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Your search keyword '"Metallpulver"' showing total 2 results
Start Over Descriptor "Metallpulver" Topic reibung
2 results on '"Metallpulver"'

1. Abrasion resistance of blended polymers filled with metallic powders.

Author

Mahmoud, M. M. and Ali, W. Y.

Subjects
*ABRASION resistance, *POLYMERS, *METALLIC surfaces, *MECHANICAL wear, *FRICTION
Abstract

Friction and wear of polymeric composites formed by blending polyethylene (PE) and polymethylmethacrylate (PMMA) filled with different metallic powders is discussed in the present work. The scratch test was carried out to investigate wear resistance and friction coefficient of the tested composites prepared by molding of polymeric blends. Wear was measured by the net area of the cross section of the groove caused by the scratch and friction coefficient was measured as the ratio between the tangential and normal force exerted during scratch process. The test results showed that the best blend was 25 % polyethylene and 75 % polymethylmethacrylate with addition of bronze caused significant decrease in friction and wear. Increasing cooling rate of polymeric composites increased plasticization and consequently wear decreased. The strong adhesion of silicon carbide and bronze in the polymeric matrix caused significant wear decrease. [ABSTRACT FROM AUTHOR]

Published
2017
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2. Fundamental aspects of the compaction of metal powders

Author

Eduard Arzt and Fischmeister, H.

Subjects
Metallpulver, Reibung, ddc:620, Deformation
Abstract

The search for mathematical methods of predicting the increase in density of a metal powder during compaction has attracted numerous scientists, as it is both a technologically interesting and a scientifically challenging problem. This review outlines the way from simple curve fitting approaches to first attempts at constructing physical models which might form a rational basis for the improvement of powder compactibility or compaction procedures. The models described range from considerations of the deformation of a single spherical pore to reasoning in terms of the deformation behaviour of spherical particles in regular and - more recently - random packings. This paper will not deal with the way in which friction affects the distribution of pressure and density in a compact, nor with the effects of lubricants.

Published
1979
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