Abstract: A synchronizer ring (10) having a support body (5), a conical friction surface (9), and a friction layer (14) of a material including carbon fibers applied to the friction surface (9). The material is a compacted carbon fiber reinforced plastic. A synchronizer ring of this type has a longer service life than those of the prior art, on account of the improved dimensional stability of the friction layer, and is inexpensive. Also disclosed is a method for producing the above-described synchronizer ring.

Abstract: A synchronizer ring (10) having a support body (5), a conical friction surface (9), and a friction layer (14) of a material including carbon fibers applied to the friction surface (9). The material is a compacted carbon fiber reinforced plastic. A synchronizer ring of this type has a longer service life than those of the prior art, on account of the improved dimensional stability of the friction layer, and is inexpensive. Also disclosed is a method for producing the above-described synchronizer ring.

Abstract: A copper-zinc alloy is particularly suitable for forming synchronizer rings. The novel alloy contains 55 to 75 wt. % copper, 0.1 to 8 wt. % aluminum, 0.3 to 3.5 wt. % iron, 0.5 to 8 wt. % manganese, 0 to less than 5 wt. % nickel, 0 to less than 0.1 wt. % lead, 0 to 3 wt. % tin, 0.3 to 5 wt. % silicon, 0 to less than 0.1 wt. % cobalt, 0 to less than 0.05 wt. % titanium, 0 to less than 0.02 phosphorus, unavoidable impurities and the remainder zinc.

Abstract: The invention describes a A synchronizer ring (10) having a support body (5), including a conical friction surface (9), and having a friction layer (14) of a material including carbon fibers applied to the friction surface (9). The material is a compacted carbon fiber reinforced plastic. A synchronizer ring of this type has a longer service life than those currently known on account of the improved dimensional stability of the friction layer, and is also inexpensive.

Abstract: A friction element has a base element on which a coating is applied by thermal spraying of a copper alloy. The copper alloy contains 27 to 35 wt % zinc, 4 to 6 wt % aluminum, 2 to 4 wt % nickel, 0.5 to 2 wt % titanium, and copper as the remainder, with random contaminants. The copper alloy is applied onto a base element by thermal spraying, and requires only a finish treatment by stamping to achieve good tribological properties and wear resistance that are comparable to molybdenum coatings. Alternative copper-zinc alloys can have, in particular, manganese, iron, and lead constituents.