Open AccessCollective synthesis of the CaB<sub>6</sub>‒TiB<sub>2</sub> heterogeneous powders
Author(s) -
Д. Д. Несмелов,
А. С. Лысенков,
Д. П. Данилович,
T. V. Kotsar,
С. С. Орданьян
Publication year - 2018
Publication title -
novye ogneupory
Language(s) - English
Resource type - Journals
ISSN - 1683-4518
DOI - 10.17073/1683-4518-2018-10-31-36
Subject(s) - boron carbide , materials science , isothermal process , hot pressing , boron , carbide , particle (ecology) , argon , pressing , metallurgy , analytical chemistry (journal) , crystallography , chemistry , composite material , organic chemistry , physics , oceanography , thermodynamics , geology
The heterogeneous CaB 6 ‒TiB 2 powder blends were synthesized by means of the TiO 2 and CaCO 3 mixture boron carbide reduction under vacuum at 1400‒1650 °C, and reactive hot pressing was used according to the condition: 1500 °C (synthesis in vacuum) ‒ 1900 °C (Argon pressing). As a result of the CaB 6 ‒TiB 2 synthesis with the mass ratio 1:1 at 1600 °C and isothermal time 1 hour the heterogeneous mixture was prepared which contained the CaB 6 and TiB 2 crystal phases as well as the residual B 4 C admixture (0,5 mass percent). The powder particles were the grains 1‒3 micrometers in diameter containing two phases CaB 6 and TiB 2 as the micro crystals 0,1‒1,0 micrometers in diameter uniformly spaced over the particle volume.Ill. 6. Ref. 37. Tab. 1.