 ##  [Contact Oxidation](/contact-oxidation) 

  ##  [Contact Oxidation](https://engineering.quantumdictionary.io/contact-oxidation-0) 

  
 [![Engineering & Applied Technologies Dictionary](/sites/default/files/styles/large/public/2026-01/Engineering%20%26%20Applied%20Technologies.png.webp?itok=_IKO7_-n)](/topic-specific-dictionaries/engineering-applied-technologies)


**Engineering &amp; Applied Technologies Dictionary**

 
Definition

The formation of oxide or other insulating films on the mating surfaces of electrical contacts (bulk metals or plated layers) that increases contact resistance, promotes intermittent connections and can produce localized heating or arcing under load.