COMPOUND Russian patent published in 1997 - IPC

FIELD: electricity conducting compounds, can be used shield electromagnetic waves and as electrodes of ceramic capacitors, microcapacitors, piezoids, variable resistors, thermistors, solar cells, electricity conducting pastes for chip resistors, resistor or variable resistor circuits, pastes for conducting circuits. SUBSTANCE: compound has in its composition copper alloy powder presented by general formula AgxCuyMz, where M is one or more metals, chosen from Pb, Bi, and Zn; x, y, and z are respective atomic relations chosen from condition and x+y+x=1, organic filler, and glass mixture. Silver concentration on particles surface is higher than mean silver concentration and there is region where silver concentration increases towards particles surface. EFFECT: improved electric conductance, resistance to oxidation and electron migration, wettability by solder, resistance to solder leaching, and stability. 6 cl