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International Journal of Engineering، جلد ۲۵، شماره ۲، صفحات ۱۵۹-۱۶۴
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
PHASE STABILITY AND CONDUCTIVITY OF δ-Bi2O3 WITH MIXTURE OF YTTRIUM AND YTTERBIUM OXIDES |
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| چکیده انگلیسی مقاله |
In this research Bi2O3 was doped with mixtures of 8, 10, 12 and 18 mol % of Y2O3 and Yb2O3 to stabilizing the δ-Bi2O3 phase using solid state reaction technique. Experimental samples were fabricated by isostatic pressing and sintering at 850 °C for 24 h. X-ray diffraction analysis detected cubic phase (δ-Bi2O3) as the sole stable crystalline phase in samples including 12 and 18 mol % of Y2O3 and Yb2O3. The tetragonal phase was also observed in samples with 8 and 10% mol additives. X-ray diffraction analyses on aged samples at 600 oC with 12 mol % additives revealed that the δ-Bi2O3 phase was transformed to the tetragonal polymorph form. Results of ionic conductivity measurements showed that samples with 12 mol % additives (88 mol % Bi2O3, 8 mol % Y2O3 and 4 mol % Yb2O3) had a higher ionic conductivity than the other samples. |
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| کلیدواژه‌های انگلیسی مقاله |
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| نویسندگان مقاله |
Kamran Ahmadi |
Amir Maghsoudipour |
Masoud Alizadeh |
Ceramic, Material and Energy Research Center(MERC)
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| نشانی اینترنتی |
http://www.ije.ir/article_71995_65a08178fafde2f165c3b2c0aa5c5773.pdf |
| فایل مقاله |
اشکال در دسترسی به فایل - ./files/site1/rds_journals/409/article-409-2063045.pdf |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
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