- Fabrication of Fe-TiC Composite Powder by High-Energy Milling and Subsequent Reaction Synthesis
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Ki-Bong Ahn, Byung-Hun Lee, Young-Hee Lee, Hyunh Xuan Khoa, Ji-Soon Kim
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J Powder Mater. 2013;20(1):53-59.
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DOI: https://doi.org/10.4150/KPMI.2013.20.1.053
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- Fe-TiC composite powder was fabricated via two steps. The first step was a high-energy milling of FeO and carbon powders followed by heat treatment for reduction to obtain a (Fe+C) powder mixture. The optimal condition for high-energy milling was 500 rpm for 1h, which had been determined by a series of preliminary experiment. Reduction heat-treatment was carried out at 900°C for 1h in flowing argon gas atmosphere. Reduced powder mixture was investigated by X-ray Diffraction (XRD), Field Emission-Scanning Electron Microscopy (FE-SEM) and Laser Particle Size Analyser (LPSA). The second step was a high-energy milling of (Fe+C) powder mixture and additional TiH_2 powder, and subsequent in-situ synthesis of TiC particulate in Fe matrix through a reaction of carbon and Ti. High-energy milling was carried out at 500 rpm for 1 h. Heat treatment for reaction synthesis was carried out at 1000sim1200°C for 1 h in flowing argon gas atmosphere. X-ray diffraction (XRD) results of the fabricated Fe-TiC composite powder showed that only TiC and Fe phases exist. Results from FE-SEM observation and Energy-Dispersive X-ray Spectros-copy (EDS) revealed that TiC phase exists uniformly dispersed in the Fe matrix in a form of particulate with a size of submicron.
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Citations
Citations to this article as recorded by  - Plastic deformation and microstructural evolution during the shock consolidation of ultrafine copper powders
Dong-Hyun Ahn, Wooyeol Kim, Minju Kang, Lee Ju Park, Sunghak Lee, Hyoung Seop Kim
Materials Science and Engineering: A.2015; 625: 230. CrossRef - Spark Plasma Sintering of Fe-TiC Composite Powders
Yong-Heui Lee, Xuan-Khoa Hyunh, Ji Soon Kim
Journal of Korean Powder Metallurgy Institute.2014; 21(5): 382. CrossRef
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