Details
| Original language | English |
|---|---|
| Pages (from-to) | 245-250 |
| Number of pages | 6 |
| Journal | Journal of Materials Synthesis and Processing |
| Volume | 8 |
| Issue number | 3-4 |
| Publication status | Published - Jul 2000 |
Abstract
Studies of grain size effects in nanocrystalline materials require a preparation technique which allows adjustment of the grain size. We prepared various nanocrystalline ceramics by high-energy ball milling. The investigated systems are the oxide ceramics Li2O, LiNbO3, LiBO2, B2O3, TiO2 as monophase materials and the composite material Li2O : B2O3. The average grain size was adjusted by variation of the milling time. It was determined via line broadening of X-ray diffraction patterns (XRD) and directly with transmission electron microscopy (TEM). Thermal stability and thermally induced grain growth of the sample can be observed with differential thermal analysis and X-ray analysis. Further information concerning the structure of these heterogeneously disordered materials was extracted from nuclear magnetic resonance (NMR) and infrared spectroscopy. Li diffusion in the lithium-containing compounds is studied with ac conductivity measurements, as well as [7Li] NMR relaxation spectroscopy. The TiO2 is interesting for research on catalytic activity. Ball milling not only causes particle size reduction, but may also lead to phase transitions and chemical reaction. This was verified with XRD.
Keywords
- Ball milling, Interfacial regions, Nanocrystalline materials, Oxide ceramics, XRD
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
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In: Journal of Materials Synthesis and Processing, Vol. 8, No. 3-4, 07.2000, p. 245-250.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Nanocrystalline oxide ceramics prepared by high-energy ball milling
AU - Indris, S.
AU - Bork, D.
AU - Heitjans, P.
N1 - Funding Information: We are grateful to the Deutsche Forschungsgemein-schaft for financial support. We thank J. Beier and R. Röttger for help with sample characterization and M. Schäperkötter for TEM measurements as well as D. Hesse and A. Haeger for providing the starting materials for nanocrystalline rutile and anatase whose photocatalytic activity will be studied in a joint project.
PY - 2000/7
Y1 - 2000/7
N2 - Studies of grain size effects in nanocrystalline materials require a preparation technique which allows adjustment of the grain size. We prepared various nanocrystalline ceramics by high-energy ball milling. The investigated systems are the oxide ceramics Li2O, LiNbO3, LiBO2, B2O3, TiO2 as monophase materials and the composite material Li2O : B2O3. The average grain size was adjusted by variation of the milling time. It was determined via line broadening of X-ray diffraction patterns (XRD) and directly with transmission electron microscopy (TEM). Thermal stability and thermally induced grain growth of the sample can be observed with differential thermal analysis and X-ray analysis. Further information concerning the structure of these heterogeneously disordered materials was extracted from nuclear magnetic resonance (NMR) and infrared spectroscopy. Li diffusion in the lithium-containing compounds is studied with ac conductivity measurements, as well as [7Li] NMR relaxation spectroscopy. The TiO2 is interesting for research on catalytic activity. Ball milling not only causes particle size reduction, but may also lead to phase transitions and chemical reaction. This was verified with XRD.
AB - Studies of grain size effects in nanocrystalline materials require a preparation technique which allows adjustment of the grain size. We prepared various nanocrystalline ceramics by high-energy ball milling. The investigated systems are the oxide ceramics Li2O, LiNbO3, LiBO2, B2O3, TiO2 as monophase materials and the composite material Li2O : B2O3. The average grain size was adjusted by variation of the milling time. It was determined via line broadening of X-ray diffraction patterns (XRD) and directly with transmission electron microscopy (TEM). Thermal stability and thermally induced grain growth of the sample can be observed with differential thermal analysis and X-ray analysis. Further information concerning the structure of these heterogeneously disordered materials was extracted from nuclear magnetic resonance (NMR) and infrared spectroscopy. Li diffusion in the lithium-containing compounds is studied with ac conductivity measurements, as well as [7Li] NMR relaxation spectroscopy. The TiO2 is interesting for research on catalytic activity. Ball milling not only causes particle size reduction, but may also lead to phase transitions and chemical reaction. This was verified with XRD.
KW - Ball milling
KW - Interfacial regions
KW - Nanocrystalline materials
KW - Oxide ceramics
KW - XRD
UR - http://www.scopus.com/inward/record.url?scp=0034216561&partnerID=8YFLogxK
U2 - 10.1023/A:1011324429011
DO - 10.1023/A:1011324429011
M3 - Article
AN - SCOPUS:0034216561
VL - 8
SP - 245
EP - 250
JO - Journal of Materials Synthesis and Processing
JF - Journal of Materials Synthesis and Processing
SN - 1064-7562
IS - 3-4
ER -