Kinetics of densification and growth of refractory phase grains in the liquid-phase sintering of very finely divided tungsten-copper materials

Journal Article · Sun Feb 01 00:00:00 EST 1987 · Sov. Powder Metall. Met. Ceram. (Engl. Transl.); (United States)

OSTI ID:6764058

Prokushev, N K; Smirnov, V P

The authors experimentally and mathematically study the kinetics of compaction and grain growth in the liquid-phase sintering of a tungsten-20% copper refractory, using scanning and transmission electron microscopy and accounting for such factors as the solubility and diffusion of tungsten in copper, the viscosity and wettability of the liquid refractory, and the time dependence of the ultimate porosity of the alloy. They conclude that the kinetics of tungsten grain growth during sintering and compaction is determined by a process of transport of the refractory component through the liquid phase.

• OSTI ID: 6764058
• Journal Information: Sov. Powder Metall. Met. Ceram. (Engl. Transl.); (United States), Vol. 25:9; Other Information: Translated from Poroshk. Metall.; 25: No. 9(285), 30-37(Sep 1986)
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER ALLOYS
COMPACTING
GRAIN GROWTH
SINTERING
TUNGSTEN BASE ALLOYS
COPPER
CRYSTAL-PHASE TRANSFORMATIONS
DEFORMATION
DIFFUSION
GRAIN SIZE
KINETICS
MATHEMATICAL MODELS
POROSITY
REFRACTORIES
SCANNING ELECTRON MICROSCOPY
SOLUBILITY
TIME DEPENDENCE
TRANSMISSION ELECTRON MICROSCOPY
TUNGSTEN
VISCOSITY
WETTABILITY
ALLOYS
CRYSTAL STRUCTURE
ELECTRON MICROSCOPY
ELEMENTS
FABRICATION
METALS
MICROSCOPY
MICROSTRUCTURE
PHASE TRANSFORMATIONS
SIZE
TRANSITION ELEMENTS
TUNGSTEN ALLOYS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies