FIELD: metallurgy.
SUBSTANCE: spark plug electrode material is a nickel-based alloy containing silicon in amount from 0.7 to 1.3 wt %, copper in amount from 0.5 to 1.0 wt % and nickel in amount from 97.5 to 98.5 wt % and having on a portion of its surface at least a layer of nickel oxide formed in oxidizing atmosphere from nickel oxide grains, which grain boundary phase contains silicon and/or its oxide in amount from 1 to 5 wt % based on total weight of oxide layer.
EFFECT: material is characterized by low electro erosion wear, high corrosion resistance, thermodynamic and mechanical stability.
18 cl, 4 dwg
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