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Home  >  Journal list  >  MATERIALS TRANSACTIONS  >  Vol.58  No.3 (2017)  >  pp.420-422

MATERIALS TRANSACTIONS
<<Previous article Vol.58  No.3 (2017)   pp.420 - 422 Next article>>

Effect of Cooling Rate on the Microstructure of Colloidal Glass

Yongzhe Wang1), Lidan Qu2), Hongge Li1), Hao Zhang1), Yilin Wang1), Yunzhuo Lu1)
1) School of Materials Science and Engineering, Dalian Jiaotong University 2) Handling Machinery Manufacturing Deparment, Dalian Huarui Heavy Industry Group Co., Ltd.

The cooling rate with which the liquid is cooled has tremendous impact on the macroscopic properties of amorphous solids, but little information on the underlying mechanism for this dependence is available, mainly due to the lack of clear characterization on the microstructural variation induced by cooling rate. We built a colloidal glass to obtain its direct three-dimensional configuration by using laser scanning confocal microscopy and investigate the effect of cooling rate on microstructure. By quantifying coordination numbers and bond-angle distribution, we give evidence that the icosahedral-like structure is the most frequent local structure and more favored by the lower cooling rate.




Keyword:
amorphous materials, colloidal glass, cooling rate, microstructure

Received: November 14, 2016
Accepted: December 14, 2016 , Published online: February 25, 2017

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