Accession Number : ADA304475

Title :   Micromechanism of Wear at Polymer-Metal Sliding Interface.

Descriptive Note : Doctoral thesis,

Corporate Author : IOWA STATE UNIV AMES DEPT OF MECHANICAL ENGINEERING

Personal Author(s) : Kar, Malay K.

PDF Url : ADA304475

Report Date : 1978

Pagination or Media Count : 129

Abstract : The understanding of the mechanisms governing the wear of polymers sliding against metal surfaces is important from both scientific and technological standpoints. This is especially true since polymeric materials are being used more and more in sliding applications, such as bearings, friction blocks and brake devices. Four basic mechanisms of wear are commonly recognized: adhesive, abrasive, corrosive, and wear from surface fatigue. Of these adhesive and abrasive wear mechanisms have often been used to explain the wear of polymeric materials. Adhesive wear arises from the fracture of adhesively-bonded junctions that occurs because of the relative motion between the mating surfaces. Rabinowic: and Tabor (1) studied the mechanism of adhesive-wear particle formation for several sliding metallic pairs. Burwell and Strang (2) and Archard (3) developed identical expressions for wear volume in an adhesive process. Archard and Hirst (4) studied adhesive wear for polymer-metal pairs and pointed out that the wear equation derived earlier by Archard (3) could be applied to these pairs too. Belyi et al. (5) noted that the transfer of materials is the most important characteristic of adhesive wear in polymers. The abrasive wear is produced as a result of deformation or ploughing of the softer polymer by harder asperities on the mating surface. This type of wear has been studied in detail by a number of workers (6-10). ... jg p20

Descriptors :   *METALS, *INTERFACES, *POLYMERS, *WEAR, *SLIDING, CORROSION, COMPOSITE MATERIALS, DEFORMATION, MOTION, THESES, SURFACES, FATIGUE(MECHANICS), BEARINGS, TRANSFER, BRAKES, ADHESIVES, SLIDING FRICTION, ABRASION.

Subject Categories : Polymer Chemistry
      Properties of Metals and Alloys
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE