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Study of properties of tungsten irradiated in hydrogen atmosphere

I. Tazhibayeva, M. Skakov, V. Baklanov, E. Koyanbayev, A. Miniyazov, T. Kulsartov, Yu. Ponkratov, Yu. Gordienko, Zh. Zaurbekova, I. Kukushkin2017年被引用 16Nuclear FusionIF 3出版社

The paper presents the results of the experiments with DF (double forged) tungsten samples irradiated at the WWR-K research reactor in hydrogen and helium atmospheres. The irradiation time was 3255 h (135.6 d). After reactor irradiation, W samples have been subjected to investigations of their activity level, hardness, and microstructure, as well as x-ray and texture observations. The hydrogen yield released from irradiated tungsten samples have been measured using TDS-method. The hydrogen concentration in the tungsten samples irradiated in hydrogen was higher than that in the samples irradiated in helium atmosphere. It is shown that the surface microstructure of tungsten samples irradiated in hydrogen is characterized by micro-pits, inclusions and blisters in the form of bubbles, which were not observed earlier for tungsten irradiated in hydrogen.

日本語訳

本論文は、水素およびヘリウム雰囲気下でWWR原子炉において照射された二重鍛造(DF)タングステン試料を用いた実験結果を示すものである。照射時間は3255時間(135.6日)であった。原子炉照射後、W試料はその放射能レベル、硬さ、微細組織、ならびにX線および組織観察による調査が行われた。照射されたタングステンから放出される水素は、TDS法を用いて測定された。水素雰囲気中で照射されたタングステン中の水素濃度は、ヘリウム雰囲気中で照射された試料よりも高かった。水素雰囲気中で照射されたタングステンの表面微細組織は、微細ピット、介在物、およびバブルの形態を特徴とすることが示されたが、これらは水素中で照射されたタングステンにおいてはこれまで観察されていなかったものである。

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