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Influence of Sand-Casting Parameters on Microstructure and Properties of Magnesium Alloys

100%
Jarosz R., Kiełbus A., Stopyra M.
Archives of Metallurgy and Materials
|
2013
|
issue 2
2
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Synthesis and Thermal Properties of Europium-Cerium Oxide as a New Fluorite-Type Ceramic Material for Thermal Barrier Coatings Applications

100%
Mikuśkiewicz M., Stopyra M., Moskal G.
Archives of Metallurgy and Materials
|
2018
|
vol. 63
|
issue 4
3
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Synthesis, Characterization and Thermal Diffusivity of Holmium and Praseodymium Zirconates

100%
Moskal G., Stopyra M., Niemiec D.
Archives of Metallurgy and Materials
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2016
|
issue 2
4
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Synthesis and Thermal Properties of Cerium-Dysprosium Oxide

100%
Moskal G., Mikuśkiewicz M., Stopyra M.
Archives of Metallurgy and Materials
|
2016
|
issue 2
5
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XRD Study of Eu₂O₃-ZrO₂ Feedstock Powders and Sintered Materials

100%
Jucha S., Moskal G., Mikuśkiewicz M., Stopyra M.
Acta Physica Polonica A
|
2016
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vol. 130
|
issue 4
866-868
EN
Presented article described synthesis process of nonstoichiometric europium zirconate by solid state reaction between weight-equal mixture of ZrO₂ and Eu₂O₃ feedstock powders. To final material synthesis high temperature vacuum press was used as well as a free standing process of sintering. As a result europium zirconates were obtained. X-ray diffraction characterization revealed that relatively homogeneous materials were synthesised but scanning electron microscopy analysis showed many areas with nonhomogeneous composition. On the base of X-ray diffraction patterns, characterization of crystallite size as well as a lattice strain were calculated. The Williamson-Hall, Halder-Wagner and Cauchy-Gauss methods were used to make the calculations. Obtained data showed that there was no significant differences between crystallite size with zirconate materials obtained by solid state reaction at temperature 1350°C in vacuum press and by free standing process. The short heating at higher temperature (1450°C/5 h) has no influence on crystallite size as well, but 24 h of additional heating strongly increases the crystallite size.
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