Papers by Keyword: Liquid Sintering

Abstract: Steel-bonded cemented carbide sheet considered as cladding was successfully bonded with carbon steel plate by a technological combination of powder explosive compaction and liquid sintering. The microstructural interface between steel-bonded cemented carbide cladding and carbon steel plate was characterized by SEM, EDS analysis and hardness testing. The results showed that the gradient distributions of the elements Fe, C and W were found in the normal direction of the interface. The element W permeated about 100μm in depth through the side of carbon steel. The improved hardness of about 600～700HV of cladding was attributed to multiple carbides.

Abstract: Pure Ti, TiN and graphite powders were mechanically alloyed to synthesize Ti(C,N) powder with nanocrystalline microstructure. The effect of milling variables on the synthesizing behavior of the powders was investigated. As a result of milling, nano Ti(C,N) phase was synthesized by mechanical alloying. After that, Ti(C,N)-based cermets were fabricated with the powders as raw ceramic materials. It was found that the grain size was affected by the content of mechanical alloyed (MAed) Ti(C,N). The grains of the cermet with suitable MAed Ti(C,N) powder were smaller than that of the typical cermets prepared from the commercial powders, and the rim phase surrounding the hard core was also complete. As a result of this, the transverse rupture strength and hardness of the cermets were improved.