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Bonding of Tungsten and Graphite Using Spark Plasma Sintering for Divertor Component in LHD

Takanori MURASE¹⁾, Tomohiro MORISAKI^1,2), Toshiaki SOGABE³⁾ and Tomohiro SHIOZAKI³⁾

1)

National Institute for Fusion Science, 322-6 Oroshi-cho, Toki, Gifu 509-5292, Japan

2)

The Graduate University for Advanced Studies, SOKENDAI, Toki, Gifu 509-5292, Japan

3)

ANAORI Carbon Co., Ltd., 6-20 Hatakeda-cho, Ibaraki, Osaka 567-0028, Japan

(Received 30 September 2022 / Accepted 28 November 2022 / Published 30 January 2023)

Abstract

The manufacturing of tungsten (W) - graphite bonded divertor components for the Large Helical Device (LHD) has been investigated. The spark plasma sintering method was used to bond W and graphite with titanium (Ti) interlayer. Small specimens were fabricated to investigate the bonding strength and to diagnose the bonding interface. The granular structure was formed in the grooved area on the graphite surface. It was suggested that this granular structure had affected the bonding strength.

Copyright (c) 2023 The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

tungsten, graphite, speak plasma sintering, LHD, divertor component

DOI: 10.1585/pfr.18.1205003

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