Friction pair
To provide a friction couple having an enhanced effect and stability in a low speed range, where the friction couple has a disc brake pad having a friction material manufactured from a friction material composition having a binder, a fiber base, and a friction modifier, without containing a copper component and a ferrous metallic fiber, and a stainless steel disc rotor. The present invention uses a friction material composition containing 20-30 weight % of a titanate relative to an entire friction material composition as an inorganic friction modifier without containing an inorganic friction modifier that has a Mohs hardness of 4 or less and is cleavable. The above-explained titanate is preferably a layer crystal structure lithium potassium titanate.
1. A friction couple comprising:
a disc brake pad including a friction material manufactured from a friction material composition comprising a binder, a fiber base, and a friction modifier, wherein the friction material composition is free of both a copper component and a ferrous metallic fiber; and
a stainless steel disc rotor,
wherein the friction material composition contains 20-30 weight % of a titanate, relative to an entire friction material composition as an inorganic friction modifier, and
wherein the friction material composition does not include any friction modifier having a Mohs hardness of 4 or less and being cleavable.
2. The friction couple according to claim 1 ,
wherein the titanate has a layer crystal structure.
3. The friction couple according to claim 2 ,
wherein the friction modifier is a mica or a vermiculate.
4. The friction couple according to claim 1 ,
wherein the titanate is a lithium potassium titanate.
5. The friction couple according to claim 4 ,
wherein the friction modifier is a mica or a vermiculate.
6. The friction couple according to claim 1 ,
wherein the friction modifier is a mica or a vermiculate.