UM
Zirconia nucleating agent on microstructural and electrical properties of a CaMgSi 2 O 6 diopside glass-ceramic for microwave dielectrics
Feng K.-C.2; Chou C.-C.2; Chu L.-W.1; Chen H.3
2012-10-01
Source PublicationMaterials Research Bulletin
Volume47
Issue10
Pages2851-2855
AbstractAddition of different amount of zirconia (ZrO ) nucleating agent into MgO-CaO-SiO system to enhance the quality factor (Q × f) of CaMgSi O diopside glass-ceramic for low sintering temperature process (from 850 to 950 °C) was carried out in this work. The microstructures, microwave dielectric properties and nucleating/growth mechanism of m-ZrO added CaMgSi O system were analyzed using transmission electron microscopy (TEM) and electrical property measurements. Experimental results demonstrate that a solid solution of an amorphous phase MgO-CaO-SiO and ZrO forms after melted at 1500 °C. The t-ZrO appears in the amorphous matrix first and then crystalline CaMgSi O particle grows up at around the boundary of t-ZrO after thermal treatment at 850 °C due to heterogeneous nucleating. Formation of t-ZrO is attributed to diffusion of Ca to stabilize the m-ZrO . The quality factor of CaMgSi O was significantly enhanced by adding 3 wt.% m-ZrO , indicating that the ZrO nucleating agent could enhance crystallization and therefore increase the quality factor. © 2012 Elsevier Ltd. All rights reserved.
KeywordA. Ceramics A. Glasses C. Electron microscopy D. Dielectric properties D. Microstructure
DOI10.1016/j.materresbull.2012.04.046
URLView the original
Language英語
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Cited Times [WOS]:25   [WOS Record]     [Related Records in WOS]
Document TypeConference paper
CollectionUniversity of Macau
Affiliation1.Walsin Technology Corporation
2.National Taiwan University of Science and Technology
3.Tunghai University
Recommended Citation
GB/T 7714
Feng K.-C.,Chou C.-C.,Chu L.-W.,et al. Zirconia nucleating agent on microstructural and electrical properties of a CaMgSi 2 O 6 diopside glass-ceramic for microwave dielectrics[C],2012:2851-2855.
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