Open AccessПолучение керамики на основе карбида кремния из золошлаковых отходов
Author(s) -
А. Я. Пак,
В. Е. Губин,
Г.Я. Мамонтов
Publication year - 2020
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2020.14.49661.18302
Subject(s) - spark plasma sintering , silicon carbide , materials science , ceramic , carbon fibers , metallurgy , sintering , electric arc , carbide , silicon , fly ash , plasma , composite material , composite number , electrode , chemistry , physics , quantum mechanics
The paper shows the possibility of obtaining bulk samples of solid ceramics based on silicon carbide obtained from ash waste. The process is implemented in three stages: the initial ash waste was treated with a carbon plasma of a direct current arc discharge under ambient air conditions using a vacuumless method, then the obtained powder material was purified from unbounded carbon in an atmospheric furnace, and at the final stage the powder product was sintered by the plasma spark sintering method. According to analytical methods, the result is a ceramic based on silicon carbide with a density of 3.05 g/cm3 and a hardness of up to 19.9 GPa.