Method for producing a mechanically and preferably machined cast iron or grey cast iron surface, in particular on a brake disc, with increased wear and corrosion resistance, characterized in that said surface is subjected to a water jet treatment—usually according to the so-called fluid jet process, which is adjusted so that it completely or at least partially clears the cavities opened by the machining, which contain a graphite inclusion surrounded by the basic structure, so that in the latter case the level of the graphite inclusion lies below the outer surface of the basic structure surrounding the cavity, whereupon a diffusion layer is applied by nitrocarburizing and an oxide layer is applied on the diffusion layer.

A process for manufacturing a friction component made of composite material, includes the densification of a fibrous preform of carbon yarns by a matrix including at least pyrocarbon and at least one ZrO.sub.xC.sub.y phase, where 1≤x≤2 and 0≤y≤1, the matrix being formed by chemical vapor infiltration at least from a first gaseous precursor of pyrocarbon and a second gaseous precursor including zirconium, the second precursor being an alcohol or a C.sub.1 to C.sub.6 polyalcohol modified by linking the oxygen atom of at least one alcohol function to a group of formula —Zr—R.sub.3, the substituents R being identical or different, and R being selected from: —H, C.sub.1 to C.sub.5 carbon chains and halogen atoms.

A brake dust particle filter for an assembly with a brake disc is provided with a ring section-shaped housing that at least partially surrounds the brake disc in a mounted state. The housing has a housing interior. The housing is made of a metal material. The housing interior has a lowermost point and has at the lowermost point an axially embodied drainage cutout for drainage of a fluid out of the housing interior. The housing has an outwardly positioned, mostly axially expanding guide arranged at the drainage cutout for guiding the fluid. An assembly with a brake disc and a brake caliper arranged at the brake disc is provided with such a brake dust particle filter that is arranged at least partially in a bottom region of the brake disc.

Example embodiments relate to alloys having high corrosion resistance and high wear resistance. In particular, example embodiments relate to an iron-based alloy including 20 wt % to 50 wt % Cr; 0 wt % to 15 wt % Mo; 0 wt % to 15 wt % W; 3 wt % to 6 wt % B; and a balance of iron and impurities. In example embodiments, the pitting resistance equivalent number (PREN) is greater than 30 at 1300 K under substantially equilibrium solidification conditions. In example embodiments, the mole fraction of a hard phase of the alloy is between 45% and 80% at 1300K under substantially equilibrium solidification conditions. The liquidus of the alloy may be less than 2000K under substantially equilibrium solidification conditions.

A braking band extends between an inner diameter and an outer diameter. The braking band has two plates having inner surfaces delimiting a gap, outer surfaces having opposite flat circumferential portions and a plate body having an extension in axial direction. The plates are joined by connecting elements. At least one plate has at least one projection projecting into the gap without reaching the opposite plate, forming a localized narrowing of the gap and a thickening of the plate body, creating a localized increase of the thickness of plate. The projection extends from a first connecting element to an adjacent connecting element, connecting them, and along the circumferential direction, connecting at least two adjacent connecting elements. A group of projections extends circumferentially along a discontinuous annular path, avoiding a uniform distribution in circumferential direction.

A brake rotor, includes at least one friction element and one adapter element, wherein the brake rotor is configured to rotate about an axis of rotation, wherein the friction element has at least one friction surface and one connection region, wherein the adapter element has an installation region and a transfer region, wherein the installation region is configured for fixing the brake rotor to a hub, wherein the connection region indirectly or directly engages in positively locking fashion in a circumferential direction with the transfer region such that a torque about the axis of rotation can be transferred between the connection region and the transfer region from the friction element to the adapter element.

A brake disc includes a friction ring consisting at least partially of a first material and a brake rotor hat consisting at least partially of a second material that is different from the first material. The friction ring includes a flange formed in the axial direction, wherein the flange is connected to the brake rotor hat by means of at least one connection element. An intermediate piece is provided between the surface of the brake rotor hat in contact with the connection element and the connection element. In this way, a stable mechanical connection is created between the flange of the friction ring and the brake rotor hat.

A brake disc includes a friction ring consisting at least partially of a first material and a brake rotor hat consisting at least partially of a second material that is different from the first material. The friction ring includes a flange formed in the axial direction, wherein the flange is connected to the brake rotor hat by means of at least one connection element. An intermediate piece is provided between the surface of the brake rotor hat in contact with the connection element and the connection element. In this way, a stable mechanical connection is created between the flange of the friction ring and the brake rotor hat.

A brake disk including carbon steel, stainless steel or a ceramic composite material and coated with a coating material that is wear and corrosion resistant and when applied properly allows for the coated surface to have a variety of “textured” appearances. For example, the coated surface can be made to look like woven carbon fiber. The aesthetically pleasing, wear and corrosion resistant coating overlays wear surfaces and portions of the brake disk that will be, in many cases, visible when the brake disk is installed on the vehicle. The coating includes a first layer of a metal, such as a pure titanium metal, and a second layer that can include a Nitride, Boride, Carbide or Oxide of the metal used in the first layer. The coating can be applied using a physical vapor deposition source such as a cathodic arc source with a controlled gas atmosphere.

A brake disk including carbon steel, stainless steel or a ceramic composite material and coated with a coating material that is wear and corrosion resistant and when applied properly allows for the coated surface to have a variety of “textured” appearances. For example, the coated surface can be made to look like woven carbon fiber. The aesthetically pleasing, wear and corrosion resistant coating overlays wear surfaces and portions of the brake disk that will be, in many cases, visible when the brake disk is installed on the vehicle. The coating includes a first layer of a metal, such as a pure titanium metal, and a second layer that can include a Nitride, Boride, Carbide or Oxide of the metal used in the first layer. The coating can be applied using a physical vapor deposition source such as a cathodic arc source with a controlled gas atmosphere.