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Preparation and grain-growth of chromia-yttrium aluminum garnet composites fibers by sol–gel method

  • Original Paper: Fundamentals of sol-gel and hybrid materials processing
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Abstract

The chromia-yttrium aluminum garnet long fibers were prepared by the sol–gel method using aluminum chloride, aluminum powder, yttrium oxide, chromium trioxide, and acetic acid as raw materials. The spinnability of precursor sol increased while the addition content of polyvinylpyrrolidone increased. The precursor sol has excellent spinnability at 40–60 °C. The chromium (VI) was completely reduced to chromium (III) in the preparation process of chromia-yttrium aluminum garnet fibers. A 5 wt% chromium trioxide completely dissolved in solid solution (Y3(Al1-xCrx)5O12). The chromium can hinder grain growth in yttrium aluminum garnet fibers. The grain growth exponent of the fibers was about 2.88 at 1600 °C.

Graphical Abstract

The chromia-yttrium aluminum garnet (Cr-YAG) long fibers were prepared by the sol–gel method using aluminum chloride, aluminum powder, yttrium oxide, chromium trioxide (CrO3), and acetic acid as raw material. A 5 wt% CrO3 completely dissolved in solid solution (Y3(Al1-xCrx)5O12). The Cr6+ can change to Cr3+ in the preparation process of Cr-YAG fibers.

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Acknowledgements

This work was supported by the Research Fund of the National Science Foundation of China (51641106) and the Education Department Foundation of Shaanxi in China (Grant No. 16JF008).

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Authors and Affiliations

  1. School of Materials Science and Engineering, Xi’an University of Technology, Xi’an, 710048, Shaanxi, People’s Republic of China

    Xiaoling Ma, Zhenlin Lv, Caixia Wang & Xinsheng Wang

  2. School of Materials Science and Engineering, Shaanxi University of Technology, Hanzhong, 723001, Shaanxi, People’s Republic of China

    Xiaoling Ma, Hongbin Tan & Jiao Nan

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  1. Xiaoling Ma
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  2. Zhenlin Lv
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  3. Hongbin Tan
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  4. Jiao Nan
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  5. Caixia Wang
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  6. Xinsheng Wang
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Correspondence to Xiaoling Ma or Zhenlin Lv.

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Dr. Zhenlin Lv is the first corresponding author in the article

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Ma, X., Lv, Z., Tan, H. et al. Preparation and grain-growth of chromia-yttrium aluminum garnet composites fibers by sol–gel method. J Sol-Gel Sci Technol 83, 275–280 (2017). https://doi.org/10.1007/s10971-017-4410-3

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  • DOI: https://doi.org/10.1007/s10971-017-4410-3

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