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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Creep Behaviour and Microstructure of Ultrafine Grained Iron Processed by ECAP
 Král, Petr ; Dvořák, Jiří ; Kvapilová, Marie ; Svoboda, Milan ; Sklenička, Václav
Pure iron (99.99%) was subjected to equal-channel angular pressing (ECAP) with a die having an internal channel of 90°. The subsequent extrusion passes were performed by route A up to 4 passes. The microstructures of UFG iron were investigated using EBSD (electron back scatter diffraction) and transmission el. microscopy (TEM). Tension creep tests were performed on the as-pressed samples at temperature of 773 K and under applied load 60 MPa. For comparison purposes the same creep test was performed also on the unpressed state. The effect of number ECAP passes on creep behavior of pure Fe was investigated. Results showed that the creep resistance of pure Fe after ECAP is improved in comparison with the unpressed state.
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Application of the Electrospun Nanofibers in Wastewater Treatment
 Lev, J. ; Holba, Marek ; Kalhotka, L. ; Szostková, M. ; Kimmer, D.
Electrospun nanofiber filters were used for treated wastewater treatment plant outlets. The efficiency fot the pathogen removal was monitored towards Czech government directions about water reuse.
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