Edge profiles and limiter tests in Extrap T2

被引：3

作者：

Bergsåker, H ^{[1
]}

Hedin, G ^{[1
]}

Ilyinsky, L ^{[1
]}

Larsson, D ^{[1
]}

Möller, A ^{[1
]}

机构：

[1] Royal Inst Technol, Alfven Lab, EURATOM, NFR Fus Assoc, S-10044 Stockholm, Sweden

来源：

JOURNAL OF NUCLEAR MATERIALS | 1999年 / 266卷

关键词：

reversed field pinch; high-z material; surface damage;

D O I：

10.1016/S0022-3115(98)00548-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

New edge profile measurements, including calorimetric measurements of the parallel heat flux, were made in Extrap T2. Test limiters of pure molybdenum and the TZM molybdenum alloy have been exposed in the edge plasma. The surface damage was studied, mainly by microscopy. Tungsten coated graphite probes were also exposed, and the surfaces were studied by microscopy, ion beam analysis and XPS. In this case cracking and mixing of carbon and tungsten at the interface was observed in the most heated areas: whereas carbide formation at the surface was seen in less heated areas. In these tests pure Mo generally fared better than TZM, and thin and cleaner coatings fared better than thicker and less dean. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：777 / 782

页数：6

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