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  • BSI
    21/30419771 DC BS ISO 4821. Plain bearings. Dynamic adhesion test method for DLC coated parts under lubricated condition
    Edition: 2021
    $44.66
    / user per year

Description of 21/30419771 DC 2021

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.



Standard Number21/30419771 DC
TitleBS ISO 4821. Plain bearings. Dynamic adhesion test method for DLC coated parts under lubricated condition
StatusDefinitive
Publication Date2021-05-11
Identical National Standard OfISO/DIS 4821
DescriptorsBearings, Plain bearings, Surface properties, Adhesion, Lubricating system components, Mechanical components
ICS21.100.10 Plain bearings
CommitteeMCE/12
PublisherBSI
Pages21

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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