基于有限元法模拟微晶玻璃的微晶化加热过程<sup>*</sup>

doi:10.11896/j.issn.1005-023X.2017.020.033

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Abstract The CaO-Al₂O₃-SiO₂(CAS) glasses that were prepared by natural cooling yellow phosphorus furnace slag were taken as research objects. On the basis of ANSYS finite element analysis, the numerical simulation of the crystallization behavior process of glass-ceramics was carried out to obtain the curve equation of the center point and the end point temperature field of the glass changing with time. The results show that the variation of center temperature and the endpoint temperature value of internal glass with time have a high fitting degree with the exponential equation in the stage of heating from room temperature to nucleation temperature (25—780 ℃) and from the nucleation temperature to crystallization temperature (780—1 080 ℃). In order to prevent the large temperature gradient distribution and thermal stress generation in the heating process of the crystallization behavior process of glass-ceramics, the heating rate should be controlled at 2—4 ℃/min in the stage of 25—780 ℃ and at 0—2 ℃/min in the stage of 780—1 080 ℃ respectively. Through differential thermal analysis and X-ray diffraction, the glass specimen were heated to nucleation temperature (780 ℃) at 3 ℃/min, and then heated to crystallization temperature (1 080 ℃) at 1 ℃/min to obtain the CaO-Al₂O₃-SiO₂ microcrystalline glass, which was then verified by experiment to obtain the glass-ceramics with excellent property whose main crystalline phase were wollastonite (CaSiO₃), containing wollastonite type of solid solution of iron ((Ca,Fe)SiO₃).

Key words： glass-ceramics crystallization behavior process heat transfer finite element simulation

Published: 05 May 2018

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	Articles by authors
	LIU Hongpan
	HUANG Xiaofeng
	MA Liping
	SHANG Zhibiao
	LIU Xiuzhuang
	ZHAO Dan
	JIANG Ming

Cite this article:

LIU Hongpan,HUANG Xiaofeng,MA Liping, et al. Finite Element Simulation on the Heat Transfer in the Crystallization Behavior Process of Glass-ceramics[J]. Materials Reports, 2017, 31(20): 164-169.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.020.033 OR http://www.mater-rep.com/EN/Y2017/V31/I20/164

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