The crystallization kinetics of the CaO-SiO2-P2O5-MgO-Al2O3 base glass system

被引：10
作者：
Ercenk, Ediz [1 ]
机构：
[1] Sakarya Univ, Fac Engn, Dept Met & Mat Engn, TR-54187 Sakarya, Turkey
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2014年 / 387卷
关键词：
Crystallization; Kinetics; Whitlockite; Bio-glass; FORMING ABILITY; CERAMICS; BEHAVIOR; BIOACTIVITY;
D O I：
10.1016/j.jnoncrysol.2014.01.017
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this study, the crystallization kinetics of CaO-SiO2-P2O5-MgO-Al2O3 glass was investigated. DTA analysis was employed to determine the glass transition and crystallization temperatures of the glass system. The crystallization heat treatment was realised at 825 degrees C and 1000 degrees C for 1 h based on DTA results. XRD analysis, by which whitlockite, anorthite, diopside, and wollastonite phases were detected, was performed for crystalline phase determination. The activation energies of crystallization and viscous flow were measured to be 328 kJ . mol(-1) and 377 kJ . mol(-1), indicating that bulk nucleation and two-dimensional crystal growth were the dominating mechanisms. Micro-structural investigations by using SEM analysis showed that the produced CaO-SiO2-P2O5-MgO-Al2O3 glass-ceramics exhibited a porous, fine, and homogenous microstructure. In addition, the glass and glass-ceramic samples were characterized by hardness and fracture toughness tests. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：101 / 106
页数：6
相关论文
共 34 条
[1]   The fluorapatite-anorthite system in biomedicine [J].
Agathopoulos, S ;
Tulyaganov, DU ;
Marques, PAAP ;
Ferro, MC ;
Fernandes, MHV ;
Correia, RN .
BIOMATERIALS, 2003, 24 (07) :1317-1331
[2]   Glass-forming ability versus stability of silicate glasses. II. Theoretical demonstration [J].
Avramov, I ;
Zanotto, ED ;
Prado, MO .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 2003, 320 (1-3) :9-20
[3]  
Boch P, 2007, CERAMIC MATERIALS: PROCESSES, PROPERTIES AND APPLICATIONS, P1, DOI 10.1002/9780470612415
[4]   Characteristics of crystals precipitated in sintered apatite/wollastonite glass ceramics [J].
Chang, CK ;
Mao, DL ;
Wu, JS .
CERAMICS INTERNATIONAL, 2000, 26 (07) :779-785
[5]   Crystallization kinetics and dielectric properties of barium strontium titanate based glass-ceramics [J].
Chen, Jichun ;
Zhang, Yong ;
Deng, Changsheng ;
Dai, Xiaming .
MATERIALS CHEMISTRY AND PHYSICS, 2010, 121 (1-2) :109-113
[6]   Crystallization kinetics of a lithium zinc silicate glass studied by DTA and DSC [J].
Donald, IW .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 2004, 345 :120-126
[7]   Study of the bioactivity of fluorophlogopite-whitlockite ceramics [J].
El-Meliegy, E. M. ;
El-Bassyouni, G. T. .
CERAMICS INTERNATIONAL, 2008, 34 (06) :1527-1532
[8]   CMAS degradation of environmental barrier coatings [J].
Grant, Kendra M. ;
Kramer, Stephan ;
Lofvander, Jan P. A. ;
Levi, Carlos G. .
SURFACE & COATINGS TECHNOLOGY, 2007, 202 (4-7) :653-657
[9]  
Holand W., 2002, Glass-ceramic technology
[10]   Crystallization and properties of a spodumene-willemite glass ceramic [J].
Hu, AM ;
Li, M ;
Dali, DLM ;
Liang, KM .
THERMOCHIMICA ACTA, 2005, 437 (1-2) :110-113
1234