Influence Kind of Binder on the Properties of and Quality of Green Part from Hard Alloy BH8
https://doi.org/10.17073/1997-308X-2014-4-3-8
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.
About the Authors
D. V. FyodorovRussian Federation
O. V. Semyonov
Russian Federation
V. I. Rumyantsev
Russian Federation
S. S. Ordanyan
Russian Federation
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Review
For citations:
Fyodorov D.V., Semyonov O.V., Rumyantsev V.I., Ordanyan S.S. Influence Kind of Binder on the Properties of and Quality of Green Part from Hard Alloy BH8. Powder Metallurgy аnd Functional Coatings (Izvestiya Vuzov. Poroshkovaya Metallurgiya i Funktsional'nye Pokrytiya). 2014;(4):3-8. (In Russ.) https://doi.org/10.17073/1997-308X-2014-4-3-8