International Journal of Global Advanced Materials & Nanotechnology

2nd World Congress and Expo on Nanotechnology and Material Science April 04-06, 2016 at Dubai, UAE
Conference Proceedings

Oral Cubic Boron Nitride Reinforced Sialon Nano-Composites by Spark Plasma Sintering

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  • Abbas Saeed Hakeem,
  • Bilal Anjum Ahmed,
  • Akolade Idris Bakare,
  • brahim Ahmed Ibrahim Ali,
  • Muhammad Ehsan Ali,
  • Tahar Laoui
Abbas Saeed Hakeem
Center of Excellence in Nanotechnology, King Fahd University of Petroleum & Minerals
Bilal Anjum Ahmed
Mechanical Engineering Department, King Fahd University of Petroleum & Minerals
Akolade Idris Bakare
Center of Excellence in Nanotechnology, King Fahd University of Petroleum & Minerals
brahim Ahmed Ibrahim Ali
Center of Excellence in Nanotechnology, King Fahd University of Petroleum & Minerals
Muhammad Ehsan Ali
Center of Excellence in Nanotechnology, King Fahd University of Petroleum & Minerals
Tahar Laoui
Center of Excellence in Nanotechnology, King Fahd University of Petroleum & Minerals, Saudi Arabia and Mechanical Engineering Department, King Fahd University of Petroleum & Minerals, Saudi Arabia

Published 2018-01-01

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Abstract

Aluminosilicate oxynitride and cubic boron nitride (cBN) composites having excellent mechanical properties andchemical stability in room temperature to high temperature applications. In the present study, cubic boron nitride (cBN)reinforcedalpha-Sialonnano-composites were preparedusing spark plasma sintering (SPS) technique. The starting powdersincluding Sialon precursors and various particles size of cBN (10, 20 and 30 wt.%) were homogeneously mixed by probesonication before sintering. The effect of SPS processing parameters on the densification and mechanical behavior of thesenano-composites were investigated. These cBN enabled in the densificationsialon composite samples were analyzed for phaseidentification by X-ray diffraction. As well as, composite samples were evaluated to find cBN to hBN transformation in theSialon matrix sintered at 1500°C. Field emission scanning electron microscopy(FESEM) used for morphology and hardnessand fracture toughnesswere measured.

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