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Mohammad Velashjerdi

Mohammad Velashjerdi

Academic rank: Assistant Professor
ORCID: https://orcid.org/0000-0002-0018-4650
Education: PhD.
ScopusId: 36987723300
Faculty: Engineering
Address: Arak University
Phone:

Research

Title
Synthesis of Ti3SiC2 MAX phase powder through molten salt method
Type
JournalPaper
Keywords
max phase-molten salt-synthesis
Year
2023
Journal International Journal of Applied Ceramic Technology
DOI
Researchers Sorush Etebarian ، Hossien sarpolaky ، Mohammad Velashjerdi

Abstract

Titanium silicon carbide (Ti3SiC2) MAX phase powder was synthesized from elemental reactants using the molten salt synthesis (MSS) method. Optimum experimental parameters were also investigated to determine the purity and synthesis pathway of the Ti3SiC2 MAX phase. The results showed that Ti3SiC2 was not synthesized using carbon black as the carbon source in the starting materials because of the high quantity of TiC formed along with the TiSi2 silicide phase. However, Ti3SiC2 was successfully synthesized in a relatively high purity (93%) at 1200◦C for 2 h using graphite as the source of carbon because of the formation of TiC and Ti5Si3 intermediate phases. The Ti5Si3 silicide phasewas found to play a crucial role in the formation of the Ti3SiC2 MAX phase using the MSSmethod. Moreover, applying a pressure of 150 MPa to the prepared samples and using the eutectic mixture of NaCl–KCl (molar ratio: 1:1) instead of NaCl also resulted in the higher formation of the Ti3SiC2 MAX phase. The formation mechanism of Ti3SiC2 was determined to be the reaction among Ti5Si3, TiC, and residual carbon through the template-growth and dissolution–precipitation mechanisms that occurred at different stages of the synthesis process.