Zobrazeno 1 - 10
of 12
pro vyhledávání: '"N. L. Pravoverov"'
Publikováno v:
Soviet Powder Metallurgy and Metal Ceramics. 26:482-486
The authors investigated the influence of plastic deformation on the microstructure and erosion properties of electric contacts produced from an extruded silver-20% cadmium oxide composite. Erosion was determined under electric discharge conditions a
Publikováno v:
Soviet Powder Metallurgy and Metal Ceramics. 20:790-794
Publikováno v:
Soviet Powder Metallurgy and Metal Ceramics. 21:475-479
It has been established that the erosion rate of P/M Ag-Ni composite contacts between which arc discharges of 25-A current amplitude are excited is related to their composition. It is shown that materials with a nickel content of 50–75% possess ade
Publikováno v:
Soviet Powder Metallurgy and Metal Ceramics. 25:879-884
The addition of 5% of bismuth oxide to an Ag-10% CdO powder composite enhances the erosion resistance of contacts made from it. Similar additions of tungsten and indium oxides adversely affect, and one of tin oxide has but little effect on, the erosi
Publikováno v:
Soviet Powder Metallurgy and Metal Ceramics. 22:279-284
An experimental investigation of 45 silver-base composites has confirmed that on contact (anode and cathode) surfaces an arc discharge attacks the phase of lowest thermal conductivity. The presence of refractory particles in silver-base contact compo
Publikováno v:
Soviet Powder Metallurgy and Metal Ceramics. 28:658-662
Beginning at the melting point of silicon, the role of the load bearing structural element is assumed by the silicon carbide carcass whose strength is also strongly dependent on the granulometric situation developing in the system. This dependence is
Publikováno v:
Soviet Powder Metallurgy and Metal Ceramics. 19:607-611
The action of an arc discharge on a contact made of a silver-intermetallic compound composite material is accompanied by selective erosion in the affected zone, which is a result of the anchoring of the arc discharge to particles of the intermetallic
Autor:
I. A. Tribunskaya, N. L. Pravoverov
Publikováno v:
Soviet Powder Metallurgy and Metal Ceramics. 8:1006-1011
1. Using the techniques of metallography, x-ray diffraction, and microhardness measurement, determinations were made of Tri, of sintered composites consisting of silver with Ti, V, Cr, Mn, Fe, Co, and Ni additions. 2. Composites containing Ti, V, Mn,
Autor:
N. L. Pravoverov, E. I. Malinina
Publikováno v:
Soviet Powder Metallurgy and Metal Ceramics. 22:396-398
A study was made of the structure, mechanical properties, contact resistance, and resistance to erosion of Ag-Ni3Ti composites containing up to 40% of the compound. It is shown that some composites of the series investigated posses an attractive comb
Autor:
I. A. Tribunskaya, N. L. Pravoverov
Publikováno v:
Metal Science and Heat Treatment. 8:488-489