Nano-explosion synthesis of multi-component ceramic nano-composites

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• 作者：Oleg Vasylkiv ; Yoshio Sakka ; Valeriy V. Skorokhod
• 关键词：Powders-chemical preparation ; Calcination ; Nanocomposites ; CeO₂ ; ZrO₂
• 刊名：Journal of the European Ceramic Society
• 出版年：2007
• 出版时间：2007
• 年：2007
• 卷：27
• 期：2-3
• 页码：585-592
• 全文大小：1202 K

文摘

Here we demonstrate a unique processing technique which is based on engineering multi-component ceramic nanopowders and composites with precise morphology by nano-explosive deagglomeration/calcination. Multiple nano-explosions of impregnated cyclotrimethylene trinitramine deagglomerate the nanopowder due to the highly energetic impacts of the blast waves, while the solid-solubility of one component into the other is enhanced by the extremely high local temperature generated during the nano-explosions. We applied this technique to produce nanosize agglomerate-free ceria–gadolinia solid solution powder with uniform morphology and an average aggregate size of 32 nm, and 8 mol % yttria-doped zirconia aggregates with an average size of 53 nm impregnated with platinum (2–14 nm).