Novel joining of dissimilar ceramics in the Si{sub 3}N{sub 4}-Al{sub 2}O{sub 3} system using polytypoid functional gradients Metadata

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Title

  • Main Title Novel joining of dissimilar ceramics in the Si{sub 3}N{sub 4}-Al{sub 2}O{sub 3} system using polytypoid functional gradients

Creator

  • Author: Lee, Caroline S.
    Creator Type: Personal
  • Author: Zhang, Xiao Feng
    Creator Type: Personal
  • Author: Thomas, Gareth
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy. Division of Materials Sciences.
    Contributor Type: Organization
    Contributor Info: USDOE Director, Office of Science. Office of Basic Energy Studies. Division of Materials Sciences (United States)

Publisher

  • Name: Lawrence Berkeley National Laboratory
    Place of Publication: Berkeley, California
    Additional Info: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (United States)

Date

  • Creation: 2001-05-01

Language

  • English

Description

  • Content Description: A unique approach to crack-free joining of heterogeneous ceramics is demonstrated by the use of sialon polytypoids as Functionally Graded Materials (FGM) as defined by the phase diagram in the system, Si3N4-Al2O3. Polytypoids in the Al2O3-Si3N4 system offer a path to compatibility for heterogeneous ceramics. This paper describes successful hot press sintering of multilayered FGM's with 20 layers of thickness 500 mm each. Transmission Electron Microscopy was used to identify the polytypoids at the interfaces of different areas of the joint. It has been found that the 15R polytypoid was formed in the Al2O3-contained layers and the 12H polytypoid was formed in the Si3N4-contained layers.
  • Physical Description: vp.

Subject

  • Keyword: Hot Pressing Functionally Graded Materials (Fgm) Sialon Polytypoids Si3N4 Al2O3 And High-Resolution Electron Microscopy
  • Keyword: Silicon Nitrides
  • Keyword: Phase Diagrams
  • STI Subject Categories: 36 Materials Science
  • Keyword: Joining
  • Keyword: Functionally Graded Materials (Fgm) Sialon Polytypoids Si3N4 Al2O3 And High-Resolution Electron Microscopy
  • Keyword: Ceramics
  • Keyword: Aluminium Oxides
  • Keyword: Sintering
  • Keyword: Compatibility

Source

  • Journal Name: Acta Materialia; Journal Volume: 49; Journal Issue: 18; Other Information: Journal Publication Date: October 26, 2001

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

  • Report No.: LBNL--47816
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 789155
  • Archival Resource Key: ark:/67531/metadc723568
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