Properties of powders of a tungsten-free alloy produced by explosion mechanochemical synthesis
- Far East Polytechnic Institute, Vladivostok (Ukraine)
Intensified milling is used extensively in conventional technology of production of tungsten-free hard alloys to produce a homogeneous mixture of titanium carbide with a binding component. The refining process lasts tens of hours and is energy-consuming. However, intensified milling can also be used for other purposes, in particulra for explosion mechanochemical synthesis (EMS). In this case, the role of mechanical activation is to initiate an exothermic reaction which then takes place spontaneously. It was shown that in mechanoactivation of the Ti-C-Ni composition in an enregy-stressed vibromill it is possible to synthesize a tungsten-free hard alloy over a short period of time (20-30 min). EMS of a tungsten-free hard alloy is characterized by the generation of a large amount of heat sufficient for melting the metallic binder - nickel, cobalt, and iron. Therefore, the resultant powder should differ from the powder produced by conventional technology, both in its structure and properties. The aim of this work was to examine these special features.
- OSTI ID:
- 114819
- Journal Information:
- Powder Metallurgy and Metal Ceramics, Vol. 33, Issue 1-2; Other Information: PBD: Jul 1994; TN: Translated from Poroshkovaya Metallurgiya; Nos. 1-2, 1-6(Jan-Feb 1994)
- Country of Publication:
- United States
- Language:
- English
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