Structure and properties of nanophase TiO/sub 2/

Conference · Wed Jul 01 00:00:00 EDT 1987

OSTI ID:5681484

Siegel, R W; Hahn, H; Ramasamy, S; Zongquan, Li; Ting, Lu; Gronsky, R

Ultrafine-grained, nanophase samples of TiO/sub 2/ (rutile) were synthesized by the gas-condensation method and subsequent in-situ compaction, and then studied by transmission electron microscopy, Vickers hardness measurements, and positron annihilation spectroscopy as a function of sintering temperature. The nanophase compacts densified rapidly above 500/sup 0/C, with only a small increase in grain size. The hardness values obtained by this method are comparable to or greater than coarser-grained compacts, but at temperatures 400 to 600/sup 0/C lower than conventional sintering temperatures and without the need for sintering aids. 11 refs., 3 figs.

• Research Organization: Argonne National Lab., IL (USA); Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5681484
• Report Number(s): CONF-870793-3; ON: DE88002922; TRN: 88-002855
• Resource Relation: Conference: Conference on interface science and engineering, Lake Placid, NY, USA, 12 Jul 1987; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
TITANIUM OXIDES
GRAIN SIZE
CERAMICS
HARDNESS
SCANNING ELECTRON MICROSCOPY
TEMPERATURE DEPENDENCE
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
CHALCOGENIDES
COHERENT SCATTERING
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRON MICROSCOPY
MECHANICAL PROPERTIES
MICROSCOPY
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
SCATTERING
SIZE
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies
656002 - Condensed Matter Physics- General Techniques in Condensed Matter- (1987-)