Published January 1982 | Version v1
Journal article Metadata-only

Sintering of high-dispersed molybdenum and tungsten powders

Creators

  • 1. AN SSSR, Moscow. Inst. Novykh Khimicheskikh Problem

Description

Sintering conditions are studied for high-dispersed molybdenum and tungsten. A possibil+ty is shown for changes in the specific surface under vacuum annealing of free bulk high-dispersed powders within a wide range. The temperature for obtaining practically poreless specimens due to hot pressing of powder molybdenum and tungsten with a particle size less than 0.05 μm is established to be 1600 K, i.e. it is 400 K lower than sintering temperature for the powders with particle size above 1 μm. It is shown that oxygen and carbon contents in the sintered specimens are more than twice as low as in the initial one; microhardness of sintered briquettes is in satisfactory argeement with the data available in literature for molybdenum and tungsten

Additional details

Additional titles

Original title (Russian)
Спекание высокодисперсных порошков молибдена и вольфрама

Publishing Information

Journal Title
Poroshk. Metall.
Journal Issue
no.1
Series
Poroshk. Metall.
ISSN
0032-4795

INIS

Country of Publication
Ukraine
Country of Input or Organization
USSR
INIS RN
13688840
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ANNEALING; CARBON; COMPACTS; HOT PRESSING; IMPURITIES; MICROHARDNESS; MICROSTRUCTURE; MOLYBDENUM; OXYGEN; PARTICLE SIZE; POROSITY; SINTERING; TEMPERATURE DEPENDENCE; TUNGSTEN
Descriptors DEC
CRYSTAL STRUCTURE; ELEMENTS; FABRICATION; HARDNESS; HEAT TREATMENTS; MATERIALS WORKING; MECHANICAL PROPERTIES; METALS; NONMETALS; PRESSING; SIZE; TRANSITION ELEMENTS

Optional Information

Notes
For English translation see the journal Soviet Powder Metallurgy and Metal Ceramics (USA).