- Pin on disc tribometer
A pin on disc tribometer is the standard equipment used to determine the sliding
friction coefficient andwear resistance of surfaces. The tester consists of a stationary "pin" under an applied load in contact with a rotating disc.Either the pin or the disc can be wear- and friction-tested using the pin on disc tester. The pin is usually a sphere however it may be any geometry that simulates the actual application counter surface. [cite web
url=http://www.micromaterials.co.uk/Pin-on-Disk...htm
title=Pin-on-Disk Testing
accessdate=2008-01-09]A load cell attached to the pin on disc tester is used to measure the evolution of the friction coefficient with sliding distance. [cite web
url=http://www.koehlerinstrument.com/products/K93500.html
title=K93500 Pin-On-Disc Tester
accessdate=2008-01-09] Sliding wear of the disc can be measured after the pin on disc test using a simple piece of equipment called aCalo tester .The pin on disc test has proved particularly useful in providing a simple
wear andfriction test for low frictioncoatings on machine components, such as thevalve train , particularly inmotor sport s. These components are now coated with lowfriction coatings such asdiamond-like carbon to reduceenergy losses and the requirement forlubricant .See also
*
Scratch tester , coating adhesion tester
*Calo tester , coating thickness testerReferences
* [http://www.pvd-coatings.co.uk/pin-on-disc-tester.htm Pin on disc tester]
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