New phase formation of Gd[sub 2]O[sub 3] films on GaAs(100)

2001 ◽  
Vol 19 (4) ◽  
pp. 1434 ◽  
Author(s):  
A. R. Kortan ◽  
M. Hong ◽  
J. Kwo ◽  
J. P. Mannaerts ◽  
J. J. Krajewski ◽  
...  
Keyword(s):  
Phase Formation ◽  
New Phase

Phase Segregation, Transition, or New Phase Formation of Plutonium Dioxide: The Roles of Transition Metals

2019 ◽  
Vol 58 (7) ◽  
pp. 4350-4364 ◽  
Author(s):  
Bingyun Ao ◽  
Jun Tang ◽  
Xiaoqiu Ye ◽  
Ran Tao ◽  
Ruizhi Qiu
Keyword(s):  
Transition Metals ◽  
Phase Formation ◽  
Phase Segregation ◽  
Plutonium Dioxide ◽  
New Phase

scholarly journals Stabilization/Solidification of Strontium Using Magnesium Silicate Hydrate Cement

Processes ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 163
Author(s):  
Tingting Zhang ◽  
Jing Zou ◽  
Yimiao Li ◽  
Yuan Jia ◽  
Christopher R. Cheeseman
Keyword(s):  
Magnesium Oxide ◽  
Silica Fume ◽  
Phase Formation ◽  
Magnesium Silicate ◽  
National Standard ◽  
Leaching Rate ◽  
Hydration Products ◽  
Hydrate Cement ◽  
Leaching Fraction ◽  
New Phase

Magnesium silicate hydrate (M–S–H) cement, formed by reacting MgO, SiO2, and H2O, was used to encapsulate strontium (Sr) radionuclide. Samples were prepared using light-burned magnesium oxide and silica fume, with sodium hexametaphosphate added to the mix water as a dispersant. The performance of the materials formed was evaluated by leach testing and the microstructure of the samples was also characterized. The stabilizing/solidifying effect on Sr radionuclide in the MgO–SiO2–H2O system with low alkalinity is demonstrated in the study. The leaching rate in a standard 42-day test was 2.53 × 10−4 cm/d, and the cumulative 42-day leaching fraction was 0.06 cm. This meets the relevant national standard performance for leaching requirements. Sr2+ was effectively incorporated into the M–S–H hydration products and new phase formation resulted in low Sr leaching being observed.

Evidence of a new phase formation (BaTi4O9) by barium implantation into TiO2

1994 ◽  
Vol 143 (3-4) ◽  
pp. 227-231 ◽  
Author(s):  
S.M.M. Ramos ◽  
N. Bonardi ◽  
R. Brenier ◽  
B. Canut ◽  
P. Thévénard ◽  
...  
Keyword(s):  
Phase Formation ◽  
New Phase

scholarly journals An infrared imaging method for high-throughput combinatorial investigation of hydrogenation-dehydrogenation and new phase formation of thin films

2009 ◽  
Vol 80 (7) ◽  
pp. 073707 ◽  
Author(s):  
H. Oguchi ◽  
J. Hattrick-Simpers ◽  
I. Takeuchi ◽  
E. J. Heilweil ◽  
L. A. Bendersky
Keyword(s):  
Thin Films ◽  
Phase Formation ◽  
High Throughput ◽  
Infrared Imaging ◽  
Imaging Method ◽  
New Phase

Pressureless spark plasma–sintered Bioglass ® 45S5 with enhanced mechanical properties and stress–induced new phase formation

2017 ◽  
Vol 37 (7) ◽  
pp. 2727-2736 ◽  
Author(s):  
Luca Bertolla ◽  
Ivo Dlouhý ◽  
Peter Tatarko ◽  
Alberto Viani ◽  
Amit Mahajan ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Phase Formation ◽  
Spark Plasma ◽  
New Phase

An Investigation on Anti-reducing Effect of CaO in Barium Titanate Based Ceramic

2011 ◽  
Vol 239-242 ◽  
pp. 2457-2460
Author(s):  
Sen Wang ◽  
Zhi Hui Li ◽  
Xin Liu ◽  
Huan Zhang
Keyword(s):  
Liquid Phase ◽  
Barium Titanate ◽  
Phase Formation ◽  
Film Formation ◽  
Ceramic Materials ◽  
Structure Development ◽  
Sintering Aid ◽  
Reducing Atmosphere ◽  
High Level ◽  
New Phase

Anti–reducing effect of CaO in barium titanate based ceramic materials sintered at reducing atmosphere and the structure development of the materials has been studied in this paper.The results show: Addition of CaO in barium titanate based ceramic will keep resistivity of the sample sintered at reducing atmosphere at a high level. The resistivity of the materials increase with the increasing of CaO, and the resistivity keep in constant after the amount of CaOexcess 3mol%. In the sample with sintering aid of SiO2and BaO-excess, introducing of CaO may improve the resistivity of the materials obviously. A slight new phase formation was found in the BaO-excess sample, but no new phase formation was found in the non BaO-excess sample. If there is sintering aid of SiO2in the sample, CaO may accelerate liquid phase film formation at the surface of grains, which will suppress the diffusion of oxygen in the grains to the environment.

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