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| Abstract |
In view of the recent interest in high Z metals as plasma facing materials, high heat load experiments by irradiation of electron beam were performed on CVD tungsten coated molybdenum samples in order... to prove the suitability and the load limit of such coating materials. Measurements were made with respect to heat load properties, surface modification and structure change of cross section of the samples. These results indicate that the thermal and adhesion properties between the substrate and coating were good under high heat load (peak temperature was 2500$^circ$C). It was also shown that enbrittlement by recrystallization was suppressed very much in the high purity CVD tungsten.show more
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