• The tin commandments
• Silver-silver vs. tin silver electrical connectors for high current and high vibration applications, ISTFA 2005 conference report
• Dependence on force. p154-74.pdf: 1974 reference studies effect of contact force.
• Korean papers:
  • tin.pdf: "Evaluation of surface characteristics under fretting of electrical contacts:Removal behaviour of hot dipped tin coating", 2008.
  • tin4.pdf: "Fretting corrosion characteristics of electrodeposited and hot dipped tin coating contacts", 2007.
  • tin2.pdf: "Effect of fretting amplitude and frequency on the fretting corrosion behaviour of tin plated contacts", 2006,
  • tin3.pdf: "Studies of tin coated brass contacts in fretting conditions under different normal loads and frequencies", 2007 .

• Cris slides at the CMS Electronic week.

• The lubricant, santovac-OS-138 we want to use is based in polyphenyl ether, which is supposed to have very good radiation resistant properties, be harmless and not flammable.

• Symptoms: Increase contact resistance resulting in larger voltage contact drop and temperature increase (sometimes even leading to connector meltdown)
• We have two main pieces of information that indicates we face fretting corrosion in our LV PS connectors (Ag-plated pin on tin-plated surface)
  • Temperature increase ALWAYS (stats > 10) observed on one polarity: tin-plated end at higher voltage that Ag-plated pin.
  • Observation of small amounts of debris on the connector

• It has been also observed also in HCAL PS (same connectors).

-- IgnacioRedondo - 27-Aug-2010