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Development of localized electrochemical deposition

Authors: Proper, Sebastian;

Development of localized electrochemical deposition

Abstract

In the manufacturing industry, parts are created with high demands on their mechanical properties. To avoid surface defects, components are over-dimensioned and then machined to the desired size. This will give rise to material waste and extra processing steps. Therefore, it is of interest to investigate methods to repair these surface defects without the need of over-dimensioning. In this thesis work, different strategies for localized electrochemical deposition have been investigated with respect to their ability to perform local repair of surface defects. The concepts that have been studied include the application of a microanode, a confined bath, and of liquid marbles. The different methods were tested and the process parameters were optimized to achieve good quality deposits at sufficient growth rates. The best deposits were then further characterized with respect to grain size distribution, crystal orientation and surface quality. The ability to repair a surface defect was also studied along with the possibility of producing thicker deposits. The confined bath method was the most promising concept. At a current density of 3.5 A/dm2, a good quality deposit was achieved. The crystal orientations proved to be random and the average grain size was 115 ± 61 nm. A surface defect with a depth of 33.0 µm and a width of 19.8 µm was successfully repaired using this local deposition method. However, the technique needs further development for the desired application in manufacturing industry.

Country
Sweden
Related Organizations
Keywords

additive, electrochemical, Chemical Engineering, repairing, deposition, indentation, manufacturing, electrochemistry, Kemiteknik, localized, LECD, Metallurgy and Metallic Materials, Manufacturing, Surface and Joining Technology, Metallurgi och metalliska material, Bearbetnings-, yt- och fogningsteknik

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average