Behavior of Thick SiC Gradient Coatings on Graphite under High Heat Flux and HT-7 Limiter Plasma Irradiation

H. Li; Jin Gang Li; Jin Long Chen

doi:10.4028/www.scientific.net/MSF.475-479.1367

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Behavior of Thick SiC Gradient Coatings on Graphite under High Heat Flux and HT-7 Limiter Plasma Irradiation
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HomeMaterials Science ForumMaterials Science Forum Vols. 475-479Behavior of Thick SiC Gradient Coatings on...

Behavior of Thick SiC Gradient Coatings on Graphite under High Heat Flux and HT-7 Limiter Plasma Irradiation

Abstract:

The behavior of thick SiC gradient coatings on different graphites under high power electron beam irradiation, pulsed high energy laser impact, and HT-7 limiter plasma action was investigated. In the following tests at these facilities, the samples were examined using SIMS, EDAX, X-ray crystallography, profilometer and Auger spectroscopy. Thick SiC gradient coatings showed excellent durability under high heat flux and in real conditions of HT-7 limiter plasma irradiation. The primary results indicated that the use of multi-element doped graphite, GBST1308 (1%B4C, 2.5%Si, 7.5%Ti) with high thermal conductivity, as substrate will improve the durability of thick SiC gradient coatings significantly.

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Periodical:

Materials Science Forum (Volumes 475-479)

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1367-1370

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.475-479.1367

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Online since:

January 2005

Authors:

H. Li, Jin Gang Li, Jin Long Chen

Keywords:

Graphite, High Heat Flux, Irradiation, Limiter, SiC Gradient Coatings

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