Cast MoSiBTiC Composites by Metallothermic SHS:
Influence of Ti and C Dopants
V. I. Yukhvida, *, Yu. S. Vdovina, **, and D. E. Andreeva, ***
a Merzhanov Institute of Structural Macrokinetics and Materials Science (ISMAN),
Russian Academy of Sciences, Chernogolovka, Moscow, 142432 Russia
Correspondence to: *e-mail: yukh@ism.ac.ru
Correspondence to: **e-mail: vdovin-us@ism.ac.ru
Correspondence to: ***e-mail: ade@ism.ac.ru
Received 23 December, 2020
Abstract—Influence of added Ti + C mixtures on the metallothermic SHS of cast MoSiBTiC composites in the Mo–Si–B system in conditions of artificial gravity (a = 100 g) was explored by SEM/EDS and XRD. With increasing amount of added Ti + C powder blend (up to 5 wt %), the Mo content of resultant MoSiBTiC composite was found to decrease, that of Ti and C to gradually grow, while that of Si and B to change only slightly. Synthesized composites were found to contain four structural constituents: Mo-based solid solution Mo(ss), [Mo]5SiB2, [Mo,Ti]2C, and [Mo,Ti,]C.
Keywords: metallothermic SHS in artificial gravity, cast MoSiBTiC composites, gravity-assisted segregation, product patterning
DOI: 10.3103/S1061386221030109