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Paper Information

Journal:   NANOMATERIALS (JOURNAL OF NANOCOMPOSITE MATERIALS RESEARCH)   FALL 2009 , Volume 1 , Number 3; Page(s) 173 To 184.
 
Paper: 

PREPARATION OF YAG – AL2O3 COMPOSITE FIBER NANOSTRUCTURE BY SOL-GEL METHOD

 
 
Author(s):  SHOJAIE M.*, TAHERI NASSAJ E.
 
* TEHRAN, TARBIAT MODARES, ENGINEERING DEPARTMENT, MATERIALS GROUP
 
Abstract: 

Composite fibers (YAG/Al2O3 ) were prepared by sol-gel method using water as the solvent. They were synthesized from aluminium salt, aluminium metal and yttrium oxide. Transparent fibrous gels were obtained by immersing a thin wire into the viscous solution, then pulling it up by hand. Effect of yttria on crystallization and microstructure of fibers were also investigated. When yttria content was increased, the crystallization of YAG shifted to a lower temperature, whereas the transformation temperature to a-Al2 O3 shifted to a higher temperature. However, the same temperature (1400 oC) was required to obtain the fibers containing a-Al2 O3 and YAG. The composite fibers were denser than alumina fibers. As the yttria content increased, the fiber diameter increased but grain size and densification of fibers decreased.

 
Keyword(s): SOL-GEL, YAG/AL2 O3 FIBER, RHEOLOGY, MICROSTRUCTURE, CRYSTALLIZATION
 
References: 
  • ندارد
 
  Persian Abstract Yearly Visit 73
 
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