The effect of additive and sintering mechanism on the microstructural characteristics of W–40Cu composites
作者： M. Ahangarkani , S. Borgi , H. Abbaszadeh , A.A. Rahmani , K. Zangeneh-Madar
DOI: 10.1016/J.IJRMHM.2012.01.006
关键词:
摘要: Abstract In this research, effect of cobalt and nickel additives on the W–40wt.% Cu composites prepared by solid phase sintering infiltration (SPS + I) as well liquid (LPS) processes has been investigated. For purpose, three types powder consist pure tungsten, mixture tungsten–1wt.%Co tungsten-1wt.%Ni were separately compacted cold isostatic pressing (CIP). SPS + I process, specimens sintered at 1100 °C for 1 h subsequently infiltrated copper 1250 °C 1 h. LPS samples directly without initial sintering. Density was measured Archimedes method. Microstructure (i.e. contiguity, porosity, grain size) chemical composition studied SEM EDS, respectively. It is found that microstructural characteristics W–40wt.%Cu depend mechanism additive type. process higher in compared with ones obtained via process. This behavior related to W–W contiguity tungsten particles wettability.
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