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Mechanosynthesis of metastable cubic delta-Ta1-xN

dc.contributor.authorGarcía Mendoza, Teresa
dc.contributor.authorMartínez García, Alfredo
dc.contributor.authorBecerril Juárez, Ignacio Guadalupe
dc.contributor.authorLópez Vázquez, Erick
dc.contributor.authorÁvalos Borja, Miguel
dc.contributor.authorValeria Zaragoza, Mario
dc.contributor.authorJuárez Arellano, Erick Adrián
dc.identifier.citationT. Garcia-Mendoza, A. Martinez-Garcia, I.G. Becerril-Juarez, E. Lopez-Vazquez, M. Avalos-Borja, M. Valera-Zaragoza, E.A. Juarez-Arellano, Mechanosynthesis of metastable cubic ?-Ta1?xN, Ceramics International, Volume 46, Issue 14, 2020, Pages 23049-23058,
dc.description.abstract"The formation of the cubic ?-Ta1?xN phase by high-energy ball-milling from tantalum and boron nitride (h-BN) is explored. Two different molar ratios Ta:BN, 1:1 and 2:1, were used. X-ray diffraction, scanning electron microscopy, surface area analysis by the Brunauer-Emmett-Teller method, and thermogravimetric analysis were used to characterize the products obtained. In both molar ratios and after a few minutes of milling, the mechanosynthesis of ?-Ta1?xN was observed. Increasing the entropy of the system by introducing vacancies and point defects by the high-energy ball-milling process seems to stabilize the cubic ?-Ta1?xN phase, as previous theoretical studies had reported. The phase obtained depends on the molar ratio used: in the molar ratio 1:1 a non-stoichiometric ?-Ta1?xN phase is obtained, while in the molar ratio 2:1 a stoichiometric ?-TaN phase and secondary phases are obtained. The amorphous boron remains dispersed in the material until the mechanical energy is high enough to trigger the formation of tantalum borides."
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional
dc.subjectCubic ?-ta1?Xn phase
dc.subjectHigh-energy ball-milling
dc.subjectMetastable phase
dc.subjectTantalum nitride
dc.subject.classificationTECNOLOGÍA DE MATERIALES
dc.titleMechanosynthesis of metastable cubic delta-Ta1-xN
dc.rights.accessAcceso Abierto

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