Electrically conductive tungsten silicide coatings for EMI/RFI shielding of optically transparent windows

被引：10

作者：

Savrun, E

Del Aguila, H

机构：

[1] Sienna Technol Inc, Woodinville, WA 98072 USA

[2] USAF, Phillips Lab, Weap Syst Directorate, Albuquerque, NM 87117 USA

来源：

JOURNAL OF MATERIALS SCIENCE | 1998年 / 33卷 / 11期

关键词：

Carbide; Gallium; Arsenide; Gallium Arsenide; Zinc Sulphide;

D O I：

10.1023/A:1017554307521

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Conductive metal mesh coatings on external surfaces of infrared (IR) windows reduce the electromagnetic and radio frequency interference (EMI/RFI) but are mechanically soft and easily damaged. Surface-doped semiconductors, such as gallium arsenide, have optical absorption and emission problems, while semiconducting carbide coatings, such as germanium carbide, suffer performance loss at the low end of the required temperature range. Electrically conductive tungsten silicide have been investigated for use in erosion-resistant EMI/RFI protective coatings for IR windows and radomes. Tungsten silicide films were sputtered on zinc sulphide substrates, electrical properties were evaluated, and shielding effectiveness was measured over 400 MHz to 18 GHz. The relevant results are presented and discussed. (C) 1998 Kluwer Academic Publishers.

引用

页码：2893 / 2897

页数：5

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