Open AccessПолучение карбида бора в низковольтной электрической дуге постоянного тока, инициированной в открытом воздушном пространстве
Author(s) -
Abbas Pak,
Г.Я. Мамонтов
Publication year - 2018
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2018.14.46341.17056
Subject(s) - boron carbide , inert gas , graphite , boron , boron oxide , materials science , electric arc , inert , carbide , carbon fibers , diffraction , analytical chemistry (journal) , oxide , chemical engineering , metallurgy , chemistry , electrode , composite material , organic chemistry , optics , physics , composite number , engineering
We describe a method of obtaining ultrafine boron carbide (B_13C_2) powder using the effect of a dc electric arc on a mixture of initial reactants containing carbon and boron. A peculiarity of the proposed method is that it can be implemented using arc discharge operating in open air without any vacuum equipment and protective inert gas atmosphere. X-ray diffraction data showed that the synthesized product in the general case contained three crystalline phases: boron carbide (B_13C_2), graphite (C), and boron oxide (B_2O_3). Electron-microscopic examination showed that the average size of boron carbide particles ranged from ~50 nm to ~2 μm.