Ultrahigh-current-density metal-ion implantation and diamondlike-hydrocarbon films for tribological applications; Final report

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Description

The metal-ion-implantation system used to implant metals into substrates are described. The metal vapor required for operation is supplied by drawing sufficient electron current from the plasma discharge to an anode-potential crucible so a solid, pure metal placed in the crucible will be heated to the point of vaporization. The ion-producing, plasma discharge is initiated within a graphite-ion-source body, which operates at high temperature, by using an argon flow that is turned off once the metal vapor is present. Extraction of ion beams several cm in diameter at current densities ranging to several hundred {mu}A/cm{sup 2} on a target 50 ... continued below

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56 p.

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Wilbur, P. J. September 1993.

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  • Wilbur, P. J. Colorado State Univ., Fort Collins, CO (United States). Dept. of Mechanical Engineering

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Description

The metal-ion-implantation system used to implant metals into substrates are described. The metal vapor required for operation is supplied by drawing sufficient electron current from the plasma discharge to an anode-potential crucible so a solid, pure metal placed in the crucible will be heated to the point of vaporization. The ion-producing, plasma discharge is initiated within a graphite-ion-source body, which operates at high temperature, by using an argon flow that is turned off once the metal vapor is present. Extraction of ion beams several cm in diameter at current densities ranging to several hundred {mu}A/cm{sup 2} on a target 50 cm downstream of the ion source have been demonstrated using Mg, Ag, Cr, Cu, Si, Ti, V, B and Zr. These metals were implanted into over 100 substrates (discs, pins, flats, wires). A model describing thermal stresses induced in materials (e.g. ceramic plates) during high-current-density implantation is presented. Tribological and microstructural characteristics of iron and 304-stainless-steel samples implanted with Ti or B are examined. Diamondlike-hydrocarbon coatings were applied to steel surfaces and found to exhibit good tribological performance.

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56 p.

Notes

OSTI as DE94008958

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  • Other Information: PBD: Sep 1993

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  • Other: DE94008958
  • Report No.: ANL/OTM/CR--4
  • Grant Number: W-31109-ENG-38
  • DOI: 10.2172/143969 | External Link
  • Office of Scientific & Technical Information Report Number: 143969
  • Archival Resource Key: ark:/67531/metadc622879

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

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  • September 1993

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  • June 16, 2015, 7:43 a.m.

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  • Dec. 14, 2015, 12:22 p.m.

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Wilbur, P. J. Ultrahigh-current-density metal-ion implantation and diamondlike-hydrocarbon films for tribological applications; Final report, report, September 1993; Illinois. (digital.library.unt.edu/ark:/67531/metadc622879/: accessed December 14, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.