Size-Dependent Anatase to Rutile Phase Transformation and Particle Growth

2012 ◽  
Vol 25 (8) ◽  
pp. 1408-1415 ◽  
Author(s):  
Kairat Sabyrov ◽  
Nathan D. Burrows ◽  
R. Lee Penn
Keyword(s):  
Phase Transformation ◽  
Particle Growth ◽  
Rutile Phase ◽  
Size Dependent

Enhanced anatase-to-rutile phase transformation without exaggerated particle growth in nanostructured titania–tin oxide composites

2007 ◽  
Vol 57 (8) ◽  
pp. 771-774 ◽  
Author(s):  
Krishnankutty-Nair P. Kumar ◽  
Derek J. Fray ◽  
Jalajakumari Nair ◽  
Fujio Mizukami ◽  
Tatsuya Okubo
Keyword(s):  
Phase Transformation ◽  
Tin Oxide ◽  
Particle Growth ◽  
Rutile Phase ◽  
Oxide Composites ◽  
Nanostructured Titania

scholarly journals Size-dependent Phase Transformation and Fracture of ZnO Nanowires

2017 ◽  
Vol 21 ◽  
pp. 86-93
Author(s):  
Jianying He ◽  
Jianyang Wu ◽  
Shijo Nagao ◽  
Lijie Qiao ◽  
Zhiliang Zhang
Keyword(s):  
Phase Transformation ◽  
Zno Nanowires ◽  
Size Dependent

Size-dependent solution-mediated phase transformation of piroxicam monohydrate particles

CrystEngComm ◽  
2021 ◽  
Vol 23 (16) ◽  
pp. 2928-2932
Author(s):  
Changlin Yao ◽  
Lei Wang ◽  
Xinyuan Wang ◽  
Xutang Tao
Keyword(s):  
Particle Size ◽  
Phase Transformation ◽  
Size Dependent

The transformation from the piroxicam monohydrate to form I or form II could be achieved precisely by adjusting the particle size itself in the 99% acetone-1% H2O solvent at 31 °C.

Study on the Anatase to Rutile Phase Transformation and Controlled Synthesis of Rutile Nanocrystals with the Assistance of Ionic Liquid

Langmuir ◽  
2010 ◽  
Vol 26 (12) ◽  
pp. 10294-10302 ◽  
Author(s):  
Kunlun Ding ◽  
Zhenjiang Miao ◽  
Baoji Hu ◽  
Guimin An ◽  
Zhenyu Sun ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Phase Transformation ◽  
Rutile Phase ◽  
Controlled Synthesis

Aluminate Green Phosphor with Small Particle Size Used for PDP via Co-Precipitation Method

2011 ◽  
Vol 295-297 ◽  
pp. 890-895
Author(s):  
Yan Dong ◽  
Yang Zhou ◽  
Xue Lin Han ◽  
Wei Jie Gu
Keyword(s):  
Particle Size ◽  
Phase Transformation ◽  
Small Particle ◽  
High Efficiency ◽  
Particle Growth ◽  
Solid State Reaction Method ◽  
Precipitation Method ◽  
Small Particle Size ◽  
Green Phosphor ◽  
Co Precipitation

Mg doped BaAl12O19:Mn2+ phosphor is one of the most efficient green phosphors for PDP. It is difficult to prepare the phosphor both have small particle size (< 3μm) and high luminescence. In the present work, a BaAl12O19:Mn2+ phosphor with small particle size was synthesized by the chemical co-precipitation method. Phase transformation and particle growth process during calcining process were investigated. The nucleation process was also discussed. The results show that, the phase transformation is complicated, the transition phases include BaCO3, γ-Al2O3, BaF2, BaAl2O4 and two phases contain Mn; The BaAl12O19 phase is formed from the reaction between BaAl2O4 phase and γ-Al2O3 phase, no a-Al2O3 phase appears during the entire process; The formation temperature of pure BaAl12O19 phase is 1200°C, which is lower than that in the high-temperature solid state reaction method. High efficiency BaAl12O19:Mn2+ phosphor with small particle size (< 2μm) and hexagonal flaky shape can be prepared by this method.

scholarly journals Size-Dependent Phase Transformation during Gas Atomization Process of Cu–Sn Alloy Powders

Materials ◽  
2019 ◽  
Vol 12 (2) ◽  
pp. 245 ◽  
Author(s):  
Hao Pan ◽  
Hongjun Ji ◽  
Meng Liang ◽  
Junbo Zhou ◽  
Mingyu Li
Keyword(s):  
Phase Transformation ◽  
Nucleation Theory ◽  
Gas Atomization ◽  
Atomization Process ◽  
Cu6sn5 Phase ◽  
Lotus Leaf ◽  
Threshold Size ◽  
Size Dependent ◽  
Droplet Sizes ◽  
Transient Nucleation

For binary element atomization, it is essential to investigate the phase transformation from liquid to solid as a functions of the droplet sizes, as well as the reaction competitiveness, during gas atomizing solidification of their nuclei. In the present work, a series of phase transformations of undercooled Cu (60.9 wt.%)/Sn droplets were analyzed when atomized by pressure gas. The results indicated that the microstructures of the obtained powders and their morphologies were highly relevant to the droplet size. According to the phase characteristics analyzed by the microstructural observations in combination with the transient nucleation theory, powders with sizes from 10 to 100 μm were divided into three categories, exhibiting lotus-leaf, island, and stripe morphologies. The competitive formation of Cu6Sn5 or Cu3Sn was also controlled by the droplet sizes, and a diameter of approximately 45 μm was identified as the threshold size. After heat treatment at 300 °C for 4 h, the powders consisted of a single η’ Cu6Sn5 phase. The obtained Cu6Sn5 phase powders can be used in the field of high-temperature applications as intermetallic balls for integrated chip interconnects.

Size‐Dependent Phase Transformation of Noble Metal Nanomaterials

Small ◽  
2019 ◽  
Vol 15 (41) ◽  
pp. 1903253 ◽  
Author(s):  
Faisal Saleem ◽  
Xiaoya Cui ◽  
Zhicheng Zhang ◽  
Zhongqiang Liu ◽  
Jichen Dong ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Noble Metal ◽  
Size Dependent ◽  
Metal Nanomaterials
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