Fabrication of B4C from Na2B4O7+Mg+C by SHS method

Fabrication of B4C from Na2B4O7+Mg+C by SHS method

This paper deals with the formation of boron carbide (B4C) powders from Na2B4O7 +Mg+C system by self-propagating high-temperature synthesis (SHS) method. B4C without impurities could be obtained after the acid enrichment and distilled water washing. The reaction mechanism of SHS of B4C was proposed:...

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Veröffentlicht in:Ceramics international 2011-07, Vol.37 (5), p.1689-1691
Hauptverfasser: Jiang, Guojian, Xu, Jiayue, Zhuang, Hanrui, Li, Wenlan
Format: Artikel
Sprache:eng
Schlagworte:
Boron carbide
Carbon
Ceramics
Distilled water
Impurities
Reaction mechanisms
Self-propagating synthesis
Synthesis
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Zusammenfassung:This paper deals with the formation of boron carbide (B4C) powders from Na2B4O7 +Mg+C system by self-propagating high-temperature synthesis (SHS) method. B4C without impurities could be obtained after the acid enrichment and distilled water washing. The reaction mechanism of SHS of B4C was proposed: the synthesis of B4C is a process involving the decomposition of Na2B4O7 into the intermediate phase B2O3, which reacts with Mg and carbon to form B4C.
ISSN:0272-8842
DOI:10.1016/j.ceramint.2010.10.007