Phases and phase transformations in nanocrystalline ZrO2
Phases and phase transformations in nanocrystalline ZrO2
复制标题
纳米晶 ZrO2 的相和相变
DOI:
10.1007/s11051-006-9116-3
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发表时间:
2006
影响因子:
2.5
通讯作者:
D. V. Szabó
中科院分区:
文献类型:
--
作者:
D. Vollath;F. D. Fischer;M. Hagelstein;D. V. Szabó
Starting from results from He-pycnometry, electron diffraction, Extended X-ray Absorption Fine Structure Spectroscopy and Perturbed Angular Correlation Spectroscopy the phase transformations and structures of zirconia are described. From a comparison of these results with those obtained on other oxide nanoparticles it is concluded that the phases and structure of nanoparticles are different compared to those of coarse-grained material. The difference of the transformation temperature of bare and coated nanoparticles was used to estimate enthalpy and entropy of the tetragonal → monoclinic transformation for nanoparticulate zirconia. By comparison with results obtained from other nanocrystalline oxides, the following rules were derived: Provided the particles are sufficiently small, particles made of materials showing phase transitions crystallize in the high temperature structure. However, compared to coarse-grained materials of the same structure, the density of nanoparticles is reduced. A first estimation limits this phenomenon to particle sizes well below 10 nm. Those nanoparticles follow the generalized phase diagram postulated by Tammann.
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DOI:
10.1111/j.1151-2916.1956.tb15606.x
发表时间:
1956-01-01
影响因子:
3.9
作者:
LIVEY, DT;MURRAY, P
通讯作者:
MURRAY, P
影响因子:
3.2
作者:
A. S. Kao;G. Gorman
通讯作者:
G. Gorman
DOI:
10.1557/proc-634-b7.7.1
发表时间:
2000
期刊:
MRS Proceedings
影响因子:
--
作者:
D. Vollath;M. Forker;M. Hagelstein;D. Szabó
通讯作者:
D. Szabó
影响因子:
3.2
作者:
S. Schlabach;D. Szabó;D. Vollath;P. Presa;M. Forker
通讯作者:
M. Forker
影响因子:
5.7
作者:
Yang Zhang;X. Jin;T. Hsu
通讯作者:
T. Hsu