Volume 18 of the ASM handbook series provides professional insight on the tribological properties of materials, methods of laboratory testing and analysis, the materials selection process, and field diagnosis of tribology problems.

Tribological experiments were performed using a standard four-ball tribometer.

An increased interest in using PAs in tribological application is due to its high mechanical strength and structural integrity.

For example, it has high adherent strength to substrate, high hardness and thickness, high corrosion resistance, high wear resistance, low environment pollution, relatively low cost, and outstanding tribological performance because of its exceptional oil retention ability [H, 12].

The main tribological surface characteristics influencing the speed regularity of USM in steady regimen are macro- and microasperities and friction coefficient fluctuations between rotor surface and friction element.

"It can replace even high-temperature polymers in tribological applications.

Graphene has recently attracted extensive attention because of its excellent properties, such as high thermal conductivity, high young's modulus, large specific surface area, and outstanding tribological properties [1-4].

This study focuses on mechanical and tribological properties (within 0.2-400 mN of load) of 100-nm thick alumina films deposited on Si(100).

[11] investigated tribological properties of POM composites with short aramid fiber (ASF) and PTFE.