Surface Effect of a PEO Coating on Friction at Different Sliding Velocities University of Windsor

Format:

Conference/Event

Author/Creator:

Wang, Wang, author.

Contributor:

Nie, Xueyuan

Tjong, Jimi

Conference Name:

SAE 2015 World Congress & Exhibition (2015-04-21 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2015

Summary:

AbstractIn order to reduce the weight of an automotive engine, an aluminum (Al) alloy engine block with cast iron liner has been successfully used to replace the gray cast iron engine. For newly emerging Al linerless engine in which the low surface hardness of the aluminum alloy has to be overcome, a few surface processing technologies are used to protect the surface of cylinders. Among them, plasma transferred wire arc (PTWA) thermal spraying coating is becoming popular. Plasma electrolytic oxidation (PEO) coating is also proposed for increasing the wear resistance of aluminum alloy and reducing the friction between the cylinder and piston. In this work, a PEO coating with a thickness of 20 μm was prepared, and a high speed pin-on-disc tribometer was used to study the tribological behavior of the coating at oil lubricant conditions. Different surface roughness of the coating and a large range of the sliding speeds were employed for the tests. The coefficient of friction (COF) vs surface roughness and sliding speed were particularly studied. The results show that the COF significantly decreased with the increase of sliding speed, and a smoother coating surface had a lower COF

Notes:

Vendor supplied data

Publisher Number:

2015-01-0687

Access Restriction:

Restricted for use by site license