Ceramics-Silikáty 54, (4) 310 - 314 (2010) |
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EFFECTS OF BORON OXIDE ADDITION ON DIELECTRIC PROPERTIES OF LOW LOSS STEATITE CERAMICS
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Aslanoglu Ziya 1, Soykan Hüseyin S. 2, Erdem Zehra 3,
Şenturk Erdogan 3
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1 Superates Refractory Inc. Maslak Mah. Maslak Ayazaga Cad. No:9 34398 Sisli/Istanbul, Turkey
2 Marzinc Marmara Geri Kazanim A.Ş., Barbaros Bulvari No:93B Beşiktaş/Istanbul, Turkey
3 Sakarya University, Dept. of Physics, 54100, Sakarya, Turkey
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Keywords: Dielectric properties, Boron oxide, Conductivity, Steatite
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Steatite ceramics have been fabricated by using starting materials such as talc, clay, and barium carbonate with addition of
boron oxide (B₂O₃). B₂O₃ has been found to be a useful flux to densify MgO–Al₂O₃–SiO₂–BaO (MASB) powders. The steatite
ceramic with a relative density of 97% was obtained at a sintering temperature of 1200 °C. The effects of B₂O₃ additions
on the dielectric properties of the samples have been investigated. Doping with B₂O₃ significantly affects the dielectric
properties. The values of dielectric properties of the samples changes with B₂O₃ addition. This may be attributed to the quartz
phase. Hence, a ceramic with lower dielectric loss was obtained for use in high temperature electrical applications. |
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