Influence of the control atmosphere and milling time on the morphology and microstructure of pure copper and copper-2.5 % lithium powders produced by mechanical alloying

Authors

  • P. A. Rojas Instituto de Física, Pontificia Universidad Católica de Valparaíso
  • M. P. Álvarez Departamento de Ingeniería Mecánica, Universidad de Chile
  • A. Peñaloza Departamento de Ingeniería Mecánica, Universidad de Chile
  • A. Zúñiga Departamento de Ingeniería Metalúrgica, Universidad de Santiago de Chile
  • S. Ordoñez Departamento de Ingeniería Metalúrgica, Universidad de Santiago de Chile

DOI:

https://doi.org/10.3989/revmetalm.0762

Keywords:

Mechanical alloying, Copper-lithium alloys, Supersaturated alloys, powder metallurgy, X-ray diffraction

Abstract


In the present work was investigated the effect of two milling parameters, atmosphere and milling time, on the morphology and microstructure of pure copper powder and a mixture of copper-2,5 wt. % lithium. The mechanical alloying was performed in a SPEX 8000D mill, using steel containers and balls. The two control atmospheres were argon and nitrogen and the milling time was varied from 3 up to 30 hours. The microstructural changes and the phases after milling were analyzed using scanning microscopy and X ray diffraction, whereas the amount of iron was measured by atomic absorption spectroscopy and the amount of oxygen by infrared spectroscopy. The results show the effect of the milling parameters studied on the microstructure as well as on the chemical composition of the samples.

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Author Biography

P. A. Rojas, Instituto de Física, Pontificia Universidad Católica de Valparaíso

Escuela de Ingeniería Mecánica, Pontificia Universidad Católica de Valparaíso

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Published

2009-06-30

How to Cite

Rojas, P. A., Álvarez, M. P., Peñaloza, A., Zúñiga, A., & Ordoñez, S. (2009). Influence of the control atmosphere and milling time on the morphology and microstructure of pure copper and copper-2.5 % lithium powders produced by mechanical alloying. Revista De Metalurgia, 45(3), 165–173. https://doi.org/10.3989/revmetalm.0762

Issue

Vol. 45 No. 3 (2009)

Section

Articles

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