高能等离子体脉冲对先进材料再固化表面的影响

IF 0.5 Q4 PHYSICS, NUCLEAR

Problems of Atomic Science and Technology Pub Date : 2023-10-12 DOI:10.46813/2023-147-015

S.S. Herashchenko, V.A. Makhlai, I.E. Garkusha, Yu.V. Petrov, N.N. Aksenov, N.V. Kulik, D.V. Yelisyeyev, P.B. Shevchuk, Y.E. Volkova, T.M. Merenkova, M. Wirtz

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引用次数: 0

摘要

研究了通过一系列重复等离子体脉冲引起钨熔炼对先进材料进行表面改性的方法。在不同等离子体脉冲持续时间的设施(QSPA, MPC和PPA)中暴露于等离子体后，研究了用于聚变和裂变应用的参考材料(IGP W, AM W/WTa, Hastelloy和EUROFER)受影响的面层特征。用扫描电子显微镜进行了详细的表面分析。结果表明，等离子体处理可使暴露表面快速再凝固，从而形成改性层。辐照材料的再固化层中出现了细小的细胞结构，典型的细胞尺寸在150 ~ 500 nm之间。暴露表面粗糙度的增加归因于裂纹和再凝固层的存在。

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FEATURES OF MODIFICATIONS IN THE RE-SOLIDIFIED SURFACES OF ADVANCED MATERIALS DUE TO HIGH-POWER PLASMA PULSES

The surface modification of advanced materials was studied through a series of repetitive plasma pulses caused tungsten melting. Features of the affected surface layers in reference materials (IGP W, AM W/WTa, Hastelloy, and EUROFER) for both fusion and fission applications were explored after exposure to plasma in the facilities (QSPA, MPC, and PPA) with different durations of plasma pulses. A detailed surface analysis was carried out with Scanning Electron Microscopy. It was found that the plasma treatment led to the formation of a modified layer as a result of the rapid re-solidification of the exposed surface. The fine cellular structures appeared in the re-solidified layers of the irradiated materials, with typical cell sizes ranging from 150 to 500 nm. An increase in the roughness of the exposed surfaces was attributed to the presence of the cracks and re-solidified layer.

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来源期刊

Problems of Atomic Science and Technology 物理-核科学技术

CiteScore

0.70

自引率

50.00%

发文量

审稿时长

2-4 weeks

期刊介绍： The journal covers the following topics: Physics of Radiation Effects and Radiation Materials Science; Nuclear Physics Investigations; Plasma Physics; Vacuum, Pure Materials and Superconductors; Plasma Electronics and New Methods of Acceleration.