MICROSTRUCTURAL EVOLUTION DURING LIQUID-PHASE SINTERING OF HIGH-SPEED STEEL-BASED COMPOSITES CONTAINING TIN-COATED AL2O3, TIC, OR AL2O3 PARTICLES - INFLUENCE ON WEAR PROPERTIES

被引:12
作者
JOUANNYTRESY, C [1 ]
VARDAVOULIAS, M [1 ]
JEANDIN, M [1 ]
机构
[1] ECOLE MINES PARIS,CTR MAT P M FOURT,F-91003 EVRY,FRANCE
关键词
D O I
10.1007/BF00365035
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A high-speed steel containing 1 0 vol % TiN-coated Al2O3, Al2O3, or TiC particles was liquid-phase sintered with the addition of copper-phosphorus. The mixtures were sintered in a furnace with a controlled axial temperature gradient, and their microstructural evolution during sintering was studied using quantitative image analysis. Additional samples were fully densified and tested using a pin-on-disc tribometre. Interfaces were characterized by transmission electron microscopy. The final microstructure depended on the behaviour of the liquid phases surrounding the ceramic particles during sintering, which was different for the three types, of particles used, and influenced the wear resistance.
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页码:6147 / 6154
页数:8
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