Influences of Ultrasonic Wave on Polycrystalline Alumina Fibers Synthesized

Abstract:

In order to improve the stabilities of A95-aluminum-silicon sols, the influences of various ultrasonic field, ultrasonic time and ultrasonic frequency on the property of aluminum-silicon sols were researched. The physical-chemical performances of sols, such as the sol viscosity, rheological properties and microstructure, and so on, were measured. The results show that the influence of sonochemical actions on the stability of the Al₂O₃-SiO₂ sol is remarkable. Standing wave fields accelerate the molecules agglomeration of the sol. In the diffusion wave fields, the stability of the sol increases with ultrasonic frequency enhances, but the stability first increases and then reduces with the extension of ultrasonic time. When ultrasonic frequency and ultrasonic time is 100 Hz and 60 minutes respectively, the stability of the Al₂O₃-SiO₂ sol is the best.

• Periodical: Applied Mechanics and Materials (Volumes 217-219)
• Pages: 362-368
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.217-219.362
• Online since: November 2012
• Authors: Yong Zhi Zhang*, Hong Xia Li, Jin Xiang Wang
• Keywords: Aluminum-Silicon Sols, Rheological Property, Stability, Ultrasonic Wave (UW), Viscosity

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