Tribology of Coated 316L SS by Various Nanoparticles
Table 5
Comparison of the coefficient of friction between 316L SS substrates and various coating materials (Ta, Nb, and V) at different sputtering times (1, 2, and 3 hours) using Tukey’s post hoc tests.
Dependent variables
Independent variables
Mean difference
Sig.
Nb
SS
Nb1
0.190
0.017
Nb2
0.223
0.007
Nb3
0.223
0.007
Nb1
Nb2
0.033
0.895
Nb3
0.033
0.895
Nb2
Nb3
0.000
1.000
Ta
SS
Ta1
0.177
0.008
Ta2
0.177
0.008
Ta3
0.177
0.008
Ta1
Ta2
0.000
1.000
Ta3
0.000
1.000
Ta2
Ta3
0.000
1.000
V
SS
V1
−0.013
0.993
V2
−0.040
0.863
V3
−0.090
0.362
V1
V2
−0.027
0.953
V3
−0.077
0.486
V2
V3
−0.050
0.770
1 hr
SS
Nb
0.223
0.012
Ta
0.177
0.041
V
−0.013
0.994
Nb
Ta
−0.047
0.813
V
−0.237
0.009
Ta
V
−0.190
0.029
2 hrs
SS
Nb
0.190
0.006
Ta
0.0177
0.009
V
−0.040
0.752
Nb
Ta
−0.013
0.986
V
−0.230
0.002
Ta
V
−0.217
0.003
3 hrs
SS
Nb
0.223
0.005
Ta
0.0177
0.019
V
−0.090
0.265
Nb
Ta
−0.047
0.735
V
−0.313
0.001
Ta
V
−0.267
0.002
The mean difference is significant at the 0.05 level.