| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1506920 | Solid State Sciences | 2006 | 5 Pages |
Abstract
A well-crystalline BaWO4 film has been prepared on a tungsten substrate in an alkaline solution containing barium ions through a simple chemical reaction method at room temperature via the reaction between Ba2+ and WO42−. The acceleration of the oxidation/dissolution of the tungsten substrate to form WO42− with an oxidizing agent, H2O2, seems to be the key to the success. Prismatic crystals of a typical grain size of about 8 μm were grown to the thickness of about 10–20 μm after the 2–3 hour treatment. The effect of solution pH, concentration of Ba2+ ions and H2O2 on the formation of BaWO4 crystals were studied in detail with reaction mechanism.
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Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Dinesh Rangappa, Takeshi Fujiwara, Masahiro Yoshimura,