Fabrication of Al2O3/Ni-P nanocomposites with phase percolation by high pressure sintering of chemically coated alumina powders.

• Autorzy: Michalski J. , Wejrzanowski T. , Konopka K. , Bieliński J. , Gierlotka S. , Kurzydłowski K.J.
• Konferencja: 5th Polish-Japanese Symposium on Advanced Methods of Materials Characterization, Niedzica, 28.08-2.09.2004
• Języki publikacji: EN

Abstrakty

EN

The present paper shows the possibility of fabrication, under high pressure, of composites with percolated structure from alumina powder coated with nanoparticles of Ni-P to electroless nickel plating process. This process leads to either uniformly dispersed nanoparticles of Ni-P (size range of 10-100 nm) or thin nanometric layers covering the entire grain surface of the ceramic powder. By high pressure sintering one can obtain two types of nanocomposites from coated powders: (a) Al2O3/Ni-P particulate system and (b) ceramic metal percolated structure. Three kinds of composites with percolated structures were fabricated at different temperatures and investigated by SEM and TEM. The results were compared with model structures for percolated structures.

Słowa kluczowe

EN

nanocomposite material; high-pressure sintering; alumina powders; chemical coatings; phase percolation

PL

nanokompozyty; spiekanie wysokociśnieniowe; proszek aluminiowy; powlekanie chemiczne; filtrowanie fazowe

• Wydawca: Komitet Nauki o Materiałach PAN
• Czasopismo: Archives of Materials Science
• Rocznik: 2005
• Tom: Vol. 26, nr 1-2
• Strony: 53--58
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Michalski J.

• Faculty of Materials Science & Engineering, Warsaw University of Technology, Wołoska 141, 02-507 Warsaw, Poland

autor

Wejrzanowski T.

• Faculty of Materials Science & Engineering, Warsaw University of Technology, Wołoska 141, 02-507 Warsaw, Poland

autor

Konopka K.

• Faculty of Materials Science & Engineering, Warsaw University of Technology, Wołoska 141, 02-507 Warsaw, Poland

autor

Bieliński J.

• Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland

autor

Gierlotka S.

• High Pressure Research Center of Polish Academy od Science, Sokołowska 29, 01-142 Warsaw, Poland

autor

Kurzydłowski K.J.

• Faculty of Materials Science & Engineering, Warsaw University of Technology, Wołoska 141, 02-507 Warsaw, Poland

Bibliografia

• [1] K. Konopka, A. Olszowka-Myalska, M. Szafran, Materials Chemistry and Physics, 81, 329 (2003).
• [2] J. Miсha1ski, К. Кonорkа, М. Тгzaska, Acta Physica Polonica А, 102, 181 (2002).
• [3] J. Мiсhа1ski, К. Коnорkа, М. Тгzaska, Materials Chemistry and Physics, 81,407 (2003).
• [4] J.F. Сannon, J. Physical and Chemical Reference Data, 3, 781 (1974).
• [5] J. Michalski, К. Konopka, S. Gierlotka, K.J. Kurzydłowski, Solid State Phenomena, 101-102, 147 (2005).
• [6] J. Serra, Image analysis and mathematical morphology, Academic Press, London, (1982).