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Sintering of Si3N4 with Li-exchanged zeolite additive

  • B. Matovic EMAIL logo , G. Rixecker , S. Boskovic und F. Aldinger
Veröffentlicht/Copyright: 21. Januar 2022
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Abstract

This paper deals with the densification and phase transformation of Si3N4 with additives of Li-exchanged zeolite during pressureless sintering at significantly reduced temperatures. Dilatometric shrinkage data show that the first liquid forms as low as 1080 °C. Upon sintering at 1500 °C the bulk density increases to more than 95% of the theoretical density without phase transformation from α-S3N4 to β-Si3N4, i. e. the phase transformation lags behind the densification process. Above 1500 °C the secondary phase is completely converted into a glass and the α-to-β transformation takes place. Under these conditions the grain growth is anisotropic, leading to a microstructure which has potential for enhanced fracture toughness. The results show that a very effective low-temperature sintering additive for silicon nitride can be obtained from Li-exchanged zeolite.


Dr. Branko Matovic, Vinca Institute for Nuclear Sciences, Lab. 170, P.O. Box 522, 11001 Belgrad, Serbia and Montenegro, Tel.: +11 2439 454, Fax: +11 2439 454
* Present address: Institute of Nuclear Sciences “Vinca”, Beograd
  1. The authors are grateful to the Max-Planck-Gesellschaft as well as to Ministry of Science and Environmetal Protection of Serbia for financial support.

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Received: 2004-11-02
Accepted: 2006-06-12
Published Online: 2022-01-21

© 2006 Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Contents
  2. Editorial
  3. Nanoindentation creep and stress relaxation tests of polycarbonate: Analysis of viscoelastic properties by different rheological models
  4. Investigation of SiO2 thin films on Si substrates for use as standards for laser-acoustic measuring devices
  5. Determination of the critical tensile stress of sapphire by spherical indentation with additional lateral forces
  6. The deformation behaviour of electrodeposited nanocrystalline Ni in an atomic force microscope with a newly developed in situ bending machine
  7. In situ electrochemical nanoindentation of a nickel (111) single crystal: hydrogen effect on pop-in behaviour
  8. Indentation behaviour of (011) thin films of III–V semiconductors: polarity effect differences between GaAs and InP
  9. Multiwall carbon nanotubes-based composites – mechanical characterization using the nanoindentation technique
  10. Nanoindentation studies of stamp materials for nanoimprint lithography
  11. Experimental and thermodynamic evaluation of the Co–Cr–C system
  12. Thermodynamics of high-temperature cuprous sulfide
  13. Sintering of Si3N4 with Li-exchanged zeolite additive
  14. Effect of LiYO2 addition on sintering behavior and indentation properties of silicon nitride ceramics
  15. Mechanism of quasi-viscous flow of zinc single crystals
  16. The absolute thermoelectric power of chromium, molybdenum, and tungsten
  17. Modelling of metal – mould interface resistance in the Al-11.5 wt.% Si alloy casting process
  18. Award/Preisverleihung
  19. Personal
  20. Conferences
  21. Contents
  22. Editorial
  23. Editorial
  24. Basic
  25. Nanoindentation creep and stress relaxation tests of polycarbonate: Analysis of viscoelastic properties by different rheological models
  26. Investigation of SiO2 thin films on Si substrates for use as standards for laser-acoustic measuring devices
  27. Determination of the critical tensile stress of sapphire by spherical indentation with additional lateral forces
  28. The deformation behaviour of electrodeposited nanocrystalline Ni in an atomic force microscope with a newly developed in situ bending machine
  29. In situ electrochemical nanoindentation of a nickel (111) single crystal: hydrogen effect on pop-in behaviour
  30. Indentation behaviour of (011) thin films of III–V semiconductors: polarity effect differences between GaAs and InP
  31. Multiwall carbon nanotubes-based composites – mechanical characterization using the nanoindentation technique
  32. Nanoindentation studies of stamp materials for nanoimprint lithography
  33. Experimental and thermodynamic evaluation of the Co–Cr–C system
  34. Applied
  35. Thermodynamics of high-temperature cuprous sulfide
  36. Sintering of Si3N4 with Li-exchanged zeolite additive
  37. Effect of LiYO2 addition on sintering behavior and indentation properties of silicon nitride ceramics
  38. Mechanism of quasi-viscous flow of zinc single crystals
  39. The absolute thermoelectric power of chromium, molybdenum, and tungsten
  40. Modelling of metal – mould interface resistance in the Al-11.5 wt.% Si alloy casting process
  41. Kösterpreis
  42. Award/Preisverleihung
  43. Notifications
  44. Personal
  45. Conferences
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