Laser-produced plasma measurement of thermal diffusivity of molten metals Metadata

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Title

  • Main Title Laser-produced plasma measurement of thermal diffusivity of molten metals

Creator

  • Author: Kim, Yong W.
    Creator Type: Personal
  • Author: Park, C. S.
    Creator Type: Personal
    Creator Info: Lehigh Univ., Bethlehem, PA (United States)

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization
    Contributor Info: USDOE, Washington, DC (United States)

Publisher

  • Name: Lockheed Idaho Technologies Company
    Place of Publication: Idaho Falls, Idaho
    Additional Info: Lockheed Idaho Technologies Co., Idaho Falls, ID (United States)

Date

  • Creation: 1995-12

Language

  • English

Description

  • Content Description: We have shown that a laser-produced plasma plume which is representative in composition of the condensed phase target can be reproducibly generated if the movement of the surface due to evaporation is kept in pace with the thermal diffusion front propagating into the bulk. The resulting mass loss is then strongly controlled by the thermal diffusivity of the target matter, and this relationship has been exploited to measure the thermal diffusivity of metallic alloys. We have developed a novel RF levitator-heater as a contamination-free molten metal source to be used as a target for LPP plume generation. In order to determine the mass loss due to LPP excitation, a new high sensitivity transducer has been constructed for measurement of the resulting impulse imparted on the specimen. The impulse transducer is built onto the specimen holder within the levitation-assisted molten metal source. The LPP method has been fully excercised for measurement of the thermal diffusivity of a molten specimen relative to the value for its room temperature solid. The results for SS304 and SS316 are presented together with a critique of the results. A numerical modeling of specimen heating in the molten metal source and the physical basis of the new hod are also presented.
  • Physical Description: 18 p.

Subject

  • Keyword: Laser Targets
  • Keyword: Alloys
  • Keyword: Stainless Steel-316
  • STI Subject Categories: 36 Materials Science
  • Keyword: Thermal Diffusivity
  • Keyword: Stainless Steel-304
  • Keyword: Laser-Produced Plasma
  • STI Subject Categories: 66 Physics
  • Keyword: Metals

Source

  • Conference: 4. international workshop on subsecond thermophysics, Cologne (Germany), 27-29 Jun 1995

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Other: DE96002535
  • Report No.: INEL--95/00448
  • Report No.: CONF-9506106--1
  • Grant Number: AC07-94ID13223
  • Office of Scientific & Technical Information Report Number: 146784
  • Archival Resource Key: ark:/67531/metadc624818

Note

  • Display Note: OSTI as DE96002535
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