학술논문
Preparation of Ultrafine-Grained WC–ZrO2 Ceramics by Spark Plasma Sintering.
Document Type
Article
Author
Source
Subject
*SINTERING
*CERAMICS
*POWDERS
*TUNGSTEN carbide
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*
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Language
ISSN
0020-1685
Abstract
WC–(1, 3, 5)% ZrO2 ceramics have been produced by spark plasma sintering (SPS). WC–ZrO2 powder mixtures have been prepared by ultrasonic homogenization and stirring of WC nanopowder and submicron t-ZrO2 powder. The WC–ZrO2 sintering rate has been shown to be limited by the grain-boundary diffusion process. Increasing the percentage of ZrO2 leads to a slight increase in optimal SPS temperature, an increase in the concentration of W2C particles, and a decrease in hardness. [ABSTRACT FROM AUTHOR]