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→Silver–Graphite (GRAPHOR)-Materials
The main applications for Ag/C materials are protective switching devices such as miniature molded case circuit breakers, motor-protective circuit breakers, and fault current circuit breakers, where during short circuit failures highest resistance against welding is required <xr id="tab:tab2.34"/> (Table 2.34). For higher currents the low arc erosion resistance of Ag/C is compensated by asymmetrical pairing with more erosion resistant materials such as Ag/Ni and Ag/W.
<xr id="fig:fig2.126"/> Fig. 2.126: Strain hardening of Ag/C 96/4 D by cold working
<xr id="fig:fig2.127"/> Fig. 2.127: Softening of Ag/C 96/4 D after annealing
<xr id="fig:fig2.128"/> Fig. 2.128: Strain hardening of Ag/C DF by cold working
<xr id="fig:fig2.129"/> Fig. 2.129: Softening of Ag/C DF after annealing
<xr id="fig:fig2.130"/> Fig. 2.130: Micro structure of Ag/C 97/3: a) perpendicular to extrusion direction
b) parallel to extrusion direction, 1) Ag/C contact layer, 2) Ag backing layer
<xr id="fig:fig2.131"/> Fig. 2.131: Micro structure of Ag/C 95/5: a) perpendicular to extrusion direction
b) parallel to extrusion direction, 1) Ag/C contact layer, 2) Ag backing layer
<xr id="fig:fig2.132"/> Fig. 2.132: Micro structure of Ag/C 96/4 D: a) perpendicular to extrusion direction
b) parallel to extrusion direction, 1) Ag/C contact layer, 2) Ag backing layer
<xr id="fig:fig2.133"/> Fig. 2.133: Micro structure of Ag/C DF: a) perpendicular to extrusion direction
b) parallel to extrusion direction, 1) Ag/C contact layer, 2) Ag/Ni 90/10 backing layer
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Fig. 2.126: Strain hardening of Ag/C 96/4 D by cold working
[[File:Strain hardening of Ag C 96 4 D.jpg|right|thumb|Strain hardening of Ag/C 96/4 D by cold working]]
b) parallel to extrusion direction, 1) Ag/C contact layer, 2) Ag/Ni 90/10 backing layer
[[File:Micro structure of Ag C DF.jpg|right|thumb|Micro structure of Ag/C DF: a) perpendicular to extrusion direction b) parallel to extrusion direction, 1) Ag/C contact layer, 2) Ag/Ni 90/10 backing layer]]
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'''Table 2.32: Physical Properties of Silver–Graphite (GRAPHOR) Contact Materials'''