Material with enhanced sliding friction
AssigneesCompagnie Generale Des Etablissements Michelin, Lehigh University, Cornell University
InventorsNichole Moyle, Florian Bremond, Chung Yuen Hui, Haibin Wu, Anand Jagota, Constantine Khripin
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Abstract
An article of manufacture comprising: (a) a body at least a portion of which is a multi-phase material (MPM) defining a traction surface; (b) the MPM comprising at least first and second zones comprising first and second materials, M1, M2, respectively, at or near the traction surface, the M1 and M2 having first and second Young moduli respectively, the first and second moduli differing by at least a factor of 3; and (c) wherein each of the second zones has a center, and wherein the second zones have a center-to-center radial distribution function having a peak at between 10 μm and 10 mm.
Claims22
An article of manufacture comprising:
- a body at least a portion of which is a multi-phase material (MPM) defining a traction surface;
- said MPM comprising at least first and second zones comprising first and second materials, M1, M2, respectively, at or near said traction surface, said M1 and M2 having first and second Young moduli respectively, said first and second moduli differing by at least a factor of 3, wherein said first modulus is greater than said second modulus, and wherein said at least first and second zones comprise said second zones disposed as islands within a matrix of said M1, wherein x and y represent the fraction of surface area of said traction surface occupied by said M1 and M2, respectively, and wherein each of said MPM, M1, and M2 has a sliding friction, fMPM, fM1, fM2, wherein the sliding frictions correspond to an enhancement ratio
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- wherein Enh.R>1;
- and
- wherein each of said second zones has a center, and wherein said second zones have a center-to-center radial distribution function having a peak at between 10 μm and 1 mm.
A method of preparing a multi-phase material (MPM) having a traction surface, said method comprising:
- combining at least a first material M1 with a second material M2 to form at least first and second zones, respectively, at or near said traction surface, said M1 and M2 having first and second Young moduli respectively, said first and second moduli differing by at least a factor of 3, wherein said first modulus is greater than said second modulus, and wherein said at least first and second zones comprise said second zones disposed as islands within a matrix of said M1, wherein x and y represent the fraction of surface area of said traction surface occupied by said M1 and M2, respectively, and wherein each of said MPM, M1, and M2 has a sliding friction, fMPM, fM1, fM2, wherein the sliding frictions correspond to an enhancement ratio
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- .
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- wherein Enh.R>1;
- and
- wherein each of said second zones has a center, and wherein said second zones have a center-to-center radial distribution function having a peak at between 1 μm and 10 mm.
Dependencies are inferred from the claim text.