ISO 4821:2022
Plain bearings — Dynamic adhesion test method for DLC coated parts under lubricated condition

Standard No.

ISO 4821:2022

Release Date

2022

Published By

International Organization for Standardization (ISO)

Latest

ISO 4821:2022

Scope

This document specifies a procedure to measure the adhesion s trength of diamond-like carbon (DLC ) coatings specified in ISO 20523 by detecting acous tic 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.

ISO 4821:2022 Referenced Document

• ISO 1101 Geometrical product specifications (GPS) - Geometrical tolerancing - Tolerances of form, orientation, location and run-out

ISO 4821:2022 history

• 2022 ISO 4821:2022 Plain bearings — Dynamic adhesion test method for DLC coated parts under lubricated condition