Radiopacity performances of precipitated ZrO2-doped Bi2O3 powders and the influences of dopant concentrations and sintering temperatures

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

研究成果: 雜誌貢獻文章

2 引文 斯高帕斯(Scopus)

摘要

In this study, Bi2O3 powders were modified into ZrO2-doped Bi2O3 powders by adding zirconium oxide through precipitation processes. The radiopacity and physical properties of as-synthesized and heat-treated products were investigated. The products were primarily composed of a mixture of β-Bi7.38Zr0.62O12.31 and α-Bi2O3 obtained below 700°C, then transferred to β-Bi7.38Zr0.62O12.31 phase above 750°C. With regard to zirconia dopant concentration effects, more zirconium oxide precipitated onto the Bi2O3 surface as the x values of Bi2-xZrxO3+x/2 increased from 0.2 to 1.0. As the x value of Bi2-xZrxO3+x/2 powder increased, so too did the surface roughness as a result of zirconia precipitation. In terms of temperature effect, increasing heating temperatures resulted in a smoother powder surface due to liquid phase sintering effect. As for radiopacity analysis, the performances were significantly improved by heat treatments and the effects generally enhanced with increasing temperatures. The overall maximum radiopacity value measured after an 800°C heat treatment was 5.57±0.28mm Al for precipitated ZrO2-doped Bi2O3 powders at x=0.2.
原文英語
頁(從 - 到)14008-14014
期刊Ceramics International
43
發行號16
DOIs
出版狀態已發佈 - 十一月 2017

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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