Influence of Milling Time on the Homogeneity of the Al2O3/Ni Composite Powders Obtained by Mechanical Milling

Cristina Voicu; Florin Popa; Petru Pascuta; Ionel Chicinaş

doi:10.4028/www.scientific.net/SSP.216.146

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Influence of Milling Time on the Homogeneity of the Al₂O₃/Ni Composite Powders Obtained by Mechanical Milling

Abstract:

Al₂O₃/Ni nanocomposite powder was obtained by high-energy mechanical milling starting from a mixture of Al₂O₃ and Ni commercially powders. The Al₂O₃+15%vol. Ni mixture was homogenized for 15 minutes in the Turbula-type blender and then was milled in a planetary ball mill (Fritsch, Pulverisette 4) under argon atmosphere up to 120 min. Several milling times were used: 10, 30, 60, 90 and 120 minutes respectively. The evolution of the powders during milling and the stability of the composite phases were investigated by X-ray diffraction (XRD), optical microscopy (OM), scanning electron microscopy (SEM) and energy dispersive X-ray microanalysis (EDX). The SEM and OM images show a high level of homogenization of the Ni and Al₂O₃ phases for milling times larger than 90 minutes. The X-ray studies indicate no mixing between the two phases. The crystallite grain size is decreasing with the milling time.

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Periodical:

Solid State Phenomena (Volume 216)

Pages:

146-150

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.216.146

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Online since:

August 2014

Authors:

Cristina Voicu, Florin Popa, Petru Pascuta, Ionel Chicinaş*

Keywords:

Al₂O₃/Ni Composite Powder, Homogeneity, Mechanical Milling, Milling Time, X-Ray Diffraction (XRD)

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References

[1] C. Suryanarayana, Mechanical alloyng and milling, Progress in Materials Science, 46 (2001) 1-184.

Google Scholar

[2] J. Li, F. Li, K. Hu, Preparation of Ni/Al2O3 nanocomposite powder by high-energy ball milling and subsequent heat treatment, Journal of Materials Processing Technology, 147 (2004) 236–2.

DOI: 10.1016/j.jmatprotec.2003.12.022

Google Scholar

[3] W. H. Tuana, S. M. Liua, C. J. Hoa, C. S. Lina, T. J. Yangb, D. M. Zhangc, Z. Y. Fuc, J. K. Guo, Preparation of Al2O3–ZrO2–Ni nanocomposite by pulse electric current and pressureless sintering, Journal of the European Ceramic Society, 25 (2005).

DOI: 10.1016/j.jeurceramsoc.2004.07.001

Google Scholar

[4] D. G. Cho, S. K Yang, J. C. Yun, H. S. Kim, J. S. Lee, C. S. Lee, Effect of sintering profile on densification of nano-sized Ni/Al2O3 composite, Composites Part B: Engineering, 45 (2013) 159–164.

DOI: 10.1016/j.compositesb.2012.07.054

Google Scholar

[5] J. Zhang, R. Tu, Ta. Goto, Spark plasma sintering of Al2O3–Ni nanocomposites using Ni nanoparticles produced by rotary chemical vapour deposition, Journal of the European Ceramic Society, Available online 18 September (2013).

DOI: 10.1016/j.jeurceramsoc.2013.08.014

Google Scholar

[6] Luo Fa et al, Mechanical and dielectric properties of Ni/Al2O3 composites, Trans. Nonferrous Met. Soc. China, 17 (2007) 1140-1143.

Google Scholar