Interfacial reactions and mechanical properties of W-SiC in-situ joints for plasma facing components

被引：41

作者：

Son, SJ ^{[1
]}

Park, KH

Katoh, Y

Kohyama, A

机构：

[1] Kyoto Univ, Inst Adv Energy, Kohyama Lab, Kyoto 6110011, Japan

[2] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[3] Kyoto Univ, Grad Sch Energy Sci, Uji, Kyoto 6110011, Japan

来源：

JOURNAL OF NUCLEAR MATERIALS | 2004年 / 329卷

关键词：

D O I：

10.1016/j.jnucmat.2004.04.285

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

Joints of tungsten and SiC were produced by a hot-pressing method and characterized on interfacial reaction and ambient temperature mechanical properties. Reaction phases were identified and the diffusion path was demonstrated by means of quantitative analysis. Four distinctive reaction phases, namely tungsten silicides (WSi2, W5Si3) and tungsten carbides (WC, W2C), were formed in various processing conditions. Complex reactions were confirmed in tungsten-SiC diffusion pair, and the diffusion path was experimentally verified as SiC/WSi2/WC/W5Si3/W2C/W. Mechanical properties of the joints were evaluated by flexural and shear tests. Joint shear strength as high as similar to90 MPa was obtained even when substantial interfacial reaction occurred, however, excessive growth of the reaction layer caused a severe degradation in strength. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：1549 / 1552

页数：4

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