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The use of polymeric milling media in the reduction of contamination during mechanical attrition

  • Claudio L. De Castro (a1) and Brian S. Mitchell (a2)

Abstract

Aluminum samples were milled in a high-energy ball mill at times ranging from 10 to 500 min in stainless vial/media and nylon vial/media. The crystallite size of aluminum milled in the stainless steel setup reached a plateau at 25 nm around 100 min, whereas the crystallite size of aluminum milled in the nylon setup reached the same plateau at 500 min. Contamination studies were conducted using x-ray fluorescence, hydrogen–carbon–nitrogen analysis, and thermogravimetric analysis. Although organic contamination due to the nylon milling media was high at 12 wt% when milled for 500 min, it is shown that the contaminant could be easily removed by thermal treatment.

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References

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1.Castro, C.L. De and Mitchell, B.S., in Synthesis, Functionalization and Surface Treatment of Nanoparticles, edited by Baraton, M.I. (American Scientific Publishers, Los Angeles, CA, 2002), p. 1.
2.Koch, C.C., Nanostruct. Mater. 2, 109129 (1993).
3.Kuhn, E., in Powder Metallurgy (ASM, Materials Park, OH, 1984), p. 5670.
4.Kim, Y.D., Chung, J.Y., Kim, J., and Jeon, H., Mater. Sci. Eng. A 291, 17 (2002).

The use of polymeric milling media in the reduction of contamination during mechanical attrition

  • Claudio L. De Castro (a1) and Brian S. Mitchell (a2)

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