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RESEARCH PRODUCT
Reactive Sintering of molybdenum disilicide by Spark Plasma Sintering from mechanically activated powder mixtures: Processing parameters and properties
G. CabouroFrédéric BernardYu. GrinEric GaffetSébastien Chevaliersubject
010302 applied physicsMaterials scienceScanning electron microscopeMechanical EngineeringMetallurgyMetals and AlloysMolybdenum disilicideSpark plasma sinteringSintering02 engineering and technology[CHIM.MATE]Chemical Sciences/Material chemistry021001 nanoscience & nanotechnologyMicrostructure01 natural scienceschemistry.chemical_compoundchemistryMechanics of MaterialsAgglomerate[ CHIM.MATE ] Chemical Sciences/Material chemistry0103 physical sciencesOxidizing agentVickers hardness testMaterials Chemistry0210 nano-technologyComputingMilieux_MISCELLANEOUSdescription
Abstract Dense molybdenum disilicide with a nano-organized microstructure was synthesized by mechanical activation, by producing nanostructured agglomerates of a 1:2 mixture of Mo and Si, followed by the synthesis/consolidation in one step using SPS technology. In order to synthesize a dense molybdenum disilicide with a perfectly controlled microstructure, an investigation of the influence of Spark Plasma Sintering processing parameters (temperature, heating rate, mechanical pressure and holding time) on the chemical composition and the microstructure characteristics has been performed. The present work shows also that the so-obtained materials present better oxidation resistance in comparison to a dense microstructured MoSi 2 , due to the silica scale formation under high-temperature oxidizing atmosphere. The most interesting results are obtained at “low” temperature (673–873 K).
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-10-01 |