Friction and Wear Characteristics of TiN Coated Vane for the Rotary Compressor in a R410A Refrigerant©

A Review on Sliding Vane and Rolling Piston Compressors

“…This causes the vane to eventually tilt and further aggravate wear [156]. To reduce wear, the use of material coatings such as titanium nitride (TiN) [144,157] or tungsten carbide [158] on the vane was proposed.…”

Theoretical and experimental study of a novel compressor

“…They found that a large amount of CO2 dissolved in the PAG oil than in the POE oil which led to the PAG oil having better lubricity due to the improvement in its viscosity-temperature characteristics. In a study by Se-Doo et al [33], TiN coated vanes were reported to have improved wear resistance in the compressor environment where the refrigerant is dissolved in oil. In a study by Zin et al [34], the addition of graphene-based nanostructures in PAG oil was found to decrease the friction coefficient by about 18% compared to the same while using raw oil.…”

Development of an oil-free swing vane compressor with liquid refrigerant injection

“…Tribology analysis has been conducted to understand how vane tip wears off [30,31]. Various lubrications and surface coatings have also been tested on vane surfaces in order to improve the tribological characteristics and the compressor's mechanical efficiency [32][33][34]. Ooi et al [29] have studied the effect of vane spring stiffness on rolling piston compressor and found that low vane tip-piston contact force may lead to higher piston-cylinder and piston-eccentric frictional losses due to an increase in the angular speed of the piston.…”