| 配方类型： |
METALS AND THEIR TREATMENT |
| 配方说明： |
Protective Coating for Electrical Contacts |
| 配制方法： |
Electronic leads and couples are being made of phenolic resins coated with metal alloys. A protective coating is used to prevent atmospheric corrosion of the metal film. Varnishes have been used for this service, but "Armid" O, a high molecular-weight fatty acid amide, has recently been adopted as an improved type of coating.
"Armid" O is a satisfactory corrosion inhibitor in this service, passing all exposure and salt-spray tests and in addition has the following advantages: 1. "Armid" O can be applied from dilute solution by dipping and "spin-drying" the parts.
2. The soft waxy film is an excellent lubricant for plug-in type connectors.
3. "Armid" O does not interfere with electrical conductance through a couple.
4. "Armid" O provides excellent resistance to fungi encountered in hot, humid climates. |
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