Paper Title:
Non-Electrolytic Deposition of Silver on Tungsten Powders for Functionally Gradient Composite Powder
  Abstract

The research conducted was focused primarily on the development of a process for obtaining silver-coated tungsten powders for applications related to electrical-conducting devices. Particles of high strength material when coated with silver offer a means of obtaining desirable electrical properties and high strength. The coating process employed aqueous ammoniacal silvernitrate electrolytes with a formaldehyde solution as the reductant. Modifying additives were also applied. The reduction and subsequent deposition of silver occurred selectively on the surface of the tungsten particles. The morphologies of the coated particles were assessed by SEM imaging. The silver was uniformed coated on tungsten powder and its thickness was estimated to be approximately 100nm on the basis of a mass account.

  Info
Periodical
Materials Science Forum (Volumes 534-536)
Edited by
Duk Yong Yoon, Suk-Joong L. Kang, Kwang Yong Eun and Yong-Seog Kim
Pages
1469-1472
DOI
10.4028/www.scientific.net/MSF.534-536.1469
Citation
J. H. Lee, G. H. Chang, "Non-Electrolytic Deposition of Silver on Tungsten Powders for Functionally Gradient Composite Powder", Materials Science Forum, Vols. 534-536, pp. 1469-1472, 2007
Online since
January 2007
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Price
$32.00
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