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Open AccessArticle

Adhesion Performance of Electrodeposited Ni Films with Different Treating Methods

by 1,*, 1, 2 and 1
1
National Demonstration Center for Experimental Materials Science and Engineering Education, Jiangsu University of Science and Technology, Zhenjiang 212003, China
2
Key Laboratory for Thin Film and Microfabrication Technology of Ministry of Education, National Key Laboratory of Micro/Nano Fabrication Technology, Research Institute Micro/Nano Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, China
*
Author to whom correspondence should be addressed.
Coatings 2018, 8(6), 201; https://doi.org/10.3390/coatings8060201
Received: 17 April 2018 / Revised: 14 May 2018 / Accepted: 17 May 2018 / Published: 25 May 2018
The adhesion strength between thin films has a significant effect on performance of micro-devices. It is introduced that the effects of three pre-treatment methods: acid, pulse reverse current and anodic current, on the adhesion performance of electrodeposited Ni films on Ni substrate. The adhesion strength, surface and fracture morphology of the Ni films were investigated. The dense oxide films on the Ni substrate were removed effectively by using the anodic dissolution current method in the acidic chloride solutions. Meanwhile, the Ni films treated with specific treatment conditions produced different roughness, which was responsible for the improved adhesion strength. The adhesion strength of the Ni films increased up to 629.8 MPa when substrates were treated with anodic current density of 30 mA/cm2 for 10 min, which is nearly two times higher than that of films treated by 5 vol % HCl for 10 min. The results indicate that the anodic current treatment method effectively improves the adhesion strength of Ni films. View Full-Text
Keywords: electroplating; Ni laminated films; adhesion performance; anodic current treatment; micro-roughness electroplating; Ni laminated films; adhesion performance; anodic current treatment; micro-roughness
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MDPI and ACS Style

Liu, R.; Yuan, Y.; Wang, H.; Guo, X. Adhesion Performance of Electrodeposited Ni Films with Different Treating Methods. Coatings 2018, 8, 201.

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