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Year 1998 No 3

Ballóková B., Rudnayová E., Kohútek I., Dusza J.
MICROSTRUCTURE PARAMETERS DETERMINATion OF SoME PROGRESSIVE MATERIALS
Abstract
The main microstructure parameters, namely the volume fraction of the secondary phase, the aspect ratio of whiskers and the mean grain size of matrix measured on three types of structural materials: Si3N4 + SiC whisker, MoSi2 and C/C composite are determined in the paper. Standard methods of quantitative microstructure analysis were used and their results were compared with those achieved by help of image analysis made on DIPS 4.0.
Microstructure parameters estimated by automatical image analysis had usually lower values than those achieved by manual methods. It is caused by an inadequate etching of same grain boundaries and by a small contrast between the measured particles and the matrix. In the case of estimation of the aspect ratio of whiskers on the image analysator DIPS 4.0 the difference can be caused by the fact that if calculating on DIPS the main and small radius of Legendre ellipse is taken into account and at the manual estimation the maximum and minimum size of the measured alements.

Keywords:
No 3 (1998), p. 179-185
mag01_eng.txt (1 kB)  

Bobrová E., Kováč L., Besterci M., Kieback B.
INFLUENCE OF TEST TEMPERATURE ON FRACTURE OF TIALCRNB ALLOY
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No 3 (1998), p. 186-193
  mag02.pdf (152 kB)
mag02_eng.txt (1 kB)  

Fröhlich L., Reitznerová E.
DISSOLUTION OF TIN FROM FE - SN MUD ORIGINATING FROM PRECIPITATION CLEANING OF TECHNOLOGICAL WASTE WATER
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No 3 (1998), p. 194-200
  mag03.pdf (155 kB)
mag03_eng.txt (3 kB)  

Flórián K., Dressler B., Surová E.
THE POSSIBILITIES OF APPLICATION OF ATOMIC ABSORPTION SPECTROMETRY WITH ELECTROTHERMAL ATOMIZATION IN DIRECT ANALYSIS OF SOLID SAMPLES (SS-ETA-AAS)
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No 3 (1998), p. 201-210
  mag04.pdf (213 kB)
mag04_eng.txt (2 kB)  

Mikloš V.
EXPERIMENTAL VERIFICATION OF THE INFLUENCE OF ARBITRARY VARIABLES ON COBALT RECOVERY FROM LATERITE ORE INTO AMMONIA SOLUTION
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No 3 (1998), p. 211-219
  mag05.pdf (175 kB)
mag05_eng.txt (3 kB)  

Harvanová J., Skoršepa M.
LIQUID EXTRACTION OF SILVER FROM THIOUREA SOLUTIONS
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No 3 (1998), p. 220-224
  mag06.pdf (135 kB)
mag06_eng.txt (2 kB)  

Tošenovský J.
A MULTIVARIATE INDEX AND LOSS FUNCTION
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No 3 (1998), p. 225-231
  mag07.pdf (199 kB)
mag07_eng.txt (535 B)  

Mayer P.
CORROSION EVALUATION METHODS FOR POWER TRANSMISSION LINES
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No 3 (1998), p. 232-239
  mag08.pdf (120 kB)
mag08_eng.txt (501 B)  

Klenovčanová A., Imriš I.
POSSIBILITIES OF CRUDE SELENIUM REFINING
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No 3 (1998), p. 240-247
  mag09.pdf (168 kB)
mag09_eng.txt (996 B)  

Lukáč I.
STRATEGY OF THE DEVELOPMENT ALUMINIUM DIE CASTING ALLOYS, CONCEPTION OF THE VALUATION THEIR PROPERTIES
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No 3 (1998), p. 248-257
mag10_eng.txt (785 B)  

Trpčevská J., Briančin J., Medvecký Ľ.
QUANTITATIVE MICROSCOPY AND IMAGE ANALYSIS ON IMR SAS
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No 3 (1998), p. 258-264
  mag11.pdf (145 kB)
mag11_eng.txt (1 kB)