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TECHNICAL PAPERS

Characterization of Pelletized MoS2 Powder Particle Detachment Process

[+] Author and Article Information
C. Fred Higgs, Hooshang Heshmat

Mohawk Innovative Technology, Inc., 1037 Watervliet-Shaker Road, Albany, NY 12205

J. Tribol 123(3), 455-461 (Mar 30, 2000) (7 pages) doi:10.1115/1.1310158 History: Received May 27, 1999; Revised March 30, 2000
Copyright © 2001 by ASME
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References

Figures

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Variables affecting powder flow behavior and powder properties
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Tribometer for testing powder pellets
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Wear data under lubricated conditions at a constant speed of U=4.5 m/s,Ta=RT, for compacted MoS2 on TiC disk
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Friction data under lubricated conditions at a constant speed of N=500 rpm (4.5 m/s), Ta=RT, for compacted MoS2 on TiC disk
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Friction data under lubricated conditions at a constant speed of N=500 rpm (4.5 m/s), Ta=RT, for compacted MoS2 on TiC disk
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Wear data under lubricated conditions at a constant speed of U=4.5 m/s,Ta=RT, for compacted MoS2 on TiC disk
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Friction data under lubricated conditions at a constant speed of N=500 rpm (4.5 m/s), Ta=RT, for compacted MoS2 on TiC disk
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Friction data under lubricated conditions at a constant speed of N=500 rpm (4.5 m/s), Ta=RT, for compacted MoS2 on TiC disk
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Photomicrograph of powder C before and after testing: (a) micrograph of sample C before compaction (2000×); (b) micrograph of sample C wear debris compacted to 34.5 MPa (5 ksi) after wear (2000×) [σyy=3.45×104 kPa;Wn=8.9 N (2 lb); U=3 m/s]
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Friction coefficient versus Sommerfeld number: friction coefficient of MoS2 pellet versus non-dimensional load and speed parameter sample C, σyy=5 Ksi,Wn=1.1 kg t26r1
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Mapping of starting friction after various rest periods: frictional behavior of pelletized MoS2 as a function of rest duration between tests

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