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ISO 4821:2022

Plain bearings — Dynamic adhesion test method for DLC coated parts under lubricated condition

General information
Valid from 18.05.2022
Directives or regulations
None
Standard history
Status
Date
Type
Name
18.05.2022
Main
This document specifies a procedure to measure the adhesion strength of diamond-like carbon (DLC) coatings specified in ISO 20523 by detecting acoustic emission signals using ball-on-disk method under the lubricated condition. DLC is normally coated on metal or ceramic. The test results are not applicable when the DLC coated parts operate in an unlubricated environment.
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