Perforation and Carbon Ablation Experiments on Nano-Ceria by Electron Irradiation

机译：电子辐照纳米二氧化铈的穿孔和碳烧蚀实验

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The well-known high irradiation resistance of fluorite-structured oxides is examined on the nanoscale by focused electron beam irradiation of ceria nanoparticles. It is found that ceria is amongst the nanomaterials most resistant to electron beam perforation with mainly swelling and amorphisation damage observed, along with grain reorientation effects. A comparison to reference nano-materials, shows that cubic zirconia behaves similarly resistant but that ultra-fine holes can be drilled, unlike for ceria, while SiC on the other hand can be perforated easily. Ablation of carbon films around electron beam impact zones is found accelerated in ceria, as compared to SiC, and discussed as a potential catalytic effect.

机译：通过二氧化铈纳米粒子的聚焦电子束辐照，在纳米级上检查了萤石结构氧化物的众所周知的高辐照强度。发现二氧化铈是最耐电子束穿孔的纳米材料之一，主要观察到膨胀和非晶化损伤，以及晶粒重新定向作用。与参考纳米材料的比较表明，立方氧化锆具有类似的抗性，但与二氧化铈不同的是，可以钻超细孔，而SiC则很容易打孔。与SiC相比，发现在二氧化铈中电子束撞击区周围的碳膜烧蚀得到了加速，并被认为是潜在的催化作用。

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《Nanostructured metal oxides for advanced applications》|2013年|125-130|共6页
会议地点 San Francisco CA(US)
作者
Umananda M. Bhatta; Faris Karounis; Andrew Stringfellow; Guenter Moebus;
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Dept. Materials Science and Engineering, University of Sheffield, Sheffield S1 3JD, UK;

Dept. Materials Science and Engineering, University of Sheffield, Sheffield S1 3JD, UK;

Dept. Materials Science and Engineering, University of Sheffield, Sheffield S1 3JD, UK;

Dept. Materials Science and Engineering, University of Sheffield, Sheffield S1 3JD, UK;

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Perforation and Carbon Ablation Experiments on Nano-Ceria by Electron Irradiation

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