Basic research in crystalline and noncrystalline ceramic systems

Technical Report · Thu May 01 04:00:00 EDT 1986

OSTI ID:7078747

Kingery, W D; Flemings, Jr, M C; Dummer, G H

Grain boundaries need to be studied in ceramics in order to be able to control their properties. Grain boundaries in MgO were found to offer a resistance to electronic mobility as a result of their negative charge, especially for n-type conductivity. Grain boundary ionic conductivity increases at high temperature in oxidizing (but not in reducing) atmospheres. The role of additives in the HT sintering and grain growth of SiC was studied. (DLC)

• Research Organization: Massachusetts Inst. of Tech., Cambridge (USA). Dept. of Materials Science and Engineering
• DOE Contract Number: AC02-76ER02390
• OSTI ID: 7078747
• Report Number(s): DOE/ER/02390-T3; ON: DE88011577
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ADDITIVES
ALKALINE EARTH METAL COMPOUNDS
CARBIDES
CARBON COMPOUNDS
CERAMICS
CHALCOGENIDES
CRYSTAL STRUCTURE
DOCUMENT TYPES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FABRICATION
GRAIN BOUNDARIES
GRAIN GROWTH
IONIC CONDUCTIVITY
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MICROSTRUCTURE
NITRIDES
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
PROGRESS REPORT
SILICON CARBIDES
SILICON COMPOUNDS
SILICON NITRIDES
SINTERING