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Wear properties of alumina/aluminum composites with interpenetrating networks

Sternitzke, Martin and Knechtel, Mathias and Hoffman, Mark and Broszeit, Erhard and Rödel, Jürgen (1996):
Wear properties of alumina/aluminum composites with interpenetrating networks.
In: Journal of the American Ceramic Society, pp. 121-128, 79, (1), [Online-Edition: http://dx.doi.org/10.1111/j.1151-2916.1996.tb07889.x],
[Article]

Abstract

The tribological behavior of an Al2O3/Al composite against a steel and an alumina was investigated in pin-on-disk wear tests using unlubricated conditions in air, Various composite compositions of aluminum contents ranging from 0 to 28 vol% mere investigated over a variety of contact loads and sliding speeds, Wear rate and friction force were continuously monitored during testing, Following completion of the test, pin weight loss and the profile of the wear tracks were determined, Scanning electron microscopy accompanied by EDAX analysis was used to investigate the worn surfaces and the wear debris, The wear behavior of the composites with a low metal content (<15%) during sliding against steel and alumina was found to be comparable to the wear of pure alumina, Wear occurred either on the steel or apparently simultaneously on the pin and alumina disk, With higher Al contents, wear shifts to the composite, the wear rate increases abruptly and is accompanied by fracture of the Al2O3 matrix, Wear appears to occur in the composite when the mechanical strain in the composite, near the contact surface, as a result of frictional loads, exceeds the fracture strain of the alumina matrix.

Item Type: Article
Erschienen: 1996
Creators: Sternitzke, Martin and Knechtel, Mathias and Hoffman, Mark and Broszeit, Erhard and Rödel, Jürgen
Title: Wear properties of alumina/aluminum composites with interpenetrating networks
Language: English
Abstract:

The tribological behavior of an Al2O3/Al composite against a steel and an alumina was investigated in pin-on-disk wear tests using unlubricated conditions in air, Various composite compositions of aluminum contents ranging from 0 to 28 vol% mere investigated over a variety of contact loads and sliding speeds, Wear rate and friction force were continuously monitored during testing, Following completion of the test, pin weight loss and the profile of the wear tracks were determined, Scanning electron microscopy accompanied by EDAX analysis was used to investigate the worn surfaces and the wear debris, The wear behavior of the composites with a low metal content (<15%) during sliding against steel and alumina was found to be comparable to the wear of pure alumina, Wear occurred either on the steel or apparently simultaneously on the pin and alumina disk, With higher Al contents, wear shifts to the composite, the wear rate increases abruptly and is accompanied by fracture of the Al2O3 matrix, Wear appears to occur in the composite when the mechanical strain in the composite, near the contact surface, as a result of frictional loads, exceeds the fracture strain of the alumina matrix.

Journal or Publication Title: Journal of the American Ceramic Society
Volume: 79
Number: 1
Uncontrolled Keywords: PARTICLE COMPOSITES; METAL; FRACTURE; ALLOYS; AL
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
11 Department of Materials and Earth Sciences > Fachbereich Materialwissenschaft (1999 aufgegangen in 11 Fachbereich Material- und Geowissenschaften)
Date Deposited: 19 Nov 2008 16:00
Official URL: http://dx.doi.org/10.1111/j.1151-2916.1996.tb07889.x
Identification Number: doi:10.1111/j.1151-2916.1996.tb07889.x
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