Powders Utilizing BaTaO2N Decomposition
The current methodology for perovskite oxynitride synthesis is a gas–solid reaction with ammonia. However, a competing reaction exists, where ammonia dissociates to inert N2, rather than a nascent, active nitriding species. Therefore, oxynitride synthesis is controlled by the composition of the gas phase. Control of key processing variables (temperature, flow velocity, sample placement, temperature distribution, furnace configuration) determines the gas‐phase components (
, NH3 ,
and N2 ) and subsequently, the reaction rate and purity of H2 powders.
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Document Type: Research Article
Publication date: 01 December 2011