NANO-CRYSTALLINE STATE OF FECO50 OBTAINED IN A PLANETARY BALL MILL

Paul BERE, George ARGHIR, Ioan PETEAN, Cristian SUCIU

Abstract


The necessities of high energy milling systems leads to the development of the planetary ball mills. It was considered a planetary mechanism for a planetary ball mill suitable for metallic powder milling.  A prototype was tested intensively on a FeCo50 % wt. at several milling time in order to evidence the designed planetary ball mill efficiency. The X-ray diffraction pattern reveals that after 16 hours of milling the nano-crystalline state was achieved. The FeCo50% wt mechanical alloying process is realized according with the ductile- brittle alloying model.

Key words: planetary system, ball mill, metallic powders

Full Text:

PDF

References


Suryanarayana, C., Mechanical alloying and milling, Progress in Materials Science, 46, Elsevier Science, 2001, p. 1-184

Bhaduri, A., Microstructural changes of elemental powders during mechanical alloying., PM.94 World Congress, Paris 1994, p.1329-1332

Bakker, H., Di L.M., Atomic disorder and phase transition in intermetallic compounds by high energy ball milling, Material Science Forum, no. 88 – 90, 1992, p. 27 - 34

Chattopadhyay P.P., Manna I., Talapatra S., Pabi S. K., A mathematical analysis of milling mechanics in a planetary ball mill, Materials Chemistry and Physics, 68, 2001

Zbiral J., Jangg G., Korb G., Mechanical alloying: development of microstructure and alloying mechanisms, Materials Science Forum, Vols.88 – 90, 1992

Sorescu M., Grabias A., Structural and magnetic proprieties of Fe50Co50 system, Intermetallics, 10, 2002

Antal, A., Elemente privind proiectarea angrenajelor, Ed. Todesco, Cluj – Napoca, 2000

Jula, A., Proiectarea angrenajelor evolventice, Scrisul Românesc, Craiova, 1989

Creţu, A., Rezistenţa materialelor. Ed, Ut Press, Cluj Napoca,1993

Chişiu, A., Organe de maşini, Ed. Didactica si Pedagogica, Bucuresti,1981

Arghir G., Caracterizarea cristalografică a metalelor şi aliajelor prin difracţie cu raze X, Litografia UTC – N, 1993

Meier M., Measuring crystallite size using X-ray diffraction, the Williamson-Hall technique, University of California, Davis, USA, 2005

Petean I., Arghir G., Daian I.G., Brandusan L., Nano quantitative metallography investigation on the mechanical alloyed Fe5Co95 composition, Powder Metallurgy Progress, Vol.7, no. 4, 2007, p. 230 – 238

Petean I., Arghir G., Daian I.G., SEM and AFM comparative study on mechanical alloyed Fe20Co80 powder, Acta Tehnica Napocensis, Machines Construction & Materials, No 50, 2007, p. 145-150


Refbacks

  • There are currently no refbacks.


JOURNAL INDEXED IN :