Self-propagating high temperature synthesis (SHS) of ZrC-TiC nanocomposites: Comparison of Mg and Al reductant usage and process optimization
    
Yazarlar (4)
Doç. Dr. Mehmet BUĞDAYCI Yalova Üniversitesi, Türkiye
Serkan Başlayıcı İstanbul Medipol Üniversitesi, Türkiye
Ozan Çoban İstanbul Gedik Üniversitesi, Türkiye
Faruk Kaya İstanbul Teknik Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Journal of the Australian Ceramic Society (Q2)
Dergi ISSN 2510-1560 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili Türkçe Basım Tarihi 07-2024
Cilt / Sayı / Sayfa 60 / 5 / 1541–1555 DOI 10.1007/s41779-024-01062-2
Makale Linki http://dx.doi.org/10.1007/s41779-024-01062-2
Özet
This study investigated the production of ZrC-TiC composite nanopowders by SHS process in TiO2-ZrO2-C-Mg/Al systems. Mg and Al charge stoichiometries and composite charge stoichiometries were optimized for SHS processes. The most precise procedural stages were identified for refining the SHS product; acid concentrations were optimized for Mg usage and an innovative chemical method was developed to eliminate and/or decrease the amount of Al2O3 by-product, enabling the utilization of Al. Thermochemical simulations were conducted for thermodynamic evaluations (adiabatic temperature and specific heat) and characterizations were performed by XRD and SEM-EDS analysis. The findings indicated that utilizing both reductants allowed for the synthesis of ZrC-TiC-(Al2O3) particles that have considerable surface area and commercial purity. The outcomes demonstrated that Magnesium is a more effective reductant, yet Aluminium, also serves as a viable reductant, even though leading to an increase in process steps, but enabling in-situ formation of sinterability and toughness enhancing Al2O3. A novel chemical route including pre-acid leaching, NaOH fusion, water leaching, HCl leaching was identified for the synthesis of ZrC-TiC-Al2O3 composite powder where the amount of Al2O3 could be organized (according to the desired mechanical properties) by optimization.
Anahtar Kelimeler
Aluminium oxide | Combustion synthesis | Nano composite | Titanium carbide | Zirconium carbide