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→Silver-Palladium Alloys
AgPd alloys are hard, arc erosion resistant, and have a lower tendency towards material transfer under DC loads <xr id="tab:Contact and Switching Properties of Silver-Palladium Alloys"/> (Table 2.19). On the other hand the electrical conductivity is decreased at higher Pd contents. The ternary alloy AgPd30Cu5 has an even higher hardness which makes it suitable for use in sliding contact systems.
AgPd alloys are mostly used in relays for the switching of medium to higher loads (>60V, >2A) as shown in <xr id="tab:Application Examples and Forms of Suppl for Silver-Palladium Alloys"/> (Table 2.20). Because of the high palladium price these formerly solid contacts have been widely replaced by multi-layer designs such as AgNi0.15 or AgNi10 with a thin Au surface layer. A broader field of application for AgPd alloys remains in the wear resistant sliding contact systems.
<xr id="fig:fig2.66Phase diagram of silver palladium"/> Fig. 2.66: Phase diagram of silver-palladium
<xr id="fig:fig2.67Strain hardening of AgPd30 by cold working"/> Fig. 2.67: Strain hardening of AgPd30 by cold working
<xr id="fig:fig2.68Strain hardening of AgPd50 by cold working"/> Fig. 2.68: Strain hardening of AgPd50 by cold working
<xr id="fig:fig2.69Strain hardening of AgPd30Cu5 by cold working"/> Fig. 2.69: Strain hardening of AgPd30Cu5 by cold working
<xr id="fig:fig2.70Softening of AgPd30 AgPd50 AgPd30Cu5"/> Fig. 2.70: Softening of AgPd30, AgPd50, and AgPd30Cu5 after annealing of 1 hr after 80% cold working
<div class="multiple-images">
<figure id="fig:fig2.66Phase diagram of silver palladium">
[[File:Phase diagram of silver palladium.jpg|left|thumb|<caption>Phase diagram of silver-palladium</caption>]]
</figure>
<figure id="fig:fig2.67Strain hardening of AgPd30 by cold working">
[[File:Strain hardening of AgPd30 by cold working.jpg|left|thumb|<caption>Strain hardening of AgPd30 by cold working</caption>]]
</figure>
<figure id="fig:fig2.68Strain hardening of AgPd50 by cold working">
[[File:Strain hardening of AgPd50 by cold working.jpg|left|thumb|<caption>Strain hardening of AgPd50 by cold working</caption>]]
</figure>
<figure id="fig:fig2.69Strain hardening of AgPd30Cu5 by cold working">
[[File:Strain hardening of AgPd30Cu5 by cold working.jpg|left|thumb|<caption>Strain hardening of AgPd30Cu5 by cold working</caption>]]
</figure>
<figure id="fig:fig2.70Softening of AgPd30 AgPd50 AgPd30Cu5">
[[File:Softening of AgPd30 AgPd50 AgPd30Cu5.jpg|left|thumb|<caption>Softening of AgPd30, AgPd50, and AgPd30Cu5 after annealing of 1 hr after 80% cold working</caption>]]
</figure>