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The structure of Bi2VO5.5 ceramics was measured by XRD.
Polycrystalline Bi2VO5.5 ceramic (BiVceramic) was synthesised via a conventional solid state reaction route. The stoichiometric mixture of initial powders of Bi2O3 and V2O5were ball-milled in pure acetone for 6 h. The milling was performed in steps of 1 h with rest intervals of 10 min. The mixture was initially heated up to 770 K and then to 1020 K in air. It was kept at this temperature for 24 h and grinded next. The formation of the compound was confirmed by X-ray powder diffraction studies. The calcined powder was mixed with a small amount of ethyl alcohol binder and cold-pressed into pellets (12 mm in diameter and 2–3 mmin thickness) under a compacting pressure of 26 kNcm−2. The obtained pellets were sintered at 1070 K for 24 hwith heating and cooling rates of 50 Kh−1.
Moreover, two additional samples were prepared by the conventional melt quenching technique. First one was prepared from powdered ceramic Bi2VO5.5 (in folder BiVglass, name:BiVas quenched ceramic), and the second one from appropriate amounts of Bi2O3 and V2O5 powders (in folder BiVglass, name: BiVas quenched powders). The melting was conducted in alumina crucibles at 1173 K for few minutes. The melt was poured onto a preheated (573 K) brass plate and pressed by another plate to obtain flat circular disks.
Additionally, melted samples were heat treated at 650 degC for 1h (in folder BiVglass, name:BiVas quenched ceramic/powder crystallized).
The presence of crystalline phases and their phase composition were studied using an X-ray diffraction (XRD) method using a Philips X'Pert Pro MPD system with CuKα radiation. The XRD measurements were conducted at powdered pre-prepared samples at romm temperature.
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hexmd5(md5(part1)+md5(part2)+...)-{parts_count} gdzie pojedyncza część pliku jest wielkości 512 MBPrzykładowy skrypt do wyliczenia:
https://github.com/antespi/s3md5
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Informacje szczegółowe
- Rok publikacji:
- 2015
- Data zatwierdzenia:
- 2021-05-25
- Język danych badawczych:
- angielski
- Dyscypliny:
-
- inżynieria materiałowa (Dziedzina nauk inżynieryjno-technicznych)
- DOI:
- Identyfikator DOI 10.34808/fkvy-5w51 otwiera się w nowej karcie
- Weryfikacja:
- Politechnika Gdańska
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