BS ISO 4821. Plain bearings. Dynamic adhesion test method for DLC coated parts under lubricated condition
|Standard number:||21/30419771 DC|
|Status:||Draft for Comment|
This standard 21/30419771 DC BS ISO 4821. Plain bearings. Dynamic adhesion test method for DLC coated parts under lubricated condition is classified in these ICS categories:
- 21.100.10 Plain bearings
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.
The positioning of this test method in the process of parts evaluation performed by automobile manufacturers is shown in Annex A, and the correlation between results obtained by the test method specified in this document and results obtained by the test method using conventional engine parts is described in Annex B.