BALINIT MILUBIAHydrogen-free ta-C to withstand extreme tribological conditions

BALINIT MILUBIA coating for rotary pumps
BALINIT MILUBIA coating for pneumatic valves

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.

  • Advantages


    BALINIT® MILUBIA – specifically developed for the demands of components:

    • Microstructure coating hardness 35-50 HIT(GPa)
    • Perfectly suited for seal discs, spool valves, ceramic shafts and pump bearings
    • Constantly low operating force on ceramic seal discs when assembly grease is washed away after long period of use
    • Low friction even in dry running keeps operating temperature of seal rings and discs low
    • Suitable for metals and electrically insulating materials such as ceramics or plastics
    • Low coating temperature (< 100 °C) enables coating of heat-sensitive materials
  • Specifications


    Coating material ta-C
    Coating structure 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
    Coating 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.
    **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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