Microstructure, electronic properties and chemical durability of vanadium pentoxide-based glasses and glass-ceramics. Final report 1 Nov 74--30 Apr 77

Technical Report · Wed Jun 01 04:00:00 EDT 1977

OSTI ID:6806924

Fahmy, A A

Crystallization of Vanadium Pentoxide from Vanadium Pentoxide-Phosphorous Pentoxide glasses containing 0-9 mol% Boron Trioxide during heat treatment in the range 220 C-410 C caused progressive microstructural changes which dramatically affected the electronic conductivity, the activation energy for conduction, and the resistance to chemical attack. All compositions were approximately 83% crystalline after heating to 410 C. As a result, the values of conductivity and activation energy were almost identical to those observed for pure polycrystalline Vanadium Pentoxide.

• Research Organization: North Carolina State Univ., Raleigh (USA). Dept. of Materials Science
• OSTI ID: 6806924
• Report Number(s): AD-A-047939
• 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
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ACTIVATION ENERGY
BORON COMPOUNDS
BORON OXIDES
CHALCOGENIDES
CHEMICAL PROPERTIES
CRYSTAL STRUCTURE
CRYSTALLIZATION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY
GLASS
HIGH TEMPERATURE
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHOSPHORUS COMPOUNDS
PHOSPHORUS OXIDES
PHYSICAL PROPERTIES
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
VANADIUM OXIDES