Abstract
There was investigated process parameters (bulk density and compactability at different pressures) of ready-to-press (RTP) powders of hard alloy WN8 (WC + 8 % Ni) with different binders, in conjunction with achievable green macrostructure, in the first place, absence of post-pressing cracks and large inter-granular porosity (> 60 μm), that was specified by means of mercury porosimetry and scanning electronic microscopy methods. RTP powders were prepared with using of conventional technology that is mixing with binder solution, drying and consequent rubbing through grate, with aid of different industrial binders on the base of synthetic rubber, paraffin wax, polyethylene glycol, and water-soluble binder. Debinding temperature ran- ges were determined by means of thermogravimetry method. There were showed advantages and disadvantages of studied binders.
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Schedule a callMore From: Izvestiya Vuzov. Poroshkovaya Metallurgiya i Funktsional’nye Pokrytiya (Proceedings of Higher Schools. Powder Metallurgy аnd Functional Coatings)
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