- Tytuł:
- Synthesis, Characterization and Thermal Diffusivity of Holmium and Praseodymium Zirconates
- Autorzy:
-
Stopyra, M.
Niemiec, D.
Moskal, G. - Powiązania:
- https://bibliotekanauki.pl/articles/352244.pdf
- Data publikacji:
- 2016
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
pyrochlores
synthesis
polymerized-complex method
holmium zirconate
praseodymium zirconate
thermal diffusivity - Opis:
- A2B2O7 oxides with pyrochlore or defected fluorite structure are among the most promising candidates for insulation layer material in thermal barrier coatings. The present paper presents the procedure of synthesis of holmium zirconate Ho2Zr2O7 and praseodymium zirconate Pr2Zr2O7 via Polymerized-Complex Method (PCM). Thermal analysis of precursor revealed that after calcination at relatively low temperature (700°C) fine-crystalline, single-phase material is obtained. Thermal diffusivity was measured in temperature range 25-200°C, Ho2Zr2O7 exhibits lower thermal diffusivity than Pr2Zr2O7. Additionally, PrHoZr2O7 was synthesized. The powder in as-calcined condition is single-phase, but during the sintering decomposition of solid solution took place and Ho-rich phase precipitated. This material exhibited the best insulating properties among the tested ones.
- Źródło:
-
Archives of Metallurgy and Materials; 2016, 61, 2B; 1249-1254
1733-3490 - Pojawia się w:
- Archives of Metallurgy and Materials
- Dostawca treści:
- Biblioteka Nauki
Artykuł