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FP7

Failure modes of vacuum plasma spray tungsten coating created on carbon fibre composites under thermal loads

Funded under: FP7-EURATOM

Abstract

Vacuum plasma spray tungsten (VPS-W) coating created on a carbon fibre reinforced composite (CFC) was tested under two thermal load schemes in the electron beam facility to examine the operation limits and failure modes. In cyclic ELM-like short transient thermal loads, the VPS-W coating was destroyed sub-layer by sub-layer at 0.33 GW/ m{2} for 1 ms pulse duration. At longer single pulses, simulating steady-state thermal loads, the coating was destroyed at surface temperatures above 2700 °C by melting of the rhenium containing multilayer at the interface between VPS-W and CFC. The operation limits and failure modes of the VPS-W coating in the thermal load schemes are discussed in detail.

Additional information

Authors: HIRAI T, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);BEKRIS N, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);COAD J P, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);GRISOLIA C, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);LINKE J, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);MAIER H, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);MATTHEWS G F, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);PHILIPPS V, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);WESSEL E, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB)
Bibliographic Reference: An article published in: Journal of Nuclear Materials, Volume 392, Issue 1, 2009, pp. 40-44
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://dx.doi.org/doi:10.1016/j.jnucmat.2009.03.060
Record Number: 200910361 / Last updated on: 2009-09-22
Category: PUBLICATION
Original language: en
Available languages: en