Deuterium blistering in tungsten and tungsten vanadium alloys

TitleDeuterium blistering in tungsten and tungsten vanadium alloys
Publication TypeJournal Article
Year of Publication2016
AuthorsK. Arshad, Y. Yuan, L. Cheng, J. Wang, Z.J Zhou, G. De Temmerman, G.H Lu
JournalFusion Engineering and Design
Volume107
Pagination25-31
Date Published06/2016
KeywordsBlistering, Deuterium plasma, Tungsten-vanadium alloy
Abstract

In order to evaluate D blistering behavior in W based plasma facing materials, rolled W and different grades of W-V targets were exposed to high flux of 1.2 × 1024 m−2 s−1, low energy (38 eV) D plasma at two different surface temperatures. The blistering behavior was investigated by means of scanning electron microscopy, accompanied by electron back-scattering diffraction. Highest numbers of blisters were observed on the surface of rolled tungsten. The addition of V precursor to W suppressed D blister formation. In the case of W-V alloys, comparatively submicron V-containing materials have shown high tendency but small size blisters formation than micron V-containing samples. A high density of blisters was observed near the (111) plane on the surface of both V-containing alloys. Nano-sized blisters were also observed on V enriched surface.

DOI10.1016/j.fusengdes.2016.03.072
Division

PSI

Department

PSI-E

PID

8bab1f7dc731974d8c52f57de667c458

Alternate TitleFusion Eng. Des.

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