Surface Chemistry of Aluminium Alloy Slid against Steel Lubricated by Organic Friction Modifier in Hydrocarbon Oil

Table 2

Properties and composition of tribo-material.

Material

Hardness

Surface roughness, Ra μm

Contents of element, mass%

Block

Cylinder

Fe

Cu

Al

C

Si

Mn

Cr

Pb

Sn

Steel

HRC 60

—

<0.10

Balance

4.6

0.47

<0.5

1.5

Aluminium alloy

HV 47.8

1.4–2.3

—

0.48

Balance

3.2

0.48

3.1