UM
Part I: Effects of two-stage heat treatment on densification, microstructural features and dielectric properties of CaO-MgO-SiO2 glass-ceramics with ZrO2 nucleating agents
Chou, Chen Chia; Feng, Kuei Chih; Raevski, Igor P.; Chen, Haydn; Tsao, Chung-Ya; Chen, Pin-Yi; Chen, Cheng-Sao; Lu, Chun-An; Tu, Chi-Shun
2017-12
Conference NameMATERIALS RESEARCH BULLETIN
Volume96
Pages66-70
Publication PlaceTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
PublisherPERGAMON-ELSEVIER SCIENCE LTD
AbstractDensification, microstructures and dielectric properties of CaO-MgO-SiO2 glass-ceramics were investigated with ZrO2 nucleating agent using two-stage heat treatment in the low temperature co-fired ceramic (LTCC) method. The amorphous cullet (abbreviated as CMSZ glass) was synthesized by mixing CaO, MgO, and SiO2 powders with ZrO2 nucleating agent, which were melted at 1500 degrees C before the quenching process. The results show that CMSZ glasses annealed below the critical nucleation temperature (T-cn) and sintered at 950 degrees C exhibit obvious bloating phenomena. On the other hand, CMSZ glasses annealed above Tcn demonstrate that zirconia nucleation occurs at the first-stage heat treatment (annealing). The second-stage heat treatment (sintering) is characterized by the rapid crystal growth of CaMgSi2O6 phase around the ZrO2 crystallites, indicating growth of nuclei over the critical size above T-cn. Moreover, specimens fabricated using two-stage heat treatment and annealed above T-cn, exhibit appropriate microwave dielectric properties and high mechanical strength. (C) 2017 Elsevier Ltd. All rights reserved.
KeywordDiopside Glass-ceramics Nucleating agent Microwave dielecttics
DOI10.1016/j.materresbull.2017.01.040
URLView the original
Indexed BySCI ; CPCI
Language英语
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000413379800004
The Source to ArticleWOS
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Cited Times [WOS]:5   [WOS Record]     [Related Records in WOS]
Document TypeConference paper
CollectionUniversity of Macau
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GB/T 7714
Chou, Chen Chia,Feng, Kuei Chih,Raevski, Igor P.,et al. Part I: Effects of two-stage heat treatment on densification, microstructural features and dielectric properties of CaO-MgO-SiO2 glass-ceramics with ZrO2 nucleating agents[C]. THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND:PERGAMON-ELSEVIER SCIENCE LTD,2017:66-70.
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