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.
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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© 2006 Carl Hanser Verlag, München
Artikel in diesem Heft
- Contents
- Editorial
- Nanoindentation creep and stress relaxation tests of polycarbonate: Analysis of viscoelastic properties by different rheological models
- Investigation of SiO2 thin films on Si substrates for use as standards for laser-acoustic measuring devices
- Determination of the critical tensile stress of sapphire by spherical indentation with additional lateral forces
- The deformation behaviour of electrodeposited nanocrystalline Ni in an atomic force microscope with a newly developed in situ bending machine
- In situ electrochemical nanoindentation of a nickel (111) single crystal: hydrogen effect on pop-in behaviour
- Indentation behaviour of (011) thin films of III–V semiconductors: polarity effect differences between GaAs and InP
- Multiwall carbon nanotubes-based composites – mechanical characterization using the nanoindentation technique
- Nanoindentation studies of stamp materials for nanoimprint lithography
- Experimental and thermodynamic evaluation of the Co–Cr–C system
- Thermodynamics of high-temperature cuprous sulfide
- Sintering of Si3N4 with Li-exchanged zeolite additive
- Effect of LiYO2 addition on sintering behavior and indentation properties of silicon nitride ceramics
- Mechanism of quasi-viscous flow of zinc single crystals
- The absolute thermoelectric power of chromium, molybdenum, and tungsten
- Modelling of metal – mould interface resistance in the Al-11.5 wt.% Si alloy casting process
- Award/Preisverleihung
- Personal
- Conferences
- Contents
- Editorial
- Editorial
- Basic
- Nanoindentation creep and stress relaxation tests of polycarbonate: Analysis of viscoelastic properties by different rheological models
- Investigation of SiO2 thin films on Si substrates for use as standards for laser-acoustic measuring devices
- Determination of the critical tensile stress of sapphire by spherical indentation with additional lateral forces
- The deformation behaviour of electrodeposited nanocrystalline Ni in an atomic force microscope with a newly developed in situ bending machine
- In situ electrochemical nanoindentation of a nickel (111) single crystal: hydrogen effect on pop-in behaviour
- Indentation behaviour of (011) thin films of III–V semiconductors: polarity effect differences between GaAs and InP
- Multiwall carbon nanotubes-based composites – mechanical characterization using the nanoindentation technique
- Nanoindentation studies of stamp materials for nanoimprint lithography
- Experimental and thermodynamic evaluation of the Co–Cr–C system
- Applied
- Thermodynamics of high-temperature cuprous sulfide
- Sintering of Si3N4 with Li-exchanged zeolite additive
- Effect of LiYO2 addition on sintering behavior and indentation properties of silicon nitride ceramics
- Mechanism of quasi-viscous flow of zinc single crystals
- The absolute thermoelectric power of chromium, molybdenum, and tungsten
- Modelling of metal – mould interface resistance in the Al-11.5 wt.% Si alloy casting process
- Kösterpreis
- Award/Preisverleihung
- Notifications
- Personal
- Conferences
Artikel in diesem Heft
- Contents
- Editorial
- Nanoindentation creep and stress relaxation tests of polycarbonate: Analysis of viscoelastic properties by different rheological models
- Investigation of SiO2 thin films on Si substrates for use as standards for laser-acoustic measuring devices
- Determination of the critical tensile stress of sapphire by spherical indentation with additional lateral forces
- The deformation behaviour of electrodeposited nanocrystalline Ni in an atomic force microscope with a newly developed in situ bending machine
- In situ electrochemical nanoindentation of a nickel (111) single crystal: hydrogen effect on pop-in behaviour
- Indentation behaviour of (011) thin films of III–V semiconductors: polarity effect differences between GaAs and InP
- Multiwall carbon nanotubes-based composites – mechanical characterization using the nanoindentation technique
- Nanoindentation studies of stamp materials for nanoimprint lithography
- Experimental and thermodynamic evaluation of the Co–Cr–C system
- Thermodynamics of high-temperature cuprous sulfide
- Sintering of Si3N4 with Li-exchanged zeolite additive
- Effect of LiYO2 addition on sintering behavior and indentation properties of silicon nitride ceramics
- Mechanism of quasi-viscous flow of zinc single crystals
- The absolute thermoelectric power of chromium, molybdenum, and tungsten
- Modelling of metal – mould interface resistance in the Al-11.5 wt.% Si alloy casting process
- Award/Preisverleihung
- Personal
- Conferences
- Contents
- Editorial
- Editorial
- Basic
- Nanoindentation creep and stress relaxation tests of polycarbonate: Analysis of viscoelastic properties by different rheological models
- Investigation of SiO2 thin films on Si substrates for use as standards for laser-acoustic measuring devices
- Determination of the critical tensile stress of sapphire by spherical indentation with additional lateral forces
- The deformation behaviour of electrodeposited nanocrystalline Ni in an atomic force microscope with a newly developed in situ bending machine
- In situ electrochemical nanoindentation of a nickel (111) single crystal: hydrogen effect on pop-in behaviour
- Indentation behaviour of (011) thin films of III–V semiconductors: polarity effect differences between GaAs and InP
- Multiwall carbon nanotubes-based composites – mechanical characterization using the nanoindentation technique
- Nanoindentation studies of stamp materials for nanoimprint lithography
- Experimental and thermodynamic evaluation of the Co–Cr–C system
- Applied
- Thermodynamics of high-temperature cuprous sulfide
- Sintering of Si3N4 with Li-exchanged zeolite additive
- Effect of LiYO2 addition on sintering behavior and indentation properties of silicon nitride ceramics
- Mechanism of quasi-viscous flow of zinc single crystals
- The absolute thermoelectric power of chromium, molybdenum, and tungsten
- Modelling of metal – mould interface resistance in the Al-11.5 wt.% Si alloy casting process
- Kösterpreis
- Award/Preisverleihung
- Notifications
- Personal
- Conferences