کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1332283 | 1500114 | 2013 | 5 صفحه PDF | دانلود رایگان |

• Multi-hierarchical structured YSZ powders were successfully prepared.
• The prepared YSZ powders had a low thermal conductivity (0.63–1.27 W m−1 K−1).
• Improved high-temperature stability had been achieved for the prepared YSZ powders.
• The influence of the morphology on their thermophysical properties was explored.
Multi-hierarchical structured yttria-stabilized zirconia (YSZ) powders were successfully synthesized by a hydrothermal-calcination process. The morphology, crystallinity, and microstructure of the products were characterized by SEM, XRD, TEM, and BET. A possible formation mechanism of the unique structure formed during hydrothermal processing was also investigated. The measured thermophysical results indicated that the prepared YSZ powders had a low thermal conductivity (0.63–1.27 W m−1 K−1), good short-term high-temperature stability up to 1300 °C. The influence of the morphology and microstructure on their thermophysical properties was briefly discussed. The unique multi-hierarchical structure makes the prepared YSZ powders candidates for use in enhanced applications involving thermal barrier coatings.
There are many tiny pores and grain boundaries in the multi-hierarchical structured yttria-stabilized zirconia (YSZ) powders,which greatly decrease the thermal conductivities of the YSZ powders.Figure optionsDownload as PowerPoint slide
Journal: Journal of Solid State Chemistry - Volume 202, June 2013, Pages 168–172