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Hydrogen-free DLC for High Temperature Applications

16 May 2016

Ionbond will present Tribobond 48 ta-C, a newly developed DLC coating for engine and injection system components exposed to temperatures up to 400 °C.

Compared to conventional hydrogen-containing DLC (a-C:H) coatings that have been used for many years, Tribobond 48 ta-C exhibits an increased hardness of HV 0.05 >5000 and a comparably low coefficient of friction of 0.2 (under dry conditions). The new coating is typically deposited with a thickness of less than 1.5µm.

Tribobond 48 ta-C is used in high load assemblies where service temperatures exceed 300 °C and / or where increased wettability with oils, gasoline and diesel fuels is required. In combination with specifically formulated oils, the friction losses of two sliding surfaces can be further reduced by a factor of 2, compared with conventional DLC lubricated with standard oils. The abrasive wear resistance is up to fifty times higher when used at temperatures of 200 - 400 °C, compared to surfaces coated with hydrogenated DLC.

The new coating is available for high-volume production from the Ionbond automotive competence centre in Venlo NL.

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