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- W2347396485 abstract "A resin–Zr(OH)4 mixture was prepared by zirconium hydroxide and liquid phenolic resin in ethanol solvent. Then, the mixture was carburized in a coke bed at 500–1 000 ℃ and ground into carbon–ZrO2 composite powder. The samples were characterized by thermogravimetric analysis–differential scanning calorimetry, X-ray diffraction, field-emission scanning electron microscopy and high resolution transmission electron microscopy. The results show that the tetragonal phase of zirconia in the carbon–ZrO2 composite powder can be stabilized to room temperature owing to the fact that carbon enters easily into the crystal lattice. In contrast, only monoclinic phase exists at room temperature after the decomposition of Zr(OH)4. Carbon surrounding the zirconia particles prevents effectively the agglomeration and growth of zirconia particles. The particle sizes of zirconia are only 20–50 nm in the carbon–ZrO2 composite powder oxidized in air at 700 ℃. However, the particles of zirconia are easily agglomerated and their sizes reach 50–100 nm in the case of the decomposition of zirconium hydroxide." @default.
- W2347396485 created "2016-06-24" @default.
- W2347396485 creator A5073758616 @default.
- W2347396485 date "2009-01-01" @default.
- W2347396485 modified "2023-09-24" @default.
- W2347396485 title "PREPARATION AND PHASE TRANSFORMATION OF NANO-SIZED ZIRCONIA POWDER SURROUNDED BY CARBON" @default.
- W2347396485 hasPublicationYear "2009" @default.
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