Kinetics of Explosive Crystallization Phenomena in Amorphous Silicon and Crystal Structure of the Layers Formed

1991 ◽  
Vol 237 ◽  
Author(s):  
E. Glaser ◽  
H. Bartsch ◽  
G. Andrä
Keyword(s):  
Crystal Structure ◽  
Crystallization Process ◽  
Cellular Growth ◽  
Preferential Growth ◽  
Crystalline Layer ◽  
Liquid Zone ◽  
Random Nucleation ◽  
Explosive Crystallization ◽  
Kinetics Of ◽  
Curved Interface

ABSTRACTSystematic relations are shown between the parameters controlling explosive crystallization in silicon (temperature, width of a liquid zone, and gradient of melt undercooling), the kinetics of the crystallization process, the predominance of preferential growth directions, and the crystal structure observed. Three typical regions of crystallization are found: (a) cellular growth of a laminated crystalline layer controlled by the formation of high densities of twins at a nearly plane liquid/solid interface, (b) cellular-dendritic growth of crystal lamellae characterized by branching of a curved interface, and (c) formation of a diffuse “slush zone” due to random nucleation in a-Si and grain growth in the liquid zone.

Initiation of the Explosive Crystallization Process in Amorphous Alloys of the Fe-Zr System by Pulse Laser Treatment

2019 ◽  
Vol 11 (2) ◽  
pp. 02004-1-02004-5
Author(s):  
T. L. Tsaregradskaya ◽  
◽  
Yu. A. Kunitskyi ◽  
О. О. Kаlenyk ◽  
I. V. Plyushchay ◽  
...  
Keyword(s):  
Laser Treatment ◽  
Pulse Laser ◽  
Amorphous Alloys ◽  
Crystallization Process ◽  
Explosive Crystallization

scholarly journals Non-Isothermal Crystallization Kinetics of Poly(Ethylene Glycol)–Poly(l-Lactide) Diblock Copolymer and Poly(Ethylene Glycol) Homopolymer via Fast-Scan Chip-Calorimeter

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1156
Author(s):  
Dejia Chen ◽  
Lisha Lei ◽  
Meishuai Zou ◽  
Xiaodong Li
Keyword(s):  
Ethylene Glycol ◽  
Heterogeneous Nucleation ◽  
Isothermal Crystallization ◽  
Crystallization Process ◽  
Poly Ethylene Glycol ◽  
Ozawa Method ◽  
Isothermal Crystallization Kinetics ◽  
Fast Cooling ◽  
Poly Ethylene ◽  
Kinetics Of

The non-isothermal crystallization kinetics of double-crystallizable poly(ethylene glycol)–poly(l-lactide) diblock copolymer (PEG-PLLA) and poly(ethylene glycol) homopolymer (PEG) were studied using the fast cooling rate provided by a Fast-Scan Chip-Calorimeter (FSC). The experimental data were analyzed by the Ozawa method and the Kissinger equation. Additionally, the total crystallization rate was represented by crystallization half time t1/2. The Ozawa method is a perfect success because secondary crystallization is inhibited by using fast cooling rate. The first crystallized PLLA block provides nucleation sites for the crystallization of PEG block and thus promotes the crystallization of the PEG block, which can be regarded as heterogeneous nucleation to a certain extent, while the method of the PEG block and PLLA block crystallized together corresponds to a one-dimensional growth, which reflects that there is a certain separation between the crystallization regions of the PLLA block and PEG block. Although crystallization of the PLLA block provides heterogeneous nucleation conditions for PEG block to a certain extent, it does not shorten the time of the whole crystallization process because of the complexity of the whole crystallization process including nucleation and growth.

Crystal structure and thermal decomposition kinetics of a 2D coordination polymer of cadmium(II)

2008 ◽  
Vol 61 (20) ◽  
pp. 3237-3244 ◽  
Author(s):  
Ying-Xia Zhou ◽  
Si-Yin Liu ◽  
Xiao-Qing Shen ◽  
Hong-Yun Zhang ◽  
Ya-Hui Yu
Keyword(s):  
Crystal Structure ◽  
Thermal Decomposition ◽  
Coordination Polymer ◽  
Decomposition Kinetics ◽  
Thermal Decomposition Kinetics ◽  
Kinetics Of

Kinetics of Barium Sulfate Deposition and Crystallization Process in the Flowing Tube

2020 ◽  
Vol 59 (16) ◽  
pp. 7299-7309
Author(s):  
Alex Yi-Tsung Lu ◽  
Khadouja Harouaka ◽  
Samridhdi Paudyal ◽  
Saebom Ko ◽  
Chong Dai ◽  
...  
Keyword(s):  
Barium Sulfate ◽  
Crystallization Process ◽  
Sulfate Deposition ◽  
Kinetics Of
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