Phase Formation From Liquid Phase Under Various Post-Annealing Conditions

2005 ◽  
Vol 15 (2) ◽  
pp. 2450-2453
Author(s):  
F. Nakao ◽  
K. Osamura
Keyword(s):  
Liquid Phase ◽  
Phase Formation ◽  
Annealing Conditions ◽  
Post Annealing

scholarly journals Fabrication of multi-layered structures for proton conducting ceramic cells

2021 ◽  
Author(s):  
Wendelin Deibert ◽  
Mariya E. Ivanova ◽  
Yuanye Huang ◽  
Rotraut Merkle ◽  
Joachim Maier ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Proton Conductivity ◽  
Phase Formation ◽  
Tape Casting ◽  
Transient Liquid Phase ◽  
Layered Structures ◽  
Proton Conducting

We show manufacturing of 25 cm2 BZCY half-cells by tape-casting of assemblies with electrolyte thickness 10–20 μm. BaY2NiO5 transient liquid phase formation is analysed and proton conductivity with values of σ = 0.003 S cm−1 at 600 °C is shown.

Effect of WC Addition on Phase Formation and Microstructure of TiC-Ni Composites

2008 ◽  
Vol 55-57 ◽  
pp. 353-356
Author(s):  
Nawarat Wora-uaychai ◽  
Nuchthana Poolthong ◽  
Ruangdaj Tongsri
Keyword(s):  
Liquid Phase ◽  
Tungsten Carbide ◽  
Phase Formation ◽  
Liquid Phase Sintering ◽  
Precipitation Process ◽  
Solid Solution Phase ◽  
Binder Phase ◽  
Sintering Process ◽  
X Ray Diffraction ◽  
X Ray

In this research, titanium carbide-nickel (TiC-Ni) composites, with tungsten carbide addition, were fabricated by using a powder metallurgy technique. The TiC-Ni mixtures containing between 0-15 wt. % tungsten carbide (WC), were compacted and then sintered at 1300°C and 1400°C, respectively. The phase formation and microstructure of the WC-added TiC-Ni composites have been investigated by X-ray diffraction and scanning electron microscopy techniques. Mechanical properties of these composites were assessed by an indentation technique. The X-ray diffraction patterns showed no evidence of tungsten rich phases in the sintered WC-added cermets. This indicates that during the sintering process, tungsten carbide particles were dissolved in metallic binder phase (Ni phase) via dissolution/re-precipitation process during liquid phase sintering. The liquid phase formed during sintering process could improve sinterability of TiC-based cermets i.e., it could lower sintering temperatures. The TiC-Ni composites typically exhibited a core-rim structure. The cores consisted of undissolved TiC particles enveloped by rims of (Ti, W)C solid solution phase. Hardness of TiC-Ni composites increased with WC content. Sintering temperature also had a slight effect on hardness values.

Effects of liquid phase formation on the order-disorder behavior of ba (ni1/3nb2/3)o3

1995 ◽  
Vol 173 (1) ◽  
pp. 125-137 ◽  
Author(s):  
In-Tae Kim ◽  
Su Jin Chung ◽  
Kug Sun Hong
Keyword(s):  
Liquid Phase ◽  
Phase Formation

Effects of evaporation vapor composition and post-annealing conditions on carrier density of undoped BaSi2 evaporated films

2020 ◽  
Vol 59 (SF) ◽  
pp. SFFA05 ◽  
Author(s):  
Yuki Kimura ◽  
Michinobu Fujiwara ◽  
Yoshihiko Nakagawa ◽  
Kazuhiro Gotoh ◽  
Yasuyoshi Kurokawa ◽  
...  
Keyword(s):  
Carrier Density ◽  
Vapor Composition ◽  
Annealing Conditions ◽  
Post Annealing

Processing of Nanodiamond Loaded Poly(Lactic Acid) Co-Continuous Porous Structures

2010 ◽  
Author(s):  
Wei Zhang ◽  
Tom Wyatt ◽  
Donggang Yao ◽  
Qingwei Zhang ◽  
Jack G. Zhou
Keyword(s):  
Lactic Acid ◽  
Porous Matrix ◽  
Poly Lactic Acid ◽  
Ternary Blend ◽  
Porous Structures ◽  
Mixing Conditions ◽  
Mixing Ratios ◽  
Annealing Conditions ◽  
Post Annealing ◽  
Phase Size

Porous poly(lactic acid) PLA materials are highly demanded as scaffolding templates in tissue engineering applications. In this study, a protocol for creating co-continuous porous PLA structures with nanodiamond (ND) as additive was investigated. First, a ternary blend of PLA/PS/ND was prepared with different mixing ratios under different mixing conditions. Next, a post annealing stage was applied to coarsen the phase structure. Finally, the PS phase was sacrificially extracted, leaving a porous matrix. The experimental results showed that ND can be an effective compatiblizer for increasing the miscibility between PS and PLA and reducing the phase size. It was further found that the post annealing conditions significantly affect the distribution of ND particles in the blend and finally in the porous PLA structure.

Sign in / Sign up

Export Citation Format

Share Document