Author/Authors :
Hirai، نويسنده , , T. and Bekris، نويسنده , , N. and Coad، نويسنده , , J.P. and Grisolia، نويسنده , , C. and Linke، نويسنده , , J. and Maier، نويسنده , , H. and Matthews، نويسنده , , G.F. and Philipps، نويسنده , , V. and Wessel، نويسنده , , E.، نويسنده ,
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/m2 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.
