High temperature structural silicides

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Structural silicides have important high temperature applications in oxidizing and aggressive environments. Most prominent are MoSi{sub 2}-based materials, which are borderline ceramic-intermetallic compounds. MoSi{sub 2} single crystals exhibit macroscopic compressive ductility at temperatures below room temperature in some orientations. Polycrystalline MoSi{sub 2} possesses elevated temperature creep behavior which is highly sensitive to grain size. MoSi{sub 2}-Si{sub 3}N{sub 4} composites show an important combination of oxidation resistance, creep resistance, and low temperature fracture toughness. Current potential applications of MoSi{sub 2}-based materials include furnace heating elements, molten metal lances, industrial gas burners, aerospace turbine engine components, diesel engine glow plugs, and materials ... continued below

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17 p.

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Petrovic, J. J. March 1, 1997.

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Description

Structural silicides have important high temperature applications in oxidizing and aggressive environments. Most prominent are MoSi{sub 2}-based materials, which are borderline ceramic-intermetallic compounds. MoSi{sub 2} single crystals exhibit macroscopic compressive ductility at temperatures below room temperature in some orientations. Polycrystalline MoSi{sub 2} possesses elevated temperature creep behavior which is highly sensitive to grain size. MoSi{sub 2}-Si{sub 3}N{sub 4} composites show an important combination of oxidation resistance, creep resistance, and low temperature fracture toughness. Current potential applications of MoSi{sub 2}-based materials include furnace heating elements, molten metal lances, industrial gas burners, aerospace turbine engine components, diesel engine glow plugs, and materials for glass processing.

Physical Description

17 p.

Notes

INIS; OSTI as DE97003383

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  • 21. annual conference and expo on composites, advanced cermics, materials and structures, Cocoa Beach, FL (United States), 12-16 Jan 1997

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  • Other: DE97003383
  • Report No.: LA-UR--97-143
  • Report No.: CONF-970111--5
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 446373
  • Archival Resource Key: ark:/67531/metadc676464

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  • March 1, 1997

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

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  • Oct. 3, 2017, 12:54 p.m.

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Petrovic, J. J. High temperature structural silicides, article, March 1, 1997; New Mexico. (digital.library.unt.edu/ark:/67531/metadc676464/: accessed November 12, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.