Change of grain size from W powder to WC crystal

Journal Article · Fri Sep 01 04:00:00 EDT 1972 · Monatsh. Chem., v. 103, no. 5, pp. 1465-1482

OSTI ID:4383914

Hara, A; Miyake, M

The change of grain size during each stage of the process was studied mainly by optical and electron microscopy. The grain size has a marked effect on the properties of cemented carbide. In order to determine the process of formation of WC powder, the cross section and the surface of the carburized powder were examined microscopically. The mechanisms of carburization and grain growth were clarified. Grain growth in sintering and the effect of grain size distribution were also studied. It was concluded that grain growth begins long before the appearance of the liquid phase. It is pointed out that the inner structure of WC should be studied at the atomic level. (auth)

• Research Organization: Sumitome Electric Industries Ltd., Itami, Japan
• NSA Number: NSA-29-013114
• OSTI ID: 4383914
• Journal Information: Monatsh. Chem., v. 103, no. 5, pp. 1465-1482, Journal Name: Monatsh. Chem., v. 103, no. 5, pp. 1465-1482; ISSN MOCHA
• Country of Publication: Country unknown/Code not available
• Language: German

Related Subjects

*TUNGSTEN CARBIDES-- GRAIN GROWTH
*TUNGSTEN-- CARBURIZATION
DISTRIBUTION
ELECTRON MICROSCOPY
GRAIN SIZE
N50130* --Metals
Ceramics
& Other Materials--Ceramics & Cermets--Properties
Structure & Phase Studies
N50230 --Metals
Ceramics
& Other Materials--Metals & Alloys--Properties
Structure & Phase Studies
OPTICAL MICROSCOPY
POWDERS
SINTERING