In vacuo production of alpha-AlB12, C4AlB24, AlB12C2 and Al3B48C2 powders

作者：Koroglu Ahmet^*; Thompson Derek P

来源：Journal of the European Ceramic Society, 2012, 32(12): 3501-3507.

DOI：10.1016/j.jeurceramsoc.2012.04.032

• Aluminium boron carbides
• Powder-chemical preparation
• Firing
• X-ray methods
• Borides
• Armour

The production of pure powder samples of boron-rich ternary Al-B-C phases was investigated in vacuum at temperatures between 1400 degrees C and 1600 degrees C, using a range of different starting powders. Compacted powder mixes of B-AlB2-B4C, Al-B-C, Al-B-B4C, B-C-AlB2, B-AlB2 and Al-B were heated for 1-2 h under vacuum in a carbon resistance furnace and the products characterised by X-ray diffraction. It was found impossible to produce significant quantities of C4AlB24 under these conditions, but %26gt;95% pure samples of alpha-AlB12, AlB12C2 and Al3B48C2 were obtained. This study is a precursor to further research aimed at producing dense B4C-type materials which might offer the advantages of easier densification and fabrication as compared with B4C itself.

• 出版日期2012-9