Evolution of C-rich SiOC ceramics
Abstract
In this Part II of the paper on the evolution of carbon-rich Si–O–C polymer-derived ceramics (PDCs), emphasis is placed on the strengths and limitations of transmission electron microscopy (TEM) techniques with high lateral resolution, i. e., electron energy-loss spectroscopy (EELS), high-resolution TEM (HRTEM) and energy-filtered TEM (EFTEM). Here, the identical SiOC materials, as described in Part I. EELS studies confirmed the progression of structural rearrangements within the SiOC matrix temperatures exceeding 1200 °C. High-resolution TEM imaging showed that the SiOC matrices are indeed predominantly amorphous even upon high thermal treatment. Energy-filtered TEM analysis revealed, in contrast to the results obtained by Raman spectroscopy (Part I), that the excess free carbon phase undergoes a pronounced rearrangement within the amorphous microstructure. HRTEM characterization revealed the distribution of phases within the amorphous SiOC matrix; information that is not accessible by integral spectroscopic techniques. Discrepancies between the interpretation of experimental results obtained by local versus integral characterization tools are discussed in detail.
Part of the reported work is an ongoing collaboration between SRI International and Colorado School of Mines, currently funded by the Ceramics Program at the National Science Foundation (NSF), contract No. DMR-0304968. The European Commission, the ORNL-SURA Program and the German Science Foundation (DFG) have also provided financial support for this research project.
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© 2006 Carl Hanser Verlag, München
Articles in the same Issue
- Frontmatter
- Microstructure and mechanical behavior of Pt-modified NiAl diffusion coatings
- Evolution of C-rich SiOC ceramics
- Evolution of C-rich SiOC ceramics
- Nanostructured SiC/BN/C ceramics derived from mixtures of B3N3H6 and [HSi(Me)C≡C]n
- Thermodynamic analysis of structural transformations induced by annealing of amorphous Si–C–N ceramics derived from polymer precursors
- Thermodynamic modelling of the Ce–Ni system
- Thermodynamic assessment of the Ce–O system in solid state from 60 to 67 mol.% O
- Phase transformations of iron nitrides at low temperatures (< 700 K) – application of mechanical mixtures of powders of nitrides and iron
- Effect of organic self-assembled monolayers on the deposition and adhesion of hydroxyapatite coatings on titanium
- Reconstruction and structural transition at metal/diamond interfaces
- Microstructure, hardness, and fracture toughness evolution of hot-pressed SiC/Si3N4 nano/micro composite after high-temperature treatment
- High-temperature plasticity of SiC sintered with Lu2O3-AlN additives
- Interaction of functionalised surfaces on silica with dissolved metal cations in aqueous solutions
- XRD and TEM study of NiO–LSGM reactivity
- Microstructure and dielectric properties of nanoscale oxide layers on sintered capacitor-grade niobium and V-doped niobium powder compacts
- Knudsen effusion mass spectrometric studies of the Al–Ni system: Thermodynamic properties over {AlNi + Al3Ni2} and {Al3Ni2 + Al3Ni}
- Aqueous solution deposition of indium hydroxide and indium oxide columnar type thin films
- Thermodynamic properties of B2-AlFeNi alloys: modelling of the B2-AlFe and B2-AlNi phases
- Kinetics of precipitate formation in (TixWyCrz)B2 solid solutions: influence of Cr concentration and Co impurities
- On the mechanisms governing the texture and microstructure evolution during static recrystallization and grain growth of low alloyed zirconium sheets (Zr702)
- Out-of-pile chemical compatibility of Pb–Bi eutectic alloy with Graphite
- Microstructural characterisation of a Co–Cr–Mo laser clad applied on railway wheels
- The Na–H system: from first-principles calculations to thermodynamic modeling
- Personal
- Conferences
- Frontmatter
- Basic
- Microstructure and mechanical behavior of Pt-modified NiAl diffusion coatings
- Evolution of C-rich SiOC ceramics
- Evolution of C-rich SiOC ceramics
- Nanostructured SiC/BN/C ceramics derived from mixtures of B3N3H6 and [HSi(Me)C≡C]n
- Thermodynamic analysis of structural transformations induced by annealing of amorphous Si–C–N ceramics derived from polymer precursors
- Thermodynamic modelling of the Ce–Ni system
- Thermodynamic assessment of the Ce–O system in solid state from 60 to 67 mol.% O
- Phase transformations of iron nitrides at low temperatures (< 700 K) – application of mechanical mixtures of powders of nitrides and iron
- Effect of organic self-assembled monolayers on the deposition and adhesion of hydroxyapatite coatings on titanium
- Reconstruction and structural transition at metal/diamond interfaces
- Applied
- Microstructure, hardness, and fracture toughness evolution of hot-pressed SiC/Si3N4 nano/micro composite after high-temperature treatment
- High-temperature plasticity of SiC sintered with Lu2O3-AlN additives
- Interaction of functionalised surfaces on silica with dissolved metal cations in aqueous solutions
- XRD and TEM study of NiO–LSGM reactivity
- Microstructure and dielectric properties of nanoscale oxide layers on sintered capacitor-grade niobium and V-doped niobium powder compacts
