Effect of Relative Humidity on the Tribological Properties of Self-Lubricating H₃BO₃ Films Formed on the Surface of Steel Suitable for Biomedical Applications

Table 2

Hardness and Young’s modulus profiles for borided AISI 316L steel.

Distance from surface (µm)	Hardness (MPa)	Young’s modulus (GPa)
10	24085.1 ± 1220.2	444.75 ± 37.1
25	23150.4 ± 2345.3	413.23 ± 32.2
35	20387.5 ± 1123.8	377.67 ± 28.4
45	7187.8 ± 632.3	315.56 ± 29.3
60	4377.9 ± 545.2	230.20 ± 21.6
70	3520.4 ± 254.1	235.40 ± 20.4
80	2500.5 ± 198.4	224.80 ± 19.2
90	2512.6 ± 212.1	227.01 ± 19.7
100	2489.3 ± 206.4	227.01 ± 18.2
120	2520.2 ± 184.2	227.01 ± 19.1