Part II: Phase transformation-induced bloating behavior in diopside glass-ceramics for microwave dielectrics

Chen Chia Chou; Kuei Chih Feng; Igor P. Raevski; Li Wen Chu; Haydn Chen; Pin Yi Chen; Cheng Sao Chen; Hao Wei Lee; Chi Shun Tu

doi:10.1016/j.materresbull.2017.01.041

Part II: Phase transformation-induced bloating behavior in diopside glass-ceramics for microwave dielectrics

Chen Chia Chou, Kuei Chih Feng^*, Igor P. Raevski, Li Wen Chu, Haydn Chen, Pin Yi Chen, Cheng Sao Chen, Hao Wei Lee, Chi Shun Tu

^*Corresponding author for this work

International College of Semiconductor Technology

Research output: Contribution to journal › Article

3 Scopus citations

Abstract

Phase transformation and bloating behavior of CaMgSi₂O₆ glass-ceramics with ZrO₂ nucleating agent using two-stage heat treatments were investigated as functions of annealing temperature. The specimens annealed below critical nucleation temperature (T_cn) and sintered at 950 °C exhibit significant bloating phenomena. Kinetic study of CaO-MgO-SiO₂-ZrO₂ (CMSZ) glasses annealed below T_cn reveals high activation energy of crystallization for the ZrO₂ nucleation, and XRD refinement results show the least ZrO₂ contents. The formations of fleeing oxygen and bloating are likely associated with high energy barrier of ZrO₂ phase and zirconia dissolution in the CMSZ glass. Specimens annealed above the T_cn and sintered at 950 °C show significant reduction of activation energy of ZrO₂ and enhanced densities. This work demonstrates that the bloating behavior of diopside glass-ceramics is attributed to the activation energy of nucleating agents.

Original language	English
Pages (from-to)	71-75
Number of pages	5
Journal	Materials Research Bulletin
Volume	96
DOIs	https://doi.org/10.1016/j.materresbull.2017.01.041
State	Published - 1 Dec 2017

Keywords

Activation energy
Diopside
Glass-ceramics
Nucleating agent

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10.1016/j.materresbull.2017.01.041

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Chou, C. C., Feng, K. C., Raevski, I. P., Chu, L. W., Chen, H., Chen, P. Y., Chen, C. S., Lee, H. W., & Tu, C. S. (2017). Part II: Phase transformation-induced bloating behavior in diopside glass-ceramics for microwave dielectrics. Materials Research Bulletin, 96, 71-75. https://doi.org/10.1016/j.materresbull.2017.01.041

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title = "Part II: Phase transformation-induced bloating behavior in diopside glass-ceramics for microwave dielectrics",

abstract = "Phase transformation and bloating behavior of CaMgSi2O6 glass-ceramics with ZrO2 nucleating agent using two-stage heat treatments were investigated as functions of annealing temperature. The specimens annealed below critical nucleation temperature (Tcn) and sintered at 950 °C exhibit significant bloating phenomena. Kinetic study of CaO-MgO-SiO2-ZrO2 (CMSZ) glasses annealed below Tcn reveals high activation energy of crystallization for the ZrO2 nucleation, and XRD refinement results show the least ZrO2 contents. The formations of fleeing oxygen and bloating are likely associated with high energy barrier of ZrO2 phase and zirconia dissolution in the CMSZ glass. Specimens annealed above the Tcn and sintered at 950 °C show significant reduction of activation energy of ZrO2 and enhanced densities. This work demonstrates that the bloating behavior of diopside glass-ceramics is attributed to the activation energy of nucleating agents.",

keywords = "Activation energy, Diopside, Glass-ceramics, Nucleating agent",

author = "Chou, {Chen Chia} and Feng, {Kuei Chih} and Raevski, {Igor P.} and Chu, {Li Wen} and Haydn Chen and Chen, {Pin Yi} and Chen, {Cheng Sao} and Lee, {Hao Wei} and Tu, {Chi Shun}",

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doi = "10.1016/j.materresbull.2017.01.041",

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AU - Chou, Chen Chia

AU - Feng, Kuei Chih

AU - Raevski, Igor P.

AU - Chu, Li Wen

AU - Chen, Haydn

AU - Chen, Pin Yi

AU - Chen, Cheng Sao

AU - Lee, Hao Wei

AU - Tu, Chi Shun

PY - 2017/12/1

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N2 - Phase transformation and bloating behavior of CaMgSi2O6 glass-ceramics with ZrO2 nucleating agent using two-stage heat treatments were investigated as functions of annealing temperature. The specimens annealed below critical nucleation temperature (Tcn) and sintered at 950 °C exhibit significant bloating phenomena. Kinetic study of CaO-MgO-SiO2-ZrO2 (CMSZ) glasses annealed below Tcn reveals high activation energy of crystallization for the ZrO2 nucleation, and XRD refinement results show the least ZrO2 contents. The formations of fleeing oxygen and bloating are likely associated with high energy barrier of ZrO2 phase and zirconia dissolution in the CMSZ glass. Specimens annealed above the Tcn and sintered at 950 °C show significant reduction of activation energy of ZrO2 and enhanced densities. This work demonstrates that the bloating behavior of diopside glass-ceramics is attributed to the activation energy of nucleating agents.

AB - Phase transformation and bloating behavior of CaMgSi2O6 glass-ceramics with ZrO2 nucleating agent using two-stage heat treatments were investigated as functions of annealing temperature. The specimens annealed below critical nucleation temperature (Tcn) and sintered at 950 °C exhibit significant bloating phenomena. Kinetic study of CaO-MgO-SiO2-ZrO2 (CMSZ) glasses annealed below Tcn reveals high activation energy of crystallization for the ZrO2 nucleation, and XRD refinement results show the least ZrO2 contents. The formations of fleeing oxygen and bloating are likely associated with high energy barrier of ZrO2 phase and zirconia dissolution in the CMSZ glass. Specimens annealed above the Tcn and sintered at 950 °C show significant reduction of activation energy of ZrO2 and enhanced densities. This work demonstrates that the bloating behavior of diopside glass-ceramics is attributed to the activation energy of nucleating agents.

KW - Activation energy

KW - Diopside

KW - Glass-ceramics

KW - Nucleating agent

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