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1
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Phase Identification of Nanometric Precipitates in AlSi9Cu Alloy after Remelting by Laser Beam

100%
Pawlyta M., Labisz K., Matus K.
Acta Physica Polonica A
|
2016
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vol. 130
|
issue 4
827-829
EN
The aim of presented paper is an investigation of the structure changes in AlSi9Cu alloy after remelting by a laser beam. Scanning transmission electron microscopy was applied for structure characterization and precipitates phase identification. In the raw material, precipitates were larger and during remelting such precipitates were dissolved and very fast crystallization came next. Observed precipitates are generally uniform: in size, shape, and chemical composition. Generally, after remelting precipitates are not uniformly distributed in the whole sample but areas with dense, nanometric precipitates are common. Numerous volumes with elongated Ti precipitates, identified as Ti(Al_{1-x}Si_{x})₃, were found. Observed precipitate can strongly affect material properties (even in a case of law Ti concentration) because it may act as a crystal nucleus for other phases.
2
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Characterization of Nanometric-Sized Carbides Formed During Tempering of Carbide-Steel Cermets

100%
Pawlyta M., Matula G., Gołombek K., Matus K.
Archives of Metallurgy and Materials
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2016
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issue 2
3
Content available remote

Carbon Nanomaterials from Carbon Monoxide Using Nickel and Cobalt Catalysts

100%
Liszka B., Krztoń A., Pawlyta M.
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|
issue 3
471-474
EN
Two catalysts, nickel and cobalt, supported on MgO were used for carbon nanomaterials deposition by CO disproportionation. The syntheses were performed at 795 and 900 K in the hydrogen atmosphere. The resulting products were investigated using atomic force microscopy, scanning electron microscopy, and high-resolution transmission electron microscopy. Although in the literature carbon nanofibres are expected to form in the hydrogen presence, we obtained carbon nanotubes, which were multiwall and twisted with the outer diameter of 10-120 nm and the tube length up to 10 μm.
4
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Phase Identification of Nanometric Precipitates in Al-Si-Cu Aluminum Alloy by Hr-Stem Investigations

100%
Matus K., Pawlyta M., Labisz K.
Archives of Metallurgy and Materials
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2016
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issue 3
5
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Aluminium AlMg1SiCu Matrix Composite Materials Reinforced with Halloysite Particles

100%
Król M., Tomiczek B., Dobrzański L. A., Pawlyta M.
Archives of Metallurgy and Materials
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2014
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issue 1
6
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Effect Of Milling Time On Microstructure Of AA6061 Composites Fabricated Via Mechanical Alloying

100%
Tomiczek B., Dobrzański L. A., Pawlyta M., Adamiak M.
Archives of Metallurgy and Materials
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2015
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issue 2
7
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Microstructure evaluation of long-term aged binary Ag-Cu alloy

100%
Pawlyta M., Labisz K., Rdzawski Z.
Archives of Materials Science and Engineering
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2011
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vol. 49
8
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Microstructure evaluation of long-term aged binary Ag-Cu alloy

100%
Labisz K., Rdzawski Z., Pawlyta M.
Archives of Materials Science and Engineering
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2011
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issue 1
9
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Characterization of the structure features of CeZrO2 and Ni/CeZrO2 catalysts for tar gasification with steam

100%
Łamacz A., Pawlyta M., Dobrzański L. A., Krztoń A.
Archives of Materials Science and Engineering
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2011
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vol. 48
10
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Corrosion Characteristics of Composites of (Mo,Ti)C Tiand TiC/Ti Type Manufactured with SLM technique

89%
Figiel P., Biedunkiewicz A., Biedunkiewicz W., Grzesiak D., Pawlyta M., Figiel P., Biedunkiewicz A., Biedunkiewicz W., Grzesiak D., Pawlyta M.
Archives of Metallurgy and Materials
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2019
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vol. 64
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issue 4
11
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Influence of the Repetitive Corrugation on the Mechanism Occuring During Plastic Deformation of CuSn6 Alloy

88%
Pawlyta M., Nuckowski P. M., Kwaśny W., Rdzawski Z., Głuchowski W.
Archives of Metallurgy and Materials
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2016
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issue 3
12
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Melting of Grey Cast Iron Based on Steel Scrap Using Silicon Carbide

88%
Jezierski J., Pawlyta M., Szajnar J., Stojczew A., Janerka K.
Archives of Foundry Engineering
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2014
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issue 3
13
Content available remote

High Resolution TEM Investigations and TDA Analysis of Zinc Alloy with Strontium Addition

76%
Labisz K., Krupiński M., Pawlyta M., Matus K., Kremzer M., Dopierała K.
Acta Physica Polonica A
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2016
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vol. 130
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issue 4
823-826
EN
In this paper there are presented results of high resolution transmission electron microscope investigation concerning the structure of the Zn-Al-Si cast zinc alloy with Sr addition for crystal structure refinement after thermo-derivative analysis performed using the universal metallurgical simulator and analyzer platform. The thermo-derivative analysis allows to determine the specific points of the solidifying alloy, which is helpful for phase determination and proper heat treatment condition determination, allowing to reduce the energy costs and obtaining higher mechanical and functional properties. Using transmission electron microscopy, especially selected area diffraction method appliance it was possible to determine the phases occurring in the alloy in the state after chemical composition modification as well as after appliance of very precisely controlled cooling rate. The morphology and size of the microstructure of micro-sized eutectic was possible to determine as well the lattice parameters of the Zn α -phase. Particularly the overview will be also directed on the high resolution transmission electron microscope to achieve good insight into the structural changes on the atomic scale.
14
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Carbon Nanotubes Counter Electrode for Dye-Sensitized Solar Cells Application

76%
Drygała A., Dobrzański L. A., Pawlyta M., Szindler M., M P. v. P., Lukaszkowicz K.
Archives of Metallurgy and Materials
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2016
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issue 2
15
Content available remote

Synthesis and Characterization of Carbon Nanotubes Decorated with Gold Nanoparticles

76%
Dobrzanski L., Pawlyta M., Krzton A., Liszka B., Tai C., Kwasny W.
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issue 3
483-486
EN
In presented work we report results of simple and viable method for producing Au/CNT composites. Chemical composition and crystallographic structure of the Au/CNT composites was confirmed by X-ray diffraction measurements, while transmission and scanning electron microscopy were used to characterize the morphology of nanocrystals as well as the distribution of nanocrystals in the composite. The obtained particles with relatively small diameter (less than 9 nm) were found to be spatially well dispersed on the carbon nanotubes. The density of attached Au-nanoparticles is not sufficient, and cannot be improved by simple increasing gold loading.
16
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Changes in Structure of CuCr0.6 Alloy After Repetitive Corrugation Process

76%
Jung T., Matus K., Pawlyta M., Kwaśny W., Rdzawski Z., Głuchowski W., Szindler M.
Archives of Metallurgy and Materials
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2017
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vol. 62
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issue 4
17
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Towards cubic modification of Li7La3ZR2O12 compound by mechanical milling and annealing of powders

76%
Oleszak D., Kurowski B., Pikula T., Pawlyta M., Senna M., Suzuki H.
Archives of Metallurgy and Materials
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2019
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vol. 64
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issue 1
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