NANOCRYSTALLINE GROWTH AND GRAIN-SIZE EFFECTS IN AU-CU ELECTRODEPOSITS

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The processing-structure-property relationship is investigated for electrodeposited foils of the gold-copper alloy system. A model is presented that relates the deposition process parameters to the nanocrystalline grain size. An activation energy of 1.52 eV {center_dot} atom{sup -1} for growth is determined for a long pulse (>10 msec) mode, and is 0.16 eV {center_dot} atom{sup -1} for short pulses (<5 msec). The affect of nanocrystalline grain size on the mechanical properties is assessed using indentation measurements. A Hall-Petch type variation of the Vickers microhardness with nanocrystalline grain size (>6 nm) is observed for Au-Cu samples with 1-12 wt.% Cu as tested ... continued below

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Jankowski, A F; Saw, C K; Harper, J F; Vallier, R F; Ferreira, J L & Hayes, J P February 25, 2005.

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The processing-structure-property relationship is investigated for electrodeposited foils of the gold-copper alloy system. A model is presented that relates the deposition process parameters to the nanocrystalline grain size. An activation energy of 1.52 eV {center_dot} atom{sup -1} for growth is determined for a long pulse (>10 msec) mode, and is 0.16 eV {center_dot} atom{sup -1} for short pulses (<5 msec). The affect of nanocrystalline grain size on the mechanical properties is assessed using indentation measurements. A Hall-Petch type variation of the Vickers microhardness with nanocrystalline grain size (>6 nm) is observed for Au-Cu samples with 1-12 wt.% Cu as tested in cross-section. The hardness increases three-fold from a rule-of-mixtures value <1 GPa to a maximum of 2.9 GPa.

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PDF-file: 19 pages; size: 0.5 Mbytes

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  • Journal Name: Thin Solid Films; Journal Volume: 494; Journal Issue: 2006

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  • Report No.: UCRL-JRNL-210132
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 875964
  • Archival Resource Key: ark:/67531/metadc874065

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  • February 25, 2005

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  • Sept. 21, 2016, 2:29 a.m.

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  • Dec. 6, 2016, 1:45 p.m.

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Jankowski, A F; Saw, C K; Harper, J F; Vallier, R F; Ferreira, J L & Hayes, J P. NANOCRYSTALLINE GROWTH AND GRAIN-SIZE EFFECTS IN AU-CU ELECTRODEPOSITS, article, February 25, 2005; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc874065/: accessed December 14, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.