Properties and rapid low-temperature consolidation of nanocrystalline Fe-ZrO2 composite by pulsed current activated sintering
- Properties and rapid low-temperature consolidation of nanocrystalline Fe-ZrO2 composite by pulsed current activated sintering
- 강현수; 고인용; 윤진국; 도정만; 홍경태; 손인진
- Mechanical alloying; composites; nanostructured material; mechanical properties
- Issue Date
- Metals and Materials International
- VOL 17, NO 1, 57-62
- Nanopowders of Fe and ZrO2 were synthesized from Fe2O3 and Zr by high-energy ball milling. The powder sizes of Fe and ZrO2 were 70 nm and 12 nm, respectively. Highly dense nanostructured 4/3Fe-ZrO2 composite was consolidated by a pulsed current activated sintering method within 1 minute from the mechanically synthesized powders (Fe-ZrO2) and horizontal milled Fe2O3+Zr powders under the 1 GPa pressure. The grain sizes of Fe and ZrO2 in the composite were calculated. The average hardness and fracture toughness values of nanostuctured 4/3Fe-ZrO2 composite were investigated.
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