The structure, properties and performance of plasma-sprayed beryllium for fusion applications

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Plasma-spray technology is under investigation as a method for producing high thermal conductivity beryllium coatings for use in magnetic fusion applications. Recent investigations have focused on optimizing the plasma-spray process for depositing beryllium coatings on damaged beryllium surfaces. Of particular interest has been optimizing the processing parameters to maximize the through-thickness thermal conductivity of the beryllium coatings. Experimental results will be reported on the use of secondary H{sub 2} gas additions to improve the melting of the beryllium powder and transferred-arc cleaning to improve the bonding between the beryllium coatings and the underlying surface. Information will also be presented on ... continued below

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15 p.

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Castro, R.G.; Stanek, P.W. & Elliott, K.E. September 1, 1995.

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Description

Plasma-spray technology is under investigation as a method for producing high thermal conductivity beryllium coatings for use in magnetic fusion applications. Recent investigations have focused on optimizing the plasma-spray process for depositing beryllium coatings on damaged beryllium surfaces. Of particular interest has been optimizing the processing parameters to maximize the through-thickness thermal conductivity of the beryllium coatings. Experimental results will be reported on the use of secondary H{sub 2} gas additions to improve the melting of the beryllium powder and transferred-arc cleaning to improve the bonding between the beryllium coatings and the underlying surface. Information will also be presented on thermal fatigue tests which were done on beryllium coated ISX-B beryllium limiter tiles using 10 sec cycle times with 60 sec cooldowns and an International Thermonuclear Experimental Reactor (ITER) relevant divertor heat flux slightly in excess of 5 MW/m{sup 2}.

Physical Description

15 p.

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INIS; OSTI as DE96000066

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  • 2. International Energy Agency (IEA) workshop on beryllium technology for fusion, Jackson, WY (United States), 6-8 Sep 1995

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  • Other: DE96000066
  • Report No.: LA-UR--95-3046
  • Report No.: CONF-9509218--1
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 110728
  • Archival Resource Key: ark:/67531/metadc623338

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Office of Scientific & Technical Information Technical Reports

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  • September 1, 1995

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  • June 16, 2015, 7:43 a.m.

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  • Feb. 29, 2016, 7:41 p.m.

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Castro, R.G.; Stanek, P.W. & Elliott, K.E. The structure, properties and performance of plasma-sprayed beryllium for fusion applications, article, September 1, 1995; New Mexico. (digital.library.unt.edu/ark:/67531/metadc623338/: accessed December 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.