Journal
MATERIALS LETTERS
Volume 62, Issue 12-13, Pages 1909-1912Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2007.10.039
Keywords
nanomaterials; x-ray techniques; yttria stabilized ZrO(2); reverse microemulsion; LiNO(3) molten salt
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Spherical nano-sized YSZ (yttria stabilized ZrO(2)) powders were successfully synthesized via a reverse microermalsion system. The water droplets in the microemulsion system of yelohexane/water/span85/Triton X-100/hexyl alcohol can act as the nano-reactors which solubilize zirconium oxychloride and ammonia water separately. The minute original reactors are favor to the formation of nano-sized spherical YSZ powders and the dispersibility of the powders can be controlled effectually by adjusting the weight ratio of the LiNO(3) molten salt to the precursor. The phase transformation from cubic to monoclinic starts at and 500 degrees C and finally monoclinic and cubic phase with increased crytallinity coexist at 800 degrees C. The effect of LiNO(3) molten salt in the formation of YSZ powders was also discussed. degrees 2007 Elsevier B.V. All rights reserved.
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