Effects of Fe-Ni alloy nanoparticles on the mechanical properties and microstructures of Al2O3/Fe-Ni nanocomposites prepared by rapid sintering
- Authors
- Lee, Young-In; Lee, Jun-Tae; Choa, Yong-Ho
- Issue Date
- Jul-2012
- Publisher
- Pergamon Press Ltd.
- Keywords
- Nanocomposite; Mechanical properties; High frequency induction heated sintering (HFIHS); Fe-Ni dispersion particle; FeAl2O3 spinel; Microstructure
- Citation
- Ceramics International, v.38, no.5, pp.4305 - 4312
- Indexed
- SCIE
SCOPUS
- Journal Title
- Ceramics International
- Volume
- 38
- Number
- 5
- Start Page
- 4305
- End Page
- 4312
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/32264
- DOI
- 10.1016/j.ceramint.2012.02.011
- ISSN
- 0272-8842
- Abstract
- A high frequency induction heated sintering (HFIHS) process was applied to fabricate dense Al2O3 reinforced with Fe-Ni magnetic metal dispersion particles. The process is based on the reduction of metal oxide particles immediately prior to sintering. The synthesized Al2O3/Fe-Ni nanocomposite powders are formed directly from the selective reduction of metal oxide powders, including NiO and Fe2O3. A dense Al2O3/Fe-Ni nanocomposite was fabricated using the HFIHS method with an extremely high heating rate of 2000 degrees C/min. The phase identification of nanocomposite powders and sintered specimens was determined by X-ray diffraction. Three-point bending tests and Vickers hardness experiments were performed to investigate the mechanical properties of the Al2O3/Fe-Ni nanocomposites and the relationship between microstructure and mechanical properties was investigated using TEM and SEM supported with EDX. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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