Effect of Size of Carbon Fiber on the Wear of PTFE Composites and Aluminum Alloy Counter Face

Abstract

PTFE was reinforced with PAN-based, Pitch-based (carbonized and graphitized) carbon fibers and vapor-grown carbon fibers and their tribological properties were examined. Aluminum alloy was used as the counter face material. The wear rate of PTFE was only reduced by the vapor-grown carbon fiber and the composite filled with the vapor-grown carbon fiber caused minimum wear amount of the aluminum alloy counter face. Aluminum alloy was easily abraded by the carbon fibers other than vapor-grown carbon fibers, and then the abraded rough surface promoted the wear of PTFE composites. There was a correlation between the abrasiveness of carbon fiber and the cylindrical surface area of carbon fiber.

Tribological Performance of Natural Resin Urushi Containing Graphite under Dry and Water Lubricated Conditions

“…The evaluation of wettability is very important because Si-DLC [10], for example, exhibits low friction owing to the bound water molecules. Figure 6 shows the contact angle of pure water on the surface.…”

“…Typical hard materials include diamond-like carbon [1][2][3] and ceramics, such as silicon nitride [4,5]. In contrast, resin materials are widely used as soft materials [6][7][8][9][10]. This material has the advantages of high moldability and light weight compared to metals, such as bearing materials.…”