What material are ceramic brake pads made of?

Ceramic brake pads subvert the traditional concept of ceramic brake pads, ceramic brake pads are composed of ceramic fibers, iron-free filler substances, adhesives and a small amount of metal.

Ceramic brake pads are a kind of brake pads, many consumers will be mistaken for ceramic at first, in fact, ceramic brake pads are from the principle of metal ceramics rather than non-metallic ceramics, brake pads due to high speed braking, high temperature on the friction surface, according to measurement, can reach 800 ~ 900 degrees, and some even higher. At this high temperature, the surface of the brake pad will have a similar reaction of cermet sintering, so that the brake pad has good stability at this temperature. The traditional brake pads will not produce sintering reaction at this temperature, due to the sharp rise in surface temperature will melt the surface material and even produce air cushion, which will cause a sharp reduction in brake performance or brake loss after continuous braking.

Ceramic brake pad features:

Less dust on wheels; Long life of platters and pairs; No noise/no tremor/no disc damage. The specific performance is as follows:

(1) The biggest difference between ceramic brake pads and traditional brake pads is that there is no metal. The metal in the traditional brake pads is the main friction material, the braking force is large, but the wear is large, and the noise is easy to appear. After the installation of ceramic brake pads, in normal driving, there will be no abnormal noise (that is, scratching sound). Because the ceramic brake pads do not contain metal components, the metal noise of friction between the traditional metal brake pads and the dual parts (that is, the brake pads and the brake disc) is avoided.


(2) Stable friction coefficient. Friction coefficient is the most important performance index of any friction material, which is related to the braking ability of brake pads. In the braking process due to friction generated heat, the increase in working temperature, the general brake pad friction material is affected by temperature, the friction coefficient begins to decline. In practical applications, friction will be reduced, thus reducing the braking effect. The friction material of ordinary brake pads is not mature, and the friction coefficient is too high, resulting in unsafe factors such as direction loss, burning, and scratching of brake discs during braking. Even if the temperature of the brake disc reaches 650 degrees, the friction coefficient of the ceramic brake pad is still about 0.45-0.55, which can ensure that the vehicle has good braking performance.


(3) Ceramics have good thermal stability and low thermal conductivity, good wear resistance. The long-term use temperature is 1000 degrees, which makes the ceramic suitable for the high performance requirements of various high performance brake materials, and can meet the technical requirements of high speed, safety and high wear resistance of brake pads.


(4) It has good mechanical strength and physical properties. Able to withstand large pressure and shear force. Friction material products in the assembly before use, there is a need to drill, assembly and other mechanical processing, in order to make brake pad assembly. Therefore, it is required that the friction material must have sufficient mechanical strength to ensure that there is no damage and fragmentation during processing or use.


(5) Has a very low thermal attenuation. Whether it is the first generation of ceramic products of M09 or the fourth generation of ceramic brake pads of TD58, it can still ensure that the vehicle has good braking performance to ensure safety, and the phenomenon of thermal attenuation of the brake pads is very small.


(6) Improve the performance of brake pads. Because of the rapid heat dissipation of ceramic materials, its friction coefficient is higher than that of metal brake pads in the manufacture of brakes.


(7) Security. Brake pads will produce instantaneous high temperature when braking, especially at high speeds or emergency braking. At high temperatures, the friction coefficient of the friction sheet will decrease, which is called thermal decay. The low thermal decay of ordinary brake pads, the high temperature state and the brake oil temperature rise during emergency braking make the brake brake delay, and even the loss of braking effect low safety factor.


(8) Comfort. In the comfort indicators, owners are often most concerned about the noise of brake pads, in fact, noise is also a problem that ordinary brake pads have been unable to solve for a long time. Noise is generated by the abnormal friction between the friction plate and the friction disc, and the reasons for its production are very complex, braking force, brake disc temperature, vehicle speed and climate conditions may be the cause of noise.


In addition, the causes of noise in the three different stages of braking initiation, braking implementation and braking release are different. If the noise frequency is between 0 and 550Hz, the car will not be felt, but if it is more than 800Hz, the owner can obviously feel the brake noise.


(9) Excellent material characteristics. Ceramic brake pads using large particles of graphite/brass/advanced ceramics (non-asbestos) and semi-metal and other high-tech materials with high temperature resistance, wear resistance, brake stability, repair damage brake disc, environmental protection, no noise long service life and other advantages, to overcome the traditional brake pads on the material and process defects is currently the world's most sophisticated advanced ceramic brake pads. In addition, the ceramic slag ball content is low, the enhancement is good, and the dual wear and noise of the brake pads can be reduced.


(10) Long service life. The service life is an indicator that we are very concerned about, the service life of ordinary brake pads is below 60,000 kilometers, and the service life of ceramic brake pads is more than 100,000 kilometers. That is because the unique formula material used in ceramic brake pads is only 1 to 2 kinds of electrostatic powder, and the other materials are non-electrostatic materials, so that the powder will be taken away by the wind with the movement of the vehicle, and will not adhere to the wheel affect the beauty of the wheel. The life of ceramic material is more than 50% higher than that of ordinary semi-metal. After the use of ceramic brake pads, there will be no scratching (that is, scratches) on the brake disc, which extends the service life of the original car brake disc by 20%.