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Manufacturing, high heat flux testing and post mortem analyses of a W-PIM mock-up

Antusch, Steffen; Visca, E.; Klein, Alexander; Walter, Heinz; Pursche, Kilian; Wirtz, M.; Loewenhoff, T.; Greuner, H.; Böswirth, B.; Hoffmann, Jan; Bolich, Daniel; Pintsuk, G.; Rieth, Michael

Abstract:
In the framework of the European material development programme for fusion power plants beyond the international thermonuclear experimental reactor (ITER), tungsten (W) is an attractive candidate as plasma facing material for future fusion reactors. The selection of tungsten is owing to its physical properties such as the high melting point of 3420 °C, the high strength and thermal conductivity, the low thermal expansion and low erosion rate. Disadvantages are the low ductility and fracture toughness at room temperature, low oxidation resistance, and the manufacturing by mechanical machining such as milling and turning, because it is extremely cost and time intensive.

Powder Injection Molding (PIM) as near-net-shape technology allows the mass production of complex parts, the direct joining of different materials and the development and manufacturing of composite and prototype materials presenting an interesting alternative process route to conventional manufacturing technologies. With its high precision, the PIM process offers the advantage of reduced costs compared to conventional machining. Isotropic materials, good thermal shock resistance, and high shape complexity are typical properties of PIM tungsten.

This contribution describes the fabrication of tungsten monoblocks, in particular for applications in divertor components, via PIM. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000096372
Veröffentlicht am 11.07.2019
Originalveröffentlichung
DOI: 10.1016/j.nme.2019.100688
Coverbild
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Werkstoffkunde (IAM-WK)
Publikationstyp Zeitschriftenaufsatz
Jahr 2019
Sprache Englisch
Identifikator ISSN: 2352-1791
KITopen-ID: 1000096372
Erschienen in Nuclear materials and energy
Band 20
Seiten Art.-Nr.: 100688
Schlagworte Powder Injection Molding (PIM), Hot Radial Pressing (HRP), Tungsten, Monoblock, Mock-up, HHF testing
Nachgewiesen in Scopus
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