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BALINIT MILUBIA coating for rotary pumps

Components of devices such as ceramic seal discs in taps, pneumatic valves, ceramic shafts and pump bearings are exposed to extreme operating forces over a long period of time. To keep these devices running reliably for longer, it is imperative to protect their components from wear under high operating forces at elevated temperatures. The ta-C structured hydrogen-free hard carbon coating BALINIT® MILUBIA meets these requirements even in dry running when other coatings have reached their limits.

BALINIT® MILUBIA is extremely hard and has a very low coefficient of friction. Due to the low coating temperature (< 100 °C) it can even be applied to components made from heat-sensitive materials, such as steels tempered at low temperatures, aluminum alloys and even plastics.

Coating material ta-C
Coating technology Filtered Arc
Coating colour black
Coating hardness HIT [GPa]* 35 - 50
Coefficient of friction (dry) vs. steel** 0.1 - 0.2
Max. service temp. [°C]**** 450
Process temperature [°C] < 100
Typical coating thickness [µm] 0.5 – 2
General remark All given data are approximate values, they depend on application, environment and test condition.
*Coating hardness HIT [GPa] Measured by nano indentation according to ISO 14577. For multilayers the hardness of the different layers varies. Hardness can be adapted to the application.
**Coefficient of friction (dry) vs. steel Determined by ball-on-disc test in dry condition with an Steel ball according to ASTM G99. During run-in the given values may be exceeded.
****Max. service temp. [°C] These are approximate values out of the field. Due to thermodynamic laws there is a dependency of pressure in application.

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