scholarly journals Nucleation-Mediated Lateral Growth on Foreign Substrate

2006 ◽  
Vol 111 (3) ◽  
pp. 1071-1075 ◽  
Author(s):  
Da-Jun Shu ◽  
Mu Wang ◽  
Feng Liu ◽  
Zhenyu Zhang ◽  
Ru-Wen Peng ◽  
...  
Author(s):  
F. Khoury ◽  
L. H. Bolz

The lateral growth habits and non-planar conformations of polyethylene crystals grown from dilute solutions (<0.1% wt./vol.) are known to vary depending on the crystallization temperature.1-3 With the notable exception of a study by Keith2, most previous studies have been limited to crystals grown at <95°C. The trend in the change of the lateral growth habit of the crystals with increasing crystallization temperature (other factors remaining equal, i.e. polymer mol. wt. and concentration, solvent) is illustrated in Fig.l. The lateral growth faces in the lozenge shaped type of crystal (Fig.la) which is formed at lower temperatures are {110}. Crystals formed at higher temperatures exhibit 'truncated' profiles (Figs. lb,c) and are bound laterally by (110) and (200} growth faces. In addition, the shape of the latter crystals is all the more truncated (Fig.lc), and hence all the more elongated parallel to the b-axis, the higher the crystallization temperature.


2021 ◽  
Vol 546 ◽  
pp. 149166
Author(s):  
Haibo Gan ◽  
Jidong Liu ◽  
Qiaoyan Hao ◽  
Di Wu ◽  
Peng Li ◽  
...  

2021 ◽  
pp. 2100419
Author(s):  
Nema M. Abdelazim ◽  
Yasir J. Noori ◽  
Shibin Thomas ◽  
Victoria K. Greenacre ◽  
Yisong Han ◽  
...  
Keyword(s):  

2021 ◽  
Vol 556 ◽  
pp. 125986
Author(s):  
Tomasz Sochacki ◽  
Slawomir Sakowski ◽  
Pawel Kempisty ◽  
Mikolaj Amilusik ◽  
Piotr Jaroszynski ◽  
...  
Keyword(s):  

2021 ◽  
Vol 501 ◽  
pp. 229969
Author(s):  
Chao Shen ◽  
Jinlei Gu ◽  
Nan Li ◽  
Zuling Peng ◽  
Keyu Xie

Materials ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 80
Author(s):  
Robert Paszkowski ◽  
Jacek Krawczyk ◽  
Włodzimierz Bogdanowicz ◽  
Dariusz Szeliga ◽  
Jan Sieniawski

The roots of cored single-crystalline turbine blades made of a nickel-based CMSX-4 superalloy were studied. The casts were solidified by the vertical Bridgman method in an industrial ALD furnace using the spiral selector and selector continuer situated asymmetrically in the blade root transverse section. Scanning electron microscopy, the Laue diffraction and X-ray diffraction topography were used to visualize the dendrite array and the local crystal misorientation of the roots. It has been stated that heterogeneity of the dendrite array and creation of low-angle boundaries (LABs) are mostly related to the lateral dendrite branching and rapid growth of the secondary and tertiary dendrites near the surface of the continuer–root connection. These processes have an unsteady character. Additionally, the influence of the mould walls on the dendrite array heterogeneity was studied. The processes of the lateral growth of the secondary dendrites and competitive longitudinal growth of the tertiary dendrites are discussed and a method of reducing the heterogeneity of the root dendrite array is proposed.


2018 ◽  
Vol 3 (7) ◽  
Author(s):  
Yaomin Zhao ◽  
Shiying Xiong ◽  
Yue Yang ◽  
Shiyi Chen

2021 ◽  
Vol 1 (1) ◽  
pp. 143-149
Author(s):  
Wei Cao ◽  
Deng Gao ◽  
Hongyang Zhao ◽  
Zhibin Ma

2019 ◽  
Vol 58 (SB) ◽  
pp. SBBJ06 ◽  
Author(s):  
Wenchang Yeh ◽  
Toshiki Shirakawa ◽  
Anh Hoang Pham ◽  
Shigekazu Morito
Keyword(s):  

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