Acta Metallurgica Sinica (English Letters) ›› 1990, Vol. 3 ›› Issue (11): 360-363.

• Research paper • Previous Articles     Next Articles

PREPARATION OF ULTRAFINE POWDER OF Fe AND ZrO_2 WITH METASTABLE PHASES BY HIGH POWER LASER BEAMS

XU Huibin TAN Shusong Technische Universitat Berlin,FRG XU Huibin Dipl.-Ing,FB9,Physikalische Ingenieurwissenschaft,HF1,TU Berlin,1000 Berlin 12,FRG   

  • Received:1990-11-11 Revised:1990-11-11 Online:1990-11-11 Published:2009-10-10

Abstract: The radiation of material surface by high intensity laser beams is used to produce the uhrafine powder of pure Fe and ZrO_2.The morphology,size and phases of the powder were examined by X-ray diffraetometer,scanning electron microscopy as well as transmission electron microscopy.In pure Fe a considerable quantity of γ-phase was found in the powder.In ZrO_2 powder,instead of stable phase,two metastable phases appeared.

Key words: laser beam, ultrafine powder, metastable phase