SYNTHESIS OF ALUMINIUM BORATE WHISKERS THROUGH WET MOLTEN SALT METHOD

Abstract

Aluminium borate (Al₄B₂O₉) whiskers were successfully synthesized by the wet molten salt method at 800 oC through control the aluminum/boron atomic ratio and synthesis temperature. The as-received Al₄B₂O₉ whiskers were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and thermal analysis. A solution-liquid-solid (SLS) mechanism was proposed for the growth mechanism of the whiskers on the basis of the experimental phenomena and the TG-DSC data of the mixed raw materials.

Keywords

• High temperature molten salt
• Aluminum borate
• Whisker material