Friction and wear measurement at high loads and temperatures

High load tribometer with up to 1000°C heating chamber.
© Fraunhofer IST
High load tribometer with up to 1000°C heating chamber.

High-load and high-temperature tribometer (DIN 50324-07, ASTM G99-05, ISO 18535)

Tribometers are used to investigate the friction and wear behavior of material pairings. A test material (e.g. a steel ball) is rubbed over the sample with a defined standard force in a linear oscillating manner or along a circular path (pin-on-disk). The coefficient of friction (friction force/normal force) is measured throughout the test. The wear is determined by subsequent profilometric measurement of the wear track.

Test according to DIN 50324-1992-07, ASTM G99-05

The Fraunhofer IST has special high-temperature tribometers for test temperatures up to 1000 °C as well as high-load tribometers with normal forces in the range from 10 to 1000 N. In addition, a rolling tribometer is available in which the tribological loading of two cylinders rolling against each other (rolling friction/rolling wear) can be simulated. Investigations using liquid lubricants can also be undertaken.

Temperature-dependent coefficients of friction against steel

Friction value comparison of uncoated steel and a TiAlN or a TiAlCrSiN coating in air at T = 20 °C, 530 °C, 730 °C and 930 °C.
© Fraunhofer IST

Friction value comparison of uncoated steel and a TiAlN or a TiAlCrSiN coating in air at T = 20 °C, 530 °C, 730 °C and 930 °C.

Temperature-dependent friction values against TiAlV

Friction value comparison of different materials and coatings against TiAl6V4 at 500 °C, 700 °C and 900 °C.
© Fraunhofer IST

Friction value comparison of different materials and coatings against TiAl6V4 at 500 °C, 700 °C and 900 °C.

More information on our expertise in friction and wear measurement with high-load and high-temperature tribometers

 

Expertise Tribology

Application-related surface modification

 

From research

Surface-layer treatment of high-temperature materials