Features of porous structure in electrodeposited materials
DOI:
https://doi.org/10.15587/1729-4061.2012.4632Keywords:
porous structure, electrodeposited material, casting material, hydrogen.Abstract
The aim of the work was the experimental proof of the validity of the phenomenon of phase formation of metallic materials being electrodeposited through a stage of liquid state. The idea of the work was as follows. As phase formation of a material being electrodeposited occurs in saturated hydrogen environment, in case of validity of the discussed phenomenon porous structure of an electrodeposited material must have typical features of porous structure of a cast material solidified from liquid state in saturated hydrogen environment. To realize the idea an inductive arc unit, which allows obtaining of a cast material in saturated hydrogen environment, was constructed and produced. The unit provided solidification of a material at high adjustable rate of movement of plane crystallization front. As modeling materials the electrodeposited chromium and aluminum bronze melted and solidified in hydrogen environment were used. As a result of the completed investigations it was found, that porous structure of an electrodeposited material possesses all typical features of porous structure of a cast material solidified from liquid state in saturated hydrogen environment. The identity of orientation and form of pores in an electrodeposited and in a cast material, the effects of pores coagulation and termination of pores growth and new pores initiation during the whole crystallization period at electrodeposition prove the validity of the phenomenon of phase formation of metallic materials being electrodeposited through a stage of liquid state.References
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