Performance of Eurofer97 under deuterium plasma exposure with seeded impurities at elevated temperature

被引：2

作者：

Rasinski, M. ^{[1
]}

Kreter, A. ^{[1
]}

Moeller, S. ^{[1
]}

Brezinsek, S. ^{[1
]}

Linsmeier, C. ^{[1
]}

机构：

[1] Forschungszentrum Julich, Inst Energie & Klimaforsch Plasmaphys, D-52425 Julich, Germany

来源：

PHYSICA SCRIPTA | 2020年 / T171卷 / 01期

关键词：

Eurofer97; deuterium retention; tungsten enrichment; sputtering; reduced activation ferritic martensitic (RAFM) steels; SURFACE-MORPHOLOGY; LOW-ENERGY; STEEL; TUNGSTEN; EROSION; F82H; ENRICHMENT;

D O I：

10.1088/1402-4896/ab4b27

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Eurofer97, P92 and Fe samples were exposed simultaneously in the linear plasma device PSI-2 to deuterium plasma and with addition of He, Ar or Kr at elevated temperature in the range of 800-950 K. Samples were exposed to plasma with an incident ion energy of 60-80 eV and an incident ion fluence of 5 x 10(25)m(-2). Surface morphology investigation of exposed samples reveals formation of fuzz-like structures on the surface steels when exposed to D and D+He plasma. Tungsten enrichment on the surface of the steels was observed after all exposures, but the average tungsten concentration varied from 4 to 18 at.%, depending on plasma composition. The highest tungsten enrichment on the surface was observed for samples exposed to D+He plasma. Addition of He to the plasma increased D retention, which was attributed to near-surface bubble formation, confirmed by transmission electron microscopy studies.

引用

页数：5