MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Effect of Copper Addition on the Niobium Disilicide Coatings by Pack Cementation
Ming LiLixin SongJun LeXiaowei ZhangBaogen PeiXingfang Hu
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2004 Volume 45 Issue 8 Pages 2785-2787

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Abstract

NbSi2 coatings were deposited on pure niobium by halide-activated pack cementation method. The effect of copper addition in pack mixture on the siliconizing process was investigated. After siliconizing on niobium at 1050°C for 2 h using a pack mixture composed of Si, NaF and SiC, a single phase of hexagonal NbSi2 coating was formed. The addition of copper in pack mixture not only increased the growth rate of the coatings, but also led to form a very thin interlayer between the NbSi2 coating and the niobium substrate.

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© 2004 The Japan Institute of Metals and Materials
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