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Opracowanie metodyki otrzymywania cienkich folii z nanomateriałów metalicznych

Gazdowicz J., Wojtas J.

Prace Instytutu Metalurgii Żelaza

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2005

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T. 57, nr 3

60-61

PL

W ramach pracy przeprowadzono próby doboru odczynnika i warunków temperaturowo-prądowych dla otrzymywania cienkich folii z nanomaterialów metalicznych. Opracowano uniwersalne odczynniki oraz dobrano warunki temperaturowo-prądowe dla otrzymywania cienkich folii z nanometalicznego aluminium i jego stopów, nanometalicznej miedzi i jej stopów oraz stopów niklu. Ponadto opanowano metodykę otrzymywania cienkich folii z nanometalicznej stali otrzymaną metodą Mechanical Alloying.

EN

As a part of the work, tests on selection of the reagent and temperature-current conditions for obtaining thin foils from metallic nanomaterials were carried out. Universal reagents were developed and temperature-current conditions for obtaining thin foils from nanometallic aluminium and its alloys, nanometallic copper and its alloys and nickel alloys were selected. In addition, methods for obtaining thin foils from nanometallic steel obtained by Mechanical Alloying method was mastered.

2

Formation of the Fe(Co,Ni)ZrB alloys by rapid quenching and mechanical alloying methods.

Grabias A., Kopcewicz M., Oleszak D., Latuch J.

Archives of Materials Science

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2004

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Vol. 25, nr 4

423-429

EN

The Fe(Co,Ni)ZrB systems have been prepared in the form of ribbons and powders by using the rapid quenching and mechanical alloying techniques, respectively. X-ray diffraction and Mössbauer spectroscopy measurements revealed that the melt-spun ribbons were fully amorphous. Significant differences in the structure of the powder samples depending on their preparation method were observed by Mössbauer spectroscopy. The powders obtained by high-energy ball milling of the ribbons remain amorphous while powders prepared from the crystalline elements form the bcc iron-based solid solutions.

3

Proszki kompozytowe FeAl-Al2O3 i NiAl-Al2O3 otrzymywane metodą mechanicznej syntezy

Oleszak D.

Kompozyty

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2001

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R. 1, nr 1

76-78

PL

Przedstawiono wyniki badań nad otrzymywaniem in situ proszków kompozytowych o osnowie w postaci uporządkowanej fazy międzymetalicznej FeAl lub NiAl, umacnianej Al2O3. Proces redukcji hematytu lub tlenku niklu za pomocą Al przeprowadzono poprzez mielenie w młynku kulowym odpowiednich mieszanin proszkowych. Scharakteryzowano powstałe fazy (wielkość krystalitów, parametr sieci). Uzyskany materiał charakteryzował się nanometrycznymi rozmiarami krystalitów.

EN

The milling processes were performed for starting powder mixtures of compositions Fe2O3+4AI and 3NiO+5Al in order to study the phase transformations leading to the in situ formation of composites 2FeAI+Al2O3 and 3NiAl+Al2O3. A Fritsch planetary ball mill was applied for the experiments. The reduction reaction of hematite took place after 20 h of processing, however, the reaction product, beside Al2O3, was not ordered FeAl intermetallic compound, but disordered bcc Fe(AI) solid solution, characterized by mean crystallites size of 10 nm and lattice parameter of 0.2931 nm. Heating the sample up to 700°C resulted in the ordering process and formation of FeAl. In the case of the reduction of NiO, NiAl intermetallic compound was formed directly during the milling, after 1.5 h of processing only. This phase was characterized by average crystallite size of 15 nm and lattice parameter of 0.2884 nm. Simultaneously, the crystallites of Al2O3 were considerably bigger (about 65 nm). Prolonged milling up to 40 h led to further refinement of the microstructure and decreasing of crystallites size of NiAl and Al2O3 down to 10 and 25 nm, respectively.