Mo-Si-C) and the combustion aid samples (Mo-Si-Al) were assembled ether and sent to the combustion reactor in 850oC temperature in Ar environment. After the samples were synthesized in the reactor, they were investigated by TEM, SEM and XRD. Finally, a MoSi2-SiC nanocomposite with crystallites below 100 nm in size and with the fewest undesirable phases was synthesized in situ from elemental raw materials by optimizing the parameters affecting the self-propagating high-temperature synthesis process.

Keywords

Nanocomposite

MoSi2

SiC

self-propagating high- temperature synthesis

Mechanical Activated

Oven-Chemical

Subjects