Sujarinee Sinchai. Synthesis of boron carbide powder from boric acid and sucrose by carbothermic reduction process. (). King Mongkut's University of Technology North Bangkok. Central Library. : , 2019.
Synthesis of boron carbide powder from boric acid and sucrose by carbothermic reduction process
Abstract:
Boron carbide is one of the hardest materials. Combined with its light weight, high melting point, good resistance to chemicals and high neutron absorption cross-section, boron carbide is the promising material for many applications. In this study, synthesis of boron carbide powder was attempted using an economic method carbothermic reduction process. Boric acid and sucrose were used as sources of boron and carbon, respectively. Four compositions of precursors having different boric acid to sucrose mole ratios were heat treated in air at 700 Celsius degrees for 2 h. The pyrolyzed precursors were synthesized in tube furnace at 1350-1450 Celsius degrees under argon flow. Results from X-ray diffraction analysis showed the appearance of boron carbide phase in all compositions at the synthesis temperature of 1350 Celsius degrees whereas carbon and boron oxide were also detected. Phase pure boron carbide could be successfully synthesized at 1450 Celsius degrees. The influences of process parameters, e.g., composition ratio, temperature, holding time on the phase formation of the synthesized powders were investigated.
King Mongkut's University of Technology North Bangkok. Central Library
Address:
BANGKOK
Email:
library@kmutnb.ac.th
Created:
2019
Modified:
2019-10-08
Issued:
2019-10-08
บทความ/Article
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BibliograpyCitation :
In Chemical Society of Thailand under the Patronage of Professor Dr. HRH Princess Chulabhorn. Pure and Applied Chemistry International Conference 2019 (PACCON 2019) (MN36-41). Bangkok : Mahidol University