Effects of cerium addition on the microstructure, mechanical properties and thermal conductivity of YSZ fibers
| Autor: | Xinzhu Gan, Chonghe Xu, Xinqiang Wang, Dong Xu, Luyi Zhu, Guanghui Zhang, Zhichao Yu, Kangkang Yuan |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science business.industry Process Chemistry and Technology Doping Modulus chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Microstructure 01 natural sciences Indentation hardness Surfaces Coatings and Films Electronic Optical and Magnetic Materials Cerium Thermal conductivity chemistry Thermal insulation 0103 physical sciences Materials Chemistry Ceramics and Composites Composite material 0210 nano-technology business Yttria-stabilized zirconia |
| Zdroj: | Ceramics International. 44:7077-7083 |
| ISSN: | 0272-8842 |
| Popis: | Ce-doped yttria-stabilized ZrO 2 (YSZ) fibers were prepared with different Ce concentrations (0, 5, 10, 20 mol%) by the sol-gel method. The effects of Ce addition on the microstructure and mechanical properties of the YSZ fibers have been investigated. Compared with the pure YSZ fibers, the Ce addition could cause grain refinement whose mechanism was discussed. Moreover, mechanical measurements showed that the Ce addition could increase the Young's modulus and microhardness of the YSZ fibers. When the doping content was 10%, the values of Young's modulus and microhardness were improved by almost 3 times and 2 times compared with those of the pure YSZ fibers, respectively. Results show that the Ce addition could improve the thermal insulation, thermal conductivity at 800 °C being reduced by over one third (33.52%) when the amount of Ce increased to 20%. |
| Databáze: | OpenAIRE |
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