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Your search keyword '"M. Andrzejczuk"' showing total 2 results
Start Over Author "M. Andrzejczuk" Topic chemistry.chemical_compound
2 results on '"M. Andrzejczuk"'

1. Corrosion inhibition of carbon steel (K-55) in CO2-saturated 0.5 M KCl solution by polyacrylamide

Author

J. Mizera, M. Andrzejczuk, Gaetano Palumbo, and Jacek Banaś

Subjects
Materials science, Carbon steel, General Chemical Engineering, Inorganic chemistry, Polyacrylamide, Metals and Alloys, engineering.material, Surfaces, Coatings and Films, Corrosion, chemistry.chemical_compound, Corrosion inhibitor, chemistry, Chemical engineering, Materials Chemistry, engineering, Polarization (electrochemistry)
Published
2015
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2. Superplastic deformation of Si3N4 based nanocomposites reinforced by nanowhiskers

Author

M. Andrzejczuk, Mathias Herrmann, V. Varchenko, A. Polotai, Andrey Ragulya, O. B. Zgalat-Lozynskyy, and Publica

Subjects
nano-whiskers, wear, Materials science, Nanocomposite, Mechanical Engineering, superplasticity, SPS, Superplasticity, Deformation (meteorology), Atmospheric temperature range, Condensed Matter Physics, Nanocrystalline material, chemistry.chemical_compound, silicon nitride, Silicon nitride, chemistry, Mechanics of Materials, visual_art, Vickers hardness test, visual_art.visual_art_medium, nano-composites, General Materials Science, Ceramic, Composite material
Abstract

A superplastic deformation of pre-sintered Si3N4-based nanocrystalline ceramics and Si3N4 nano-whisker reinforced composites has been investigated. Superplastic deformation tests have been carried out in the temperature range from 1500 to 1600 °C under 56 kN compression in nitrogen. During the tests, all nano-composites exhibited high rates of deformation (1.6–5.4×10−3 s−1) corresponding to high activation energy in the range of 538–699 kJ/mol. The composites enhanced by Si3N4 nano-whiskers exhibited the formation of anisotropic microstructure with anisotropic mechanical properties. The highest Vickers hardness ~19 GPa and lowest coefficient of dry wear 0.39 was exhibited by the TiN–Si3N4 nano-composite.

Published
2014
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