Ryskulov Azamat, Shymanski Vitaliy, Ivanov Igor, Amanzhulov Bauyrzhan, Dauhaliuk Anastasia, Uglov Vladimir, Temir Adilet, Astashynski Valiantsin, Sapar Asset, Kuzmitski Anton, Ungarbayev Yerulan
Institute of Nuclear Physics, Almaty 050032, Kazakhstan.
Department of Solid State Physics, Belarusian State University, 220030 Minsk, Belarus.
Materials (Basel). 2024 Sep 10;17(18):4442. doi: 10.3390/ma17184442.
The paper presents the results of studying the structure and phase state of tungsten and tungsten-copper alloy after pulsed action of compression plasma flows and irradiation with helium ions. The compression plasma flows were used to modify the surface layer of tungsten, as well as to create an alloy based on tungsten and copper. Using scanning electron microscopy and X-ray structural analysis, the formation of radiation defects on the tungsten surface was detected in the form of local areas of exfoliation and destruction, which begin to form at helium ion irradiation doses of 2 × 10 cm. It is shown that preliminary plasma treatment of the surface in the melting mode leads to the complete disappearance of surface radiation defects up to a dose of 2 × 10 cm, which may be associated with the formation of a fine-crystalline grain structure, the intergranular boundaries of which serve as effective sinks for primary radiation defects.
本文介绍了在压缩等离子体流脉冲作用和氦离子辐照后，钨及钨铜合金的结构和相态研究结果。压缩等离子体流用于改性钨的表层，以及制备基于钨和铜的合金。通过扫描电子显微镜和X射线结构分析，检测到钨表面以局部剥落和破坏形式存在的辐射缺陷形成，这些缺陷在氦离子辐照剂量为2×10¹⁷cm⁻²时开始形成。结果表明，在熔化模式下对表面进行初步等离子体处理，可使高达2×10¹⁷cm⁻²剂量的表面辐射缺陷完全消失，这可能与形成细晶晶粒结构有关，其晶界是初级辐射缺陷的有效陷阱。
