Friction material and process for the production thereof
AssigneesRimsa Metal Technology, Itri Limited
InventorsJeremy Arthur Pearce, Stephen John Glynn
Life of this patent
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Abstract
A process for the in-situ formation of a lubricating phase comprising sulphur and tin in a friction material, wherein reaction of a sulphur source with a tin source in said friction material results in the formation of said lubricating phase, and wherein said reaction is initiated or effected by heat resulting, in use, from the generation of friction, wherein said sulphur source is selected from one or both of sulphur and/or a metal sulphide selected from one or more of iron, copper, zinc, titanium and bismuth, and wherein said tin source is selected from one or more of tin, a tin-containing compound and/or a tin-containing alloy.
Claims24
A process for the in-situ formation of a lubricating phase comprising sulphur and tin in a friction material, wherein reaction of a sulphur source with a tin source in said friction material results in the formation of said lubricating phase, and wherein said reaction is initiated or effected by heat resulting, in use, from the generation of friction, wherein said sulphur source is selected from one or both of sulphur and/or a metal sulphide selected from one or more of iron, copper, zinc, titanium and bismuth, and wherein said tin source is selected from one or more of tin, a tin-containing compound and/or a tin-containing alloy.
A process for manufacturing a friction material for a friction element, the process comprising:
- incorporating a sulphur source and a tin source into the friction element;
- wherein the sulphur source is selected from the group consisting of sulphur, iron sulphide, copper sulphide, zinc sulphide, titanium sulphide, and combinations thereof;
- wherein the tin source is selected from the group consisting of tin, a tin-containing compound, a tin-containing alloy, and combinations thereof;
- wherein the sulphur source and the tin source are adapted to react with each other to form a lubricating phase upon exposure to heat resulting from the generation of friction.
Dependencies are inferred from the claim text.