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Concurrent sinter-crystallization and microwave dielectric characterization of CaO-MgO-TiO2-SiO2 glass-ceramics
| Content Provider | Scilit |
|---|---|
| Author | Zitani, Mahboubeh Kiani Banijamali, Sara Rüssel, Christian Abkenar, Sirous Khabbaz Mokhtari, Pozhhan Ren, Haishen Ebadzadeh, Touradj |
| Copyright Year | 2020 |
| Description | The present work aims to clarify sinter-crystallization behavior and microwave dielectric features of $CaO-MgO-TiO_{2}-SiO_{2}$ glass-ceramics fabricated via one-step sintering procedure at 800–950°C for 4 h. In this regard, starting glasses were obtained from a conventional melt quenching technique, then subjected to the sinter-crystallization heat treatment. The crystallization behavior of sintered glass-ceramics was studied using X-ray diffraction (XRD) and electron backscatter diffraction (EBSD). On the basis of the obtained results, diopside $(CaMgSi_{2}O_{6}$) precipitated as the main crystalline phase in all sintered glass-ceramics; however titanite $(CaTiSiO_{5}$) was found as the secondary crystalline phase in glass-ceramics containing high $TiO_{2}$ content. The degrees of crystallization of the glass-ceramics prepared procedures were also characterized. Optimized glass-ceramics sintered at 800°C for 4 h showed the maximum relative density of 99%. Further increase of sintering temperature led to gradual decrease of density. The most promising microwave dielectric properties of the sintered glass-ceramics were as $ε_{r}$ = 6.8–9.4 and Q × f = 3,735–41,359 GHz. |
| Related Links | https://www.tandfonline.com/doi/pdf/10.1080/21870764.2020.1725258?needAccess=true |
| Ending Page | 244 |
| Page Count | 11 |
| Starting Page | 234 |
| e-ISSN | 21870764 |
| DOI | 10.1080/21870764.2020.1725258 |
| Journal | Journal of Asian Ceramic Societies |
| Issue Number | 2 |
| Volume Number | 8 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2020-04-02 |
| Access Restriction | Open |
| Subject Keyword | Ceramics Glass-ceramic Sintering Crystallization Diopside Titanite Dielectric Properties |
| Content Type | Text |
| Resource Type | Article |
