排序方式: 共有23条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
Structure and conductivity of yttria and scandia‐doped zirconia crystals grown by skull melting
下载免费PDF全文
![点击此处可从《Journal of the American Ceramic Society》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Mihail A. Borik Sergey I. Bredikhin Vladimir T. Bublik Aleksej V. Kulebyakin Irina E. Kuritsyna Elena E. Lomonova Philipp O. Milovich Valentina A. Myzina Vyacheslav V. Osiko Polina A. Ryabochkina Nataliya Y. Tabachkova 《Journal of the American Ceramic Society》2017,100(12):5536-5547
In this paper a detailed study of the (ZrO2)1‐x(Y2O3)x (x=0.025–0.15), (ZrO2)1‐x(Sc2O3)x (x = 0.06 – 0.11) and (ZrO2)1‐x‐y(Sc2O3)x(Y2O3)y (x=0.07 – 0.11; y=0.01 – 0.04) solid solution crystals grown by skull melting technique is presented. The structure, phase composition, and ion conductivity of the obtained crystals were investigated by X‐ray diffraction, transmission electron microscopy, Raman scattering spectroscopy, and impedance spectroscopy. Maximum conductivity as (ZrO2)1‐x(Y2O3)x and (ZrO2)1‐x(Sc2O3)x solid solution crystals is observed for the compositions containing 10 mol% stabilizing oxide, and the conductivity of 10ScSZ is ~3 times higher than for 10YSZ. Experiments on crystal growth (ZrO2)1‐x‐y(Sc2O3)x(Y2O3)y solid solutions showed that uniform, transparent crystals 7Sc3YSZ, 7Sc4YSZ, 8Sc2YSZ, 8Sc3YSZ, 9Sc2YSZ, 9Sc3YSZ, 10Sc1YSZ, and 10Sc2YSZ are single phase crystal containing t″ phase. It is established that a necessary condition of melt growth of (ZrO2)1‐x‐y(Sc2O3)x(Y2O3)y single‐phase crystals is the total concentration of the stabilizing oxides from 10 to 12 mol%. The addition of Y2O3 affects the (ZrO2)1‐x‐y(Sc2O3)x(Y2O3)y solid solution conductivity different ways and depends on the Sc2O3 content in the starting composition. The effects of structure, phase composition, concentration, and type of stabilizing oxides on the electrical characteristics of obtained crystals are discussed. 相似文献
5.
M. A. Borik S. I. Bredikhin V. T. Bublik A. V. Kulebyakin I. E. Kuritsyna E. E. Lomonova F. O. Milovich V. A. Myzina V. V. Osiko S. V. Seryakov N. Yu. Tabachkova 《Technical Physics Letters》2017,43(3):289-292
The interrelationship between the structure, phase composition, and transport characteristics of solid electrolytes based on ZrO2 has been studied as dependent on the content of stabilizing Y2O3 additive. It is established that twin boundaries do not lead to the appearance of additional mechanism of ionic conductivity acceleration in ZrO2–Y2O3 crystals. The maximum conductivity has been observed in ZrO2–(8–10) mol % Y2O3 crystals containing a t” phase, in which oxygen atoms are displaced from high-symmetry positions characteristic of the cubic phase. 相似文献
6.
G. D. Kapova A. A. Dubynin G. N. Antipina I. N. Bykova N. I. Chudakova O. B. Kirienko T. N. Got'e A. G. Borik 《Fibre Chemistry》1971,1(5):575-577
Conclusions It is shown that the introduction of up to 2% TiO2 into a fibre increases the whiteness and decreases the transparency of a textile. The increased TiO2 content in the fibre reduces its light stability. A light stabiliser for the highly opacified fibre has been selected.All-Union Scientific Research Institute of Glass Fibres; Klinsk Combine. Translated from Khimicheskie Volokna, No. 5, pp. 67–68, September–October, 1969. 相似文献
7.
M. A. Borik V. T. Bublik M. A. Vishnyakova A. V. Kulebyakin E. E. Lomonova V. A. Myzina F. O. Milovich V. V. Osiko N. Yu. Tabachkova 《Inorganic Materials》2012,48(2):156-160
The structure of partially stabilized zirconia crystals has been studied by transmission electron microscopy before and after
annealing. Structural characterization of Y2O3-doped (2.8 to 4 mol %) zirconia before annealing showed that all of the samples consisted of twin domains whose size was
dependent on the stabilizer content. Annealing at 2100°C increased the domain size in the composition range 2.8–3.7 mol %
Y2O3 and reduced it at 4 mol % Y2O3. These structural changes allowed us to determine the position of the representative point relative to the phase boundary
in the equilibrium phase diagram of the system. 相似文献
8.
9.
10.