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Iranian Journal of Materials Science and Engineering، جلد ۸، شماره ۱، صفحات ۹-۱۸
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عنوان انگلیسی INVESTIGATION OFELECTRICALAND MECHANICALPROPERTIES OFTETRAGONAL/CUBIC COMPOSITE ELECTROLYTES PREPARED BYIMPREGNATION OFCUBIC ZIRCONIAWITH ZIRCONIASOLUTION
چکیده انگلیسی مقاله Abstract: Zirconia solid electrolytes with nonequilibrium composite structure were prepared by impregnation of a porous 8YSZ matrix with a solution of Zirconia. Microstructures were characterized by XRD and SEM. The electrical properties were studied by impedance spectroscopy as a function of temperature. Biaxial flexural strength and fracture toughness of composite samples were measured by ring on ring and Vickers microhardness indentation methods respectively. The microstructures of the composite electrolytes were composed of cubic grains surrounded by tetragonal second phase grains. It was shown that the electrical and mechanical properties of the prepared electrolyte can be adjusted by controlling the amount of doped zirconia. Increasing the amount of doped zirconia increases the tetragonal phase content which improves fracture toughness and fracture strength. In addition, increasing tetragonal phase content of the composite electrolytes decreases the conductivity at high temperatures while the situation is reversed at low temperatures.
کلیدواژه‌های انگلیسی مقاله Keywords, Zirconia, Fuel Cell, Composite Electrolyte
نویسندگان مقاله m قطعی | m ghatee
1 faculty of mechanical engineering, shahrood university of technology, shahrood, iran.

سازمان اصلی تایید شده: دانشگاه صنعتی شاهرود (Shahrood university of technology)

m h شریعت | m h shariat
2 department of materials science and engineering, shiraz university, shiraz, iran.

سازمان اصلی تایید شده: دانشگاه شیراز (Shiraz university)

نشانی اینترنتی http://ijmse.iust.ac.ir/browse.php?a_code=A-10-3-137&slc_lang=en&sid=en
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Research paper
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