2,808
edits
Changes
→6.4.5 Physical Effects in Sliding and Connector Contacts
*'''Mechanical wear of sliding contacts'''
{| class="twocolortable" style="text-align: left; font-size: 12px"|-|dV/dx = k x FK F<sub>K</sub> /3 HWH<sub>W</sub> 3 |dV/dx Wear volume in mm <sup>3</sup> per slide path length in mm|k Coefficient of frictional wearHW |H<sub>W</sub> Hardness of the softer material<br />(Brinell or Vickers units)FK |F<sub>K</sub> Contact force in cN|'''Wear coefficient k during material transfer'''-4 |Silver – Silver 120 x 10<sup>-4 </sup>|Platinum – Platinum 400 x 10<sup>-4 </sup>|Silver – Platinum 1.3 x 10<sup>-4</sup>|'''Coefficient of fractional wear k during wear loss'''-4 |Silver – silver 8 x 10<sup>-4 </sup>|Gold – gold 9 x 10<sup>-4 </sup>|Platinum – platinum 40 x 10<sup>-4</sup>4 |Silver – gold 9 x 10<sup>-4 </sup>|Silver – platinum 5 x 10<sup>-4</sup>|}
Fig. 6.15: Coefficient of frictional wear for the wear loss of sliding contacts Silver/Silver
