Research Article

An Investigation on Tribological Properties and Lubrication Mechanism of Graphite Nanoparticles as Vegetable Based Oil Additive

Table 3

The basic composition and mechanical properties of friction pairs.

PropertiesPinDisk

MaterialYG8 cemented carbideTi-6Al-4V titanium alloy
Composition92% WC + 8% Co90% Ti + 6% Al + 4% V
Density (@20°C)/(g/cm3)14.5~14.94.5
Hardness89~90 HRA290~356 HV
Elastic modulus/(GPa)600~610 109