Granted Patent B2

US 12,601,382 · App. 17/809,307 · Granted Apr 14, 2026

Inventors: Markus Harke (Braunschweig, DE); Daniel Mohwinkel (Braunschweig, DE)

Assignee: VOLKSWAGEN AKