Influence of V2O5 and B2O3 addition on the sintering behaviour and physical properties of ZnO ceramics
Processing and Application of Ceramics, cilt.16, sa.1, ss.48-54, 2022 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 16 Sayı: 1
- Basım Tarihi: 2022
- Doi Numarası: 10.2298/pac2201048y
- Dergi Adı: Processing and Application of Ceramics
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Directory of Open Access Journals
- Sayfa Sayıları: ss.48-54
- İstanbul Üniversitesi-Cerrahpaşa Adresli: Evet
Özet
The effect of V2O5
and B2O3
additions on sintering behaviour and physical properties of ZnO ceramics was
investigated. XRD studies revealed ZnO as main phase with a hexagonal wurtzite-type structure. The V2O5
addition is the reason for an increase in grain size and some grains of oblong shape morphology in the ZnO
ceramics. The dual addition of V2O5
-B2O3
improved the liquid-assisted sintering of ZnO ceramics and resulted
in further increase in grain size with more uniform grain growth. The reduction of sintering temperature to
900 °C for ZnO ceramics was observed with the dual addition of V2O5
and B2O3
. The room temperature PL
spectra of the Z (ZnO), ZV (ZnO with 0.5 mol% V2O5
) and ZVB (ZnO with 0.5 mol% V2O5
and 0.5 mol%
B2O3
) ceramics revealed broad visible emission band because of impurities and defects in ZnO ceramics
caused by oxygen vacancies due to vanadium and boron additions, as well as zinc interstitials. This emission
band between 450–750 nm includes the entire visible region from blue to red.
Keywords: boron oxide, ceramics, sintering, vanadium pentoxide, zinc oxide