Sintered-Metal Friction Materials
Sintered-metal friction materials are produced from a mixture of metallic and nonmetallic powders and have quite complex compositions. They must contain a matrix or binder alloy, which is either copper or iron base and a friction agent. In addition they may contain solid lubricants, wear-resistant agents, and fillers. The powder mixture is cold-compacted at a pressure of 12–18 tsi. The compacts are usually sintered under pressure and simultaneously bonded to a steel backing. The various types of friction materials for dry and wet friction, for dynamic and static, and for mild and severe applications are described. Friction materials are evaluated by determining such characteristics as dynamic and static coefficients of friction, the ratio of these coefficients, energy capacity and durability, wear behavior, fabricability, and cost.
KeywordsMolybdenum Disulfide Friction Material Friction Compound Static Coefficient Metal Powder Industry Federation
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