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High-dome blisters formed by deuterium-induced local superplasticity

重水素誘起の局所超塑性による高いドームのブリスタの形成

洲 亘

Shu, Wataru

500K付近で重水素プラズマに曝されたタングステン表面に現れた高いドームのブリスタが重水素-空孔のクラスタの形成,拡散と凝集によるものと考えられ、このような変形を重水素誘起の局所超塑性と呼ぶ。数ミクロン以下のブリスタ内部には空洞があるが、数ミクロン以上のブリスタには蓋がない。このような特徴が従来報告されていたブリスタと異なっている。

The high-dome blisters appearing on tungsten after deuterium plasma exposure at around 500K are considered to be generated by the diffusion and agglomeration of the deuterium-vacancy clusters, and this kind of deformation is called as deuterium-induced local superplasticity. There were cavities inside the blisters smaller than a few micrometers, whereas there were no hollow lids formed for some blisters greater than a few micrometers, which is contrary to the typical feature of blisters reported before.

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パーセンタイル:81.02

分野:Physics, Applied

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