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Year 2011 No 1

E. Tillová, E. Ďuriníková, M. Chalupová
STRUCTURAL ANALYSIS OF SECONDARY AlZn10Si8Mg CAST ALLOY
Keywords: aluminium alloys|microstructure|microscopy and microanalysis techniques|intermetallic phases|
No 1 (2011), p. 4-10
  mag01.pdf (487 kB)
mag01_eng.txt (2 kB)  

H. Lukáčová, B. Plešingerová, M. Vojtko
BIOACTIVITY OF CHEMICAL, ELECTROCHEMICAL AND THERMAL TREATMENT OF Ti6Al4V
Keywords: surface treatment|adhesionbioactivity|hydroxyapatite|
No 1 (2011), p. 11-17
  mag02.pdf (528 kB)
mag02_eng.txt (844 B)  

L. Bubenko, R. Konečná, L. Kunz, G. Nicoletto
FATIGUE CRACK PROPAGATION WITHIN THE AUSTEMPERED DUCTILE IRON MICROSTRUCTURE
Keywords: casting|austempering|fatigue test|fracture|microstructure|
No 1 (2011), p. 18-25
  mag03.pdf (419 kB)
mag03_eng.txt (687 B)  

M. Špáková, P. Raschman, A. Fedoročková
EFFECT OF TEMPERATURE ON THE SELECTIVITY OF LEACHING OF HIGH-CALCIUM DEAD-BURNED MAGNESITE USING HYDROCHLORIC ACID
Abstract
Leaching of particulate dead-burned magnesite with 0.5 M and 2.8 M hydrochloric acid was investigated with special regard to the effect of temperature (from 30°C to 60°C) on the rate of chemical dissolution of magnesium, calcium and iron. The leaching process was found to be selective at a given temperature, but no significant effect of temperature on the selectivity was observed. Maximum selectivity was reached in the initial stage of leaching and the differences in dissolution rates decreased with increase in fraction of dead-burned magnesite reacted. The difference between the “initial” fractions of the iron dissolved in diluted and concentrated hydrochloric acid is probably caused by much faster (“step-wise”) dissolution of the iron in the initial stage of leaching of dead-burned magnesite using 2.8 M hydrochloric acid solution.

Keywords: oxides|yield phenomena|magnesium|calcium|iron|chemical dissolution|
No 1 (2011), p. 32-38
  mag05.pdf (82 kB)
mag05_eng.txt (858 B)  

J. Belan
INFLUENCE OF COOLING RATE ON  MORPHOLOGY IN CAST Ni – BASE SUPERALLOY
Keywords: nickel alloy|carbides and - phase metallographic evaluation|annealing|cooling rate influence|
No 1 (2011), p. 38-44
  mag06.pdf (359 kB)
mag06_eng.txt (1 kB)  

A. Vaško
INFLUENCE OF TRANSFORMATION TEMPERATURE ON STRUCTURE AND MECHANICAL PROPERTIES OF AUSTEMPERED DUCTILE IRON
Keywords: ADI|isothermal heat treatment|transformation temperature|
No 1 (2011), p. 45-50
  mag07.pdf (673 kB)
mag07_eng.txt (767 B)  

B. Buľko, J. Kijac, P. Demeter, J. Demeter
INFLUENCE OF MISALIGNMENT LADLE SHROUD ON TUNDISH RESIDENCE TIME
Keywords: tundish|continuous casting|water model|ladle shroud|
No 1 (2011), p. 51-57
  mag08.pdf (260 kB)
mag08_eng.txt (663 B)  

M. Mihaliková, M. Német
THE HARDNESS HV1 ANALYSIS OF AUTOMOTIVE STEELS SHEETS AFTER A PLASTIC DEFORMATION
Keywords:
No 1 (2011), p. 26-31
  mag04.pdf (392 kB)
mag04_eng.txt (800 B)