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  4. № 12 2014
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The structure and properties of the composite W—50% (vol.) Cu, prepared using a tungsten powder, activated by grinding in a ball mill

L.Kryachko,
 
A.Laptev,
 
O.Tolochyn,
 
N.Bega,
 
Y.Yevich,
 
M.Golovkova,
 
A.V.Lebid
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Omeliana Pritsaka str.,3, Kyiv, 03142, Ukraine
Electrical Contacts and Electrodes - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2014, #12
http://www.materials.kiev.ua/article/1136

Abstract

The conditions for sealing samples of the mixture W—50% (vol.) Cu made using tungsten powder activated by grinding in a ball mil l were studied. Impact sintering in a range of T = 900—1000 0C, using sucrose as a reductant from said charge received the samples with a uniform structure, 97—98,3% relative density and improved mechanical characteristics (Rbm = 1170 MPa, HV = 3,176 MPa). Found various forms W crystallization from a melt formed by the action of the arc on the electrode surface of the test composition. Full text download


ACTIVATED BY GRINDING TUNGSTEN POWDER, COMPOSITE MATERIAL, IMPACT HOT PRESSING, WORKING ELECTRODE SURFACE, W—CU COMPOSITE MICROSTRUCTURE

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