Sintering temperature-dependence on radiopacity of Bi(2-x) ZrxO(3+x/2) powders prepared by sol-gel process

May Show Chen, Shih Hsun Chen, Fu Chih Lai, Chin Yi Chen, Ming Yuan Hsieh, Wei Jen Chang, Jen Chang Yang, Chung Kwei Lin

研究成果: 雜誌貢獻文章同行評審

7 引文 斯高帕斯(Scopus)


Bismuth oxide (Bi2O3) is an effective additive used to enhance radiography resolution for dental materials. However, there are potential concerns regarding its biocompatibility and connection to tissue discoloration. In the present study, we modified the radiopacity properties of Bi2O3 with zirconium oxide (ZrO2) using a sol-gel process and investigated the composition, as well as the effects of heat treatment temperature using Thermogravimetry analysis (TGA), differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), and X-ray diffraction (XRD). The harvested Bi2-xZrxO3+x/2 particles showed that the dominant phase transferred from α-Bi2O3 to β-Bi7.38Zr0.62O12.31 after a heat treatment of over 750 °C for 2 h. As the x values of Bi2-xZrxO3+x/2 increased from 0.2 to 1.0, more zirconium oxide precipitated onto the particle surface, thus enhancing the surface roughness of particles. For sol-gel Bi1.8Zr0.2O3.1 powders (x = 0.2), the radiopacity values became 4.90 ± 0.23 and 5.83 ± 0.22 mmAl after a heat treatment of 500 °C and 750 °C, respectively.
出版狀態已發佈 - 九月 11 2018

ASJC Scopus subject areas

  • 材料科學(全部)


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