B4C (Boron carbide) powder
Sources:nanopure | Release date:
2018-08-02
| Browsing volume:
Key words:B4C (Boron carbide) powder
Carbothermic reduction process is an economic method to produce boron
carbide powder. In the present article this method was utilized to
produce a boron carbide powder using commercial purity raw materials.
Boric acid as a source of boron, and carbon active and petroleum coke as
reducing agents were used. Mixtures of boric acid and carbon bearing
material with a particle size of less than 44 μm were placed in a
graphite crucible and heated under a flow of argon atmosphere in a tube
furnace to 1400–1550 °C for 1–5 h. This resulted in the formation of
boron carbide powder with or without un-reacted starting raw materials.
It was found that the optimum weight ratio of boric acid to carbon
bearing material was 3.5 and 3.3 for petroleum coke and carbon active,
respectively. Heat treatment of these blends at 1470 °C for 5 h resulted
in the synthesis of boron carbide powders, which contained 0.82 and
0.59 weight percent free carbon, respectively.
B4C (Boron carbide) powder
1) 98% min & 99% min.
2) size: 0.2um
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