Changes

====<!--6.4.4 -->Switching Contacts====<ul><li>'''Effects during switching operations'''</li>

Fig. 6<div class="multiple-images"><figure id="fig:Contact_opening_with_arc_formation_schematic">[[File:Contact opening with arc formation schematic.7 jpg|left|thumb|<caption>Contact opening with arc formation (schematic)</caption>]]</figure></div><div class="clear"></div>

*<li>'''Influence of out-gasing from plastics'''Fig. 6.9:Histogram of the contactresistance R of an electroplated Kpalladium layer (3 μm) with andwithout hard gold flash plating(0.2 μm) after exposure withdifferent plastic materials</li>

<xr id="fig:Histogram_of_the_contact_resistance_Rk"/><!--Fig. 6.109: Contact resistance with exposure to out-gasing from plastics as a function -> Histogram of numbers the contact resistance Rk ofoperations at 6 V ,100 mA: 1 Silicon containing plastic; an electroplated palladium layer (3 μm) with and without hard gold flash plating (0.2 Plastics μm) after exposure with strongly out-gasing DCcomponents; 3 Plastics with minimal out-gasing componentsdifferent plastic materials

*'''Influence <xr id="fig:Contact resistance with exposure to out gasing from plastics"/><!--Fig. 6.10:--> Contact resistance with exposure to out gasing from plastics as a function of numbers of corrosive gases on the contact resistance'''operations at 6 V_DC,100 mA: 1 Silicon containing plastic; 2 Plastics with strongly out-gasing components; 3 Plastics with minimal out-gasing components

 <div class="multiple-images"><figure id="fig:Histogram_of_the_contact_resistance_Rk">[[File:Histogram of the contact resistance Rk.jpg|left|thumb|<caption>Histogram of the contact resistance R_K of an electroplated palladium layer (3 μm) with and without hard gold flash plating (0.2 μm) after exposure with different plastic materials</caption>]]</figure> <figure id="fig:Contact resistance with exposure to out gasing from plastics">[[File:Contact resistance with exposure to out gasing from plastics.jpg|left|thumb|<caption>Contact resistance with exposure to out-gasing from plastics as a function of numbers of operations at 6 V_DC,100 mA: 1 Silicon containing plastic; 2 Plastics with strongly out-gasing components; 3 Plastics with minimal out-gasing components</caption>]]</figure></div><div class="clear"></div>  <li>'''Influence of corrosive gases on the contact resistance'''</li> <xr id="fig:Distribution of cumulative frequency H of the contact resistance for solid contact rivets"/><!--Fig. 6.11: --> Distribution of cumulative frequency H of the contact resistance for solid contact rivetsafter 10 days exposure in a three-component test environment with 400 ppb each of H₂S, SO₂ andNO₂ at 25°C, 75% RH; Contact force 10cN; Measuring parameters: ≤ 40 mV_DC,10 mA; Probing

Fig<div class="multiple-images"><figure id="fig:Distribution of cumulative frequency H of the contact resistance for solid contact rivets">[[File:Distribution of cumulative frequency H of the contact resistance for solid contact rivets. 6.8jpg|left|thumb|<caption>Distribution of cumulative frequency H of the contact resistance for solid contact rivets after 10 days exposure in a three-component test environment with 400 ppb each of H₂S, SO₂ and NO₂ at 25°C, 75% RH; Contact force 10cN; Measuring parameters: Influences on ≤ 40 mV_DC,10 mA; Probingcontact areas in relays: Gold rivet</caption>]]</figure></div><div class="clear"></div>

*'''Contact Phenomena under the influence of arcing Matertia'''*'''Material transfer'''Fig. 6.12[[File: Material transfer under DC load a) Cathode; b) AnodeInfluences on contact areas in relays.6 Material: AgNi0.15; Switching parameters: 12VDC, 3 A, 2x10 operationsjpg|right|thumb|Influences on contact areas in relays]]

*<li>'''Arc erosionContact Phenomena under the influence of arcing Matertia'''</li><ul><li>'''Material transfer'''</li>

<xr id="fig:Material transfer under DC load"/><!--Fig. 6.13 Arc erosion of 12:--> Material transfer under DC load a Ag) Cathode; b) Anode. <br /SnO> Material: AgNi0.15; Switching parameters: 12V_2DC contact pair after extreme arcing conditionsa) Overall view; b) Partial detail view, 3 A, 2x10⁶ operations

*'''Contact welding'''Fig<div class="multiple-images"><figure id="fig:Material transfer under DC load">[[File:Material transfer under DC load.jpg|left|thumb|<caption>Material transfer under DC load a) Cathode; b) Anode. 6<br /> Material: AgNi0.1415; Switching parameters: Micro structure of a welded contact pair (Ag/SnO12V_2DC 88, 3 A, 2x10⁶ perations</12 - Agcaption>]]</CdO88figure></12) div>after extremely high current load. a) Ag/SnO<subdiv class="clear">2</subdiv> 88/12; b) Ag/CdO88/12

[[Application Tables and Guidance Guideline Data for the Use of Electrical ContactsContact Design#References|References]] [[de:Schaltende Kontakte]]