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Ultrafine TaC powders were synthesized by mechano-chemical process (MCP). The synthesis procedures include (1) preparation of precursor powder by spray drying of liquid solution of tantalum oxalate, (2) calcinations to evaporate volatile components in the precursor powder and synthesis of nanostructured tantalum oxides, (3) ball milling with carbon homogeneously, and then carbothermal reaction in...
The reduced W-20% Cu powder with W particle sizes of about 30-100 nm and uniform distribution of components was successfully synthesized by mechano-thermochemical process. This process consists of three steps: the producing of oxide powder, the wet ball milling of oxide powder and the final reduction. W/Cu composite oxide clusters with a spherical shell structure were prepared by spray drying of aqueous...
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