Journal
MATERIALS SCIENCE AND TECHNOLOGY
Volume 25, Issue 8, Pages 960-968Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1179/174328408X311071
Keywords
Internal stress; Ni-W; Crystal structure; Amorphous
Funding
- National High Technology Research and Development Programme of China [2006AA4Z326]
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The present paper introduces the effect of W content, pH, current density, pulse ratio and stress reducers on the internal stress of Ni-W alloy films in the system of citrate amine HEDP. Morphologies of Ni-W alloy films were also investigated. The results showed that the internal stress was closely related to W content of alloy films. pH had an important effect on the internal stress of amorphous Ni-W alloy films and there were some cracks in the electrodeposits surface when pH value was in the range 5.5-6.0. Internal stress varied obviously with different current densities, however there were no obvious cracks in amorphous Ni-W alloy films. Internal stress was affected slightly by pulse ratio and stress reducers, and morphologies of amorphous Ni-W alloy films had little change with different pulse ratios and stress reducers.
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