Tribological studies of epoxy and its composite coatings on steel in dry and lubricated sliding,(Tribology – Materials,Surfaces & Interfaces 2015 Vol. 9,No. 3,page 144–153)

The above paper carries several mechanical properties of epoxy and the fabricated composites. Some errors had crept in inadvertently which the authors regret and would like to correct. The corrected data or units as shown in Table 1 and 2 should be used in any follow up work.

(1) Location of the error in the paper: Page-145, column-2, line-12 to 20 and line 30:

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Table 1

Mechanical Properties of Epoxy and Its Composites

Property	Material	Currently published data value	Corrected data value or unit
Tensile Strength (MPa)	Epoxy/Graphene (10 wt-%)	34 ±3	47.1 ± 0.7
	Epoxy/graphite (10 wt-%)	27 ± 2.3	31.8 ± 4.9
Young's Modulus (MPa) (measured in tension)	Epoxy/Graphene (10 wt-%)	853± 31	No change
	Epoxy/graphite (10 wt-%)	847 ± 33.5	755 ± 23
Hardness	Epoxy	2.16 ± 0.27 GPa	216 ± 27 MPa
	Epoxy/Graphene (10 wt-%)	2.35 ± 0.18 MPa	235 ± 18 MPa
	Epoxy/graphite (10 wt-%)	2.33 ± 0.14 MPa	233 ± 14 MPa

(2) Location of the error in the paper: Page-152, column-1, Conclusion section, line-9 to 13:

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Table 2

Percentage Change in Young's Modulus and Hardness

Property	Material	Currently published data value	Corrected data value
Young's Modulus (% change)	Epoxy/Graphene	14	4.5
	Epoxy/graphite	22	7.4
Hardness (% change)	Epoxy/Graphene	13	9.3
	Epoxy/graphite	12	8.4