A STUDY ON THE SYNTHESIS OF ULTRA-FINEIN SITUNi3Al–Al2O3/TiCCOMPOSITE POWDER

Dong-Woong Kim, Sung-Hyun Choi, Kyoung-Rok Do, Su-Gun Lim and In-Shup Ahn ()
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Dong-Woong Kim: School of Nano and Advanced Materials Engineering, I-Cube Center, K-MEM R&D Cluster, Gyeongsang National University, 900 Gazwa-Dong, Jinju 600-701, South Korea
Sung-Hyun Choi: School of Nano and Advanced Materials Engineering, I-Cube Center, K-MEM R&D Cluster, Gyeongsang National University, 900 Gazwa-Dong, Jinju 600-701, South Korea
Kyoung-Rok Do: School of Nano and Advanced Materials Engineering, I-Cube Center, K-MEM R&D Cluster, Gyeongsang National University, 900 Gazwa-Dong, Jinju 600-701, South Korea
Su-Gun Lim: School of Nano and Advanced Materials Engineering, I-Cube Center, K-MEM R&D Cluster, Gyeongsang National University, 900 Gazwa-Dong, Jinju 600-701, South Korea
In-Shup Ahn: School of Nano and Advanced Materials Engineering, I-Cube Center, K-MEM R&D Cluster, Gyeongsang National University, 900 Gazwa-Dong, Jinju 600-701, South Korea

Surface Review and Letters (SRL), 2010, vol. 17, issue 02, 195-200

Abstract: Titanium carbide (TiC) has a low density, relatively high thermal and electrical conductivity.TiCis also very stable, with a melting temperature of 3100°C and does not undergo phase transformations. These properties have attraction to apply cutting tool extensively. Recently, in order to improve the properties of cermet tool materials, most researches have been carried out on the development of new binder.Ni3Alintermetallic is an interesting material because it has a great advantage of application for some structural materials, especially at the high temperatures.Ni3Alhas low density, high strength and good corrosion resistance properties, which recommend them for the application of high temperature structural material. In this study, we had investigated the effects of mechanical alloying time and annealing temperature on theNi3Al–Al2O3/TiCphase formation. Raw powders to fabricateNi3Al–Al2O3/TiCcomposite powders wereNi,Al,TiH2and activated carbon. These powders were ball-milled in planetary milling jar in argon atmosphere. Ball-milled powders were annealed up to 1200°C inAr + 4%H2atmosphere. The mean particle size of 300 nm was obtained after 10 h ball-milling.Ni3Al–Al2O3/TiCcomposite powders were formed by annealing for 1 h over 1100°C.

Keywords: Cermet; titanium carbide; Ni3Al; powder milling; composite powder (search for similar items in EconPapers)
Date: 2010
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DOI: 10.1142/S0218625X10013746

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