Research Article

Comparative Experimental Study of Tribo-Mechanical Performance of Low-Temperature PVD Based TiN Coated PRCL Systems for Diesel Engine

Table 6

Surface roughness of cylinder liner samples before and after coating.

Coating Thickness (μm)Fine Samples Surface Roughness Before Coating Ra(μm)Fine Samples Surface Roughness After Coating Ra(μm)Rough Samples Surface Roughness Before Coating Ra(μm)Rough Samples Surface Roughness After Coating Ra(μm)

1.9200.210.190.410.40
3.5230.220.180.390.36
5.1200.230.180.420.37