Optimum pyrolysis conditions to prepare the most crystalline boron carbide powder from boric acid–mannitol complex ester
ABDULLAH DEVRİM PEKDEMİR,
MÜŞERREF ÖNAL,
YÜKSEL SARIKAYA
Abstract:A weak acidic complex ester (CE) in solid form was prepared by a condensation reaction between very weak boric acid (BA: H
3
BO
3
) and (D)-mannitol (MA: C
6
H
14
O
6
) by the molar ratio of BA/MA = 2. A boron carbide (B
4
C) precursor was obtained from heating of the CE at 400 °C for 4 h. The precursor was pyrolyzed under argon flow in the interval of 1300–1550 °C for 4 h a… Show more
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