Cratering behavior in single- and poly-crystalline copper irradiated by an intense pulsed ion beam

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Description

When treated with intense pulsed ion beams (IPIB), many materials exhibit increased wear resistance, fatigue life, and hardness. However, this treatment often results in cratering and roughening of the surface. In this work, high purity single crystal and polycrystalline copper samples were irradiated with pulses from an IPIB to gain insight into the causes of this cratering behavior. Samples were treated with 1,2,5, and 10 shots at 2 J/cm{sup 2} and 5 J/cm{sup 2} average energy fluence per shot. Shots were about 400 ns in duration and consisted of a mixture of carbon, hydrogen, and oxygen ions at 300 keV. ... continued below

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8 p.

Creation Information

Wood, B.P.; Bitteker, L.J.; Waganaar, W.J. & Perry, A.J. December 31, 1998.

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Description

When treated with intense pulsed ion beams (IPIB), many materials exhibit increased wear resistance, fatigue life, and hardness. However, this treatment often results in cratering and roughening of the surface. In this work, high purity single crystal and polycrystalline copper samples were irradiated with pulses from an IPIB to gain insight into the causes of this cratering behavior. Samples were treated with 1,2,5, and 10 shots at 2 J/cm{sup 2} and 5 J/cm{sup 2} average energy fluence per shot. Shots were about 400 ns in duration and consisted of a mixture of carbon, hydrogen, and oxygen ions at 300 keV. It was found that the single crystal copper cratered far less than the polycrystalline copper at the lower energy fluence. At the higher energy fluence, cratering was replaced by other forms of surface damage, and the single crystal copper sustained less damage at all but the largest number of shots. Molten debris from the Lucite anode (the ion source) was removed and redeposited on the samples with each shot.

Physical Description

8 p.

Notes

INIS; OSTI as DE99000697

Source

  • 25. international conference on metallurgical coatings and thin films (ICMCTF-25), San Diego, CA (United States), 27 Apr - 1 May 1998

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  • Other: DE99000697
  • Report No.: LA-UR--98-1794
  • Report No.: CONF-980491--
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/304112 | External Link
  • Office of Scientific & Technical Information Report Number: 304112
  • Archival Resource Key: ark:/67531/metadc677118

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • December 31, 1998

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • May 5, 2016, 6:24 p.m.

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Wood, B.P.; Bitteker, L.J.; Waganaar, W.J. & Perry, A.J. Cratering behavior in single- and poly-crystalline copper irradiated by an intense pulsed ion beam, report, December 31, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc677118/: accessed December 14, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.