The size effect on the phase stability of nanograined Fe 12Ni powders and the magnetic separation of face-centred-cubic body-centred-cubic phases

2003 ◽  
Vol 14 (7) ◽  
pp. 696-700 ◽  
Author(s):  
Hongbin Wang ◽  
Qizheng Liu ◽  
Jihua Zhang ◽  
T Y Hsu (Xu Zuyao)
2017 ◽  
Vol 121 (45) ◽  
pp. 25617-25621 ◽  
Author(s):  
Victoria Shalabaeva ◽  
Mirko Mikolasek ◽  
Maria D. Manrique-Juarez ◽  
Alin-Ciprian Bas ◽  
Sylvain Rat ◽  
...  

2010 ◽  
Vol 8 (3) ◽  
pp. 476-481 ◽  
Author(s):  
Raúl Terrazas Reza ◽  
Carlos A. Martínez Pérez ◽  
A. Martínez Martínez ◽  
Dario Bueno Baques ◽  
Perla E. García-Casillas

2008 ◽  
Vol 4 (2) ◽  
pp. 179-200 ◽  
Author(s):  
Q. Jiang ◽  
C. Yang
Keyword(s):  

2017 ◽  
Vol 888 ◽  
pp. 86-90
Author(s):  
Johar Banjuraizah ◽  
S.Y. Cheong

Niobium doped 8YSZ ceramics were prepared by sol-gel synthesis. The mixtures were calcined, compacted into cylindrical pellets, sintered and evaluated for phase stability, microstructure and electrical conductivity. Tetragonal, monoclinic and cubic phases were present, however the trend for phase seems to be erratic for the studied samples. The increasing Nb content appears to improve the morphology by increasing densification. It is noted that increasing Nb content also increases oxide conductivity. The best conductivity belongs to 1.0% mol Nb, with a value of 8.013 x 10-6 (Ωcm)-1. Increasing Nb content beyond 1.0% mol has detrimental effect on morphology and ionic conductivity.


2006 ◽  
Vol 54 (4) ◽  
pp. 479-484 ◽  
Author(s):  
S. Xiao ◽  
W. Hu ◽  
W. Luo ◽  
Y. Wu ◽  
X. Li ◽  
...  

Author(s):  
S. Baskaran ◽  
R. C. Buchanan

Solid solutions of ZrO2 with small amounts of Y2O3 can stabilize the tetragonal and cubic phases which are formed at high temperature. Fullystabilized cubic ZrO2, owing to its high oxygen-ion mobility, is commonly used as solid-state electrolytes in oxygen monitors. Partially-stabilized ZrO2, containing metastable tetragonal particles in a cubic matrix, has good mechanical and thermomechanical properties. Tetragonal-Yttria-Stabilized Zirconia containing 2-3 mol% Y2O3 with sub-micron grain structures exhibits even higher strengths of the order of 1 GPa and good ionic conductivity. The tetragonal phase stability at low to moderate temperatures (<400°C) as well as mechanical and electrical properties are closely related to the microstructure, particularly grain size and distribution and the nature of the intergranular phase. In this study, heat-treatment effects on microstructure and phase stability in 2 mol% YSZ were investigated.


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