- Knudsen effusion mass spectrometric studies of the Al–Ni system: Thermodynamic properties over {AlNi + Al3Ni2} and {Al3Ni2 + Al3Ni}
- Aqueous solution deposition of indium hydroxide and indium oxide columnar type thin films
- Thermodynamic properties of B2-AlFeNi alloys: modelling of the B2-AlFe and B2-AlNi phases
- Regular Articles
- Kinetics of precipitate formation in (TixWyCrz)B2 solid solutions: influence of Cr concentration and Co impurities
- On the mechanisms governing the texture and microstructure evolution during static recrystallization and grain growth of low alloyed zirconium sheets (Zr702)
- Out-of-pile chemical compatibility of Pb–Bi eutectic alloy with Graphite
- Microstructural characterisation of a Co–Cr–Mo laser clad applied on railway wheels
- The Na–H system: from first-principles calculations to thermodynamic modeling
- Notifications
- Personal
- Conferences
Articles in the same Issue
- Frontmatter
- Microstructure and mechanical behavior of Pt-modified NiAl diffusion coatings
- Evolution of C-rich SiOC ceramics
- Evolution of C-rich SiOC ceramics
- Nanostructured SiC/BN/C ceramics derived from mixtures of B3N3H6 and [HSi(Me)C≡C]n
- Thermodynamic analysis of structural transformations induced by annealing of amorphous Si–C–N ceramics derived from polymer precursors
- Thermodynamic modelling of the Ce–Ni system
- Thermodynamic assessment of the Ce–O system in solid state from 60 to 67 mol.% O
- Phase transformations of iron nitrides at low temperatures (< 700 K) – application of mechanical mixtures of powders of nitrides and iron
- Effect of organic self-assembled monolayers on the deposition and adhesion of hydroxyapatite coatings on titanium
- Reconstruction and structural transition at metal/diamond interfaces
- Microstructure, hardness, and fracture toughness evolution of hot-pressed SiC/Si3N4 nano/micro composite after high-temperature treatment
- High-temperature plasticity of SiC sintered with Lu2O3-AlN additives
- Interaction of functionalised surfaces on silica with dissolved metal cations in aqueous solutions
- XRD and TEM study of NiO–LSGM reactivity
- Microstructure and dielectric properties of nanoscale oxide layers on sintered capacitor-grade niobium and V-doped niobium powder compacts
- Knudsen effusion mass spectrometric studies of the Al–Ni system: Thermodynamic properties over {AlNi + Al3Ni2} and {Al3Ni2 + Al3Ni}
- Aqueous solution deposition of indium hydroxide and indium oxide columnar type thin films
- Thermodynamic properties of B2-AlFeNi alloys: modelling of the B2-AlFe and B2-AlNi phases
- Kinetics of precipitate formation in (TixWyCrz)B2 solid solutions: influence of Cr concentration and Co impurities
- On the mechanisms governing the texture and microstructure evolution during static recrystallization and grain growth of low alloyed zirconium sheets (Zr702)
- Out-of-pile chemical compatibility of Pb–Bi eutectic alloy with Graphite
- Microstructural characterisation of a Co–Cr–Mo laser clad applied on railway wheels
- The Na–H system: from first-principles calculations to thermodynamic modeling
- Personal
- Conferences
- Frontmatter
- Basic
- Microstructure and mechanical behavior of Pt-modified NiAl diffusion coatings
- Evolution of C-rich SiOC ceramics
- Evolution of C-rich SiOC ceramics
- Nanostructured SiC/BN/C ceramics derived from mixtures of B3N3H6 and [HSi(Me)C≡C]n
- Thermodynamic analysis of structural transformations induced by annealing of amorphous Si–C–N ceramics derived from polymer precursors
- Thermodynamic modelling of the Ce–Ni system
- Thermodynamic assessment of the Ce–O system in solid state from 60 to 67 mol.% O
- Phase transformations of iron nitrides at low temperatures (< 700 K) – application of mechanical mixtures of powders of nitrides and iron
- Effect of organic self-assembled monolayers on the deposition and adhesion of hydroxyapatite coatings on titanium
- Reconstruction and structural transition at metal/diamond interfaces
- Applied
- Microstructure, hardness, and fracture toughness evolution of hot-pressed SiC/Si3N4 nano/micro composite after high-temperature treatment
- High-temperature plasticity of SiC sintered with Lu2O3-AlN additives
- Interaction of functionalised surfaces on silica with dissolved metal cations in aqueous solutions
- XRD and TEM study of NiO–LSGM reactivity
- Microstructure and dielectric properties of nanoscale oxide layers on sintered capacitor-grade niobium and V-doped niobium powder compacts
- Knudsen effusion mass spectrometric studies of the Al–Ni system: Thermodynamic properties over {AlNi + Al3Ni2} and {Al3Ni2 + Al3Ni}
- Aqueous solution deposition of indium hydroxide and indium oxide columnar type thin films
- Thermodynamic properties of B2-AlFeNi alloys: modelling of the B2-AlFe and B2-AlNi phases
- Regular Articles
- Kinetics of precipitate formation in (TixWyCrz)B2 solid solutions: influence of Cr concentration and Co impurities
- On the mechanisms governing the texture and microstructure evolution during static recrystallization and grain growth of low alloyed zirconium sheets (Zr702)
- Out-of-pile chemical compatibility of Pb–Bi eutectic alloy with Graphite
- Microstructural characterisation of a Co–Cr–Mo laser clad applied on railway wheels
- The Na–H system: from first-principles calculations to thermodynamic modeling
- Notifications
- Personal
- Conferences