ISO 4821:2022
ISO 4821:2022
Plain bearings - Dynamic adhesion test method for DLC coated parts under lubricated conditionstandard by International Organization for Standardization, 05/01/2022
standard by International Organization for Standardization, 05/01/2022
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.