Relationship between saturation by hydrogen in materials during electrodeposition and their porosity
DOI:
https://doi.org/10.15587/1729-4061.2012.5715Keywords:
porosity, electrodeposited material, hydrogenAbstract
The aim of the work was the experimental verification of the validity of the phenomenon of phase formation through a stage of liquid state in metallic materials being electrodeposited. As phase formation of a material being electrodeposited occurs in saturated hydrogen environment, in case of validity of the discussed phenomenon the porosity of an electrodeposited material should depend on the degree of its saturation by hydrogen during electrodeposition.
The electrodeposited copper samples obtained in saturated hydrogen environment were used as model samples. At that, the ratio between volume of hydrogen evolved on the cathode and volume of electrodeposited copper was determined. This ratio was a measure of saturation by hydrogen of copper being electrodeposited. The relative area of pores on the surface of a sample, the quantity of pores per 1 mm2 of sample’s surface and average diameter of pores were used as quantitative characteristics of porosity of the material being investigated.
As a result of completed research it was found that saturation by hydrogen during electrodeposition of a metallic material is one of the major factors that determine its porosity. The increase of relative area of pores and their quantity in the material with the increase of the degree of its saturation by hydrogen during electrodeposition proves the validity of the phenomenon of phase formation through a stage of liquid state in metallic materials being electrodepositedReferences
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