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→Silver-Metal Oxide Materials Ag/CdO, Ag/SnO2, Ag/ZnO
*'''Silver-cadmium oxide (DODURIT CdO) materials'''
Silver-cadmium oxide (DODURIT CdO) materials with 10-15 wt% are produced by both, internal oxidation and powder metallurgical methods ''<xr id="fig:fig2.25"/> (Table 2.25)''. <figure id="fig:fig2.25">[[File:Physical and Mechanical Properties.jpg|right|thumb|Physical and Mechanical Properties as well as Manufacturing Processes and Forms of Supply of Extruded Silver Cadmium Oxide (DODURIT CdO) Contact Materials]]</figure>
The manufacturing of strips and wires by internal oxidation starts with a molten alloy of silver and cadmium. During a heat treatment below it's melting point in a oxygen rich atmosphere in such a homogeneous alloy the oxygen diffuses from the surface into the bulk of the material and oxidizes the Cd to CdO in a more or less fine particle precipitation inside the Ag matrix. The CdO particles are rather fine in the surface area and are becoming larger further away towards the center of the material <xr id="fig:fig2.83"/> (Fig. 2.83).
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