| Abstrakt: |
A new compound of aluminium boron carbide, Al8B4C7, has been successfully synthesized. Single-crystal and powder X-ray crystallographic data on Al8B4C7 are given, and the possible space group is identified as P63 cm, P¯6c2, or P63/mcm. Powder X-ray diffraction lines are indexed in the 2?-range from 10° to 110°. The unit cell dimensions obtained from a least-square fit computer program are: a=5.906±0.002 Å, c=15.901±0.001 Å, V=480.43±0.03 Å3. In addition, the possibility of a wide range variance of boron content in this compound is denied. |
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