Abstract
Crystallization and sintering behaviour of three cordierite (2MgO-2Al2O3-5SiO2) glasses containing different amount of additives were investigated and compared by using differential thermal analysis (DTA), X-ray diffraction (XRD), scanning electron microscopy (SEM), and the Archimedes method. The stoichiometric 2MgO-2Al2O3-5SiO2 (MAS) glass and the 2MgO-2Al2O3-5SiO2 glass containing 3 wt% of B2O3 and 3 wt% of P2O5 (MASBP) showed two exotherms (one for μ-cordierite formation from a glass and the other for α-cordierite formation from the μ-cordierite phase), whereas the 2MgO-2Al2O3-5SiO2 glass containing 2 wt % of B2O3, 2 wt% of P2O5, and 2 wt % of TiO2 (MASBPT) showed only a single exotherm representing α-cordierite formation. By using Kissinger, Augis-Bennett, Ozawa, and modified Kissinger methods, the activation energy values for α-cordierite formation in the MASBP and MASBPT glasses were determined as 310 ± 6 and 326 ± 13 kJ mol-1, respectively, whereas that in the MAS glass was determined as 868 ± 5 kJ mol-1. The MASBPT glass showed the lowest peak temperature value for α-cordierite formation (980°C) amongst the three glasses. Both the MASBP and MASBPT glasses showed excellent sintering behaviour (> 99.7% of theoretical density).
| Original language | English |
|---|---|
| Pages (from-to) | 5421-5427 |
| Number of pages | 7 |
| Journal | Journal of Materials Science |
| Volume | 31 |
| Issue number | 20 |
| Publication status | Published - 1996 Dec 1 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Materials Science(all)
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The effect of additives on the crystallization and sintering of 2MgO-2Al2O3-5SiO2 glass-ceramics. / Sung, Yun Mo.
In: Journal of Materials Science, Vol. 31, No. 20, 01.12.1996, p. 5421-5427.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The effect of additives on the crystallization and sintering of 2MgO-2Al2O3-5SiO2 glass-ceramics
AU - Sung, Yun Mo
PY - 1996/12/1
Y1 - 1996/12/1
N2 - Crystallization and sintering behaviour of three cordierite (2MgO-2Al2O3-5SiO2) glasses containing different amount of additives were investigated and compared by using differential thermal analysis (DTA), X-ray diffraction (XRD), scanning electron microscopy (SEM), and the Archimedes method. The stoichiometric 2MgO-2Al2O3-5SiO2 (MAS) glass and the 2MgO-2Al2O3-5SiO2 glass containing 3 wt% of B2O3 and 3 wt% of P2O5 (MASBP) showed two exotherms (one for μ-cordierite formation from a glass and the other for α-cordierite formation from the μ-cordierite phase), whereas the 2MgO-2Al2O3-5SiO2 glass containing 2 wt % of B2O3, 2 wt% of P2O5, and 2 wt % of TiO2 (MASBPT) showed only a single exotherm representing α-cordierite formation. By using Kissinger, Augis-Bennett, Ozawa, and modified Kissinger methods, the activation energy values for α-cordierite formation in the MASBP and MASBPT glasses were determined as 310 ± 6 and 326 ± 13 kJ mol-1, respectively, whereas that in the MAS glass was determined as 868 ± 5 kJ mol-1. The MASBPT glass showed the lowest peak temperature value for α-cordierite formation (980°C) amongst the three glasses. Both the MASBP and MASBPT glasses showed excellent sintering behaviour (> 99.7% of theoretical density).
AB - Crystallization and sintering behaviour of three cordierite (2MgO-2Al2O3-5SiO2) glasses containing different amount of additives were investigated and compared by using differential thermal analysis (DTA), X-ray diffraction (XRD), scanning electron microscopy (SEM), and the Archimedes method. The stoichiometric 2MgO-2Al2O3-5SiO2 (MAS) glass and the 2MgO-2Al2O3-5SiO2 glass containing 3 wt% of B2O3 and 3 wt% of P2O5 (MASBP) showed two exotherms (one for μ-cordierite formation from a glass and the other for α-cordierite formation from the μ-cordierite phase), whereas the 2MgO-2Al2O3-5SiO2 glass containing 2 wt % of B2O3, 2 wt% of P2O5, and 2 wt % of TiO2 (MASBPT) showed only a single exotherm representing α-cordierite formation. By using Kissinger, Augis-Bennett, Ozawa, and modified Kissinger methods, the activation energy values for α-cordierite formation in the MASBP and MASBPT glasses were determined as 310 ± 6 and 326 ± 13 kJ mol-1, respectively, whereas that in the MAS glass was determined as 868 ± 5 kJ mol-1. The MASBPT glass showed the lowest peak temperature value for α-cordierite formation (980°C) amongst the three glasses. Both the MASBP and MASBPT glasses showed excellent sintering behaviour (> 99.7% of theoretical density).
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UR - http://www.scopus.com/inward/citedby.url?scp=0030262901&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0030262901
VL - 31
SP - 5421
EP - 5427
JO - Journal of Materials Science
JF - Journal of Materials Science
SN - 0022-2461
IS - 20
ER -