Sol-Gel Synthesis and Characterization of Ultrafine ZrSiO4 Powder

Zhen Quan Li; Qiang Zhen; Ya Li Wang

doi:10.4028/www.scientific.net/AMR.906.66

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 906Sol-Gel Synthesis and Characterization of...

Sol-Gel Synthesis and Characterization of Ultrafine ZrSiO₄ Powder

Abstract:

High purity ZrSiO₄ powder were synthesized using Si (C₂H₅O)₄ and ZrOCl₂·8H₂O as raw materials by the sol-gel method, LiCl was added as mineralizer to promote crystallization of zircon. The influences of molar ratio of Zr:Si, calcined time and calcined temperature on the synthesis of ZrSiO₄ powder were investigated. XRD, SEM and TEM were used to characterize the powders. It was found that when the molar ratio of Zr:Si was 1:1.2, the calcined temperature was 1600°C and the calcined time was 4h, the high purity ZrSiO₄ ultrafine powder was obtained. The ZrSiO₄ formation began at 1300°C and when the gel was calcined at 1600°Cfor 4 h, the formation rate of ZrSiO₄ was up to 95%. SEM and TEM studies reveal a homogeneous product with particle sizes on the order of 0.1-1μm. The IR emissivity of ultrafine ZrSiO₄ is 0.892 at the whole wavelength range, and that is up to 0.951 at the wavelength range of 8-14 μm.

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Periodical:

Advanced Materials Research (Volume 906)

Pages:

66-71

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.906.66

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Online since:

April 2014

Authors:

Zhen Quan Li, Qiang Zhen*, Ya Li Wang

Keywords:

IR Emissivity, Sol-Gel, Ultrafine Powder, ZrSiO₄

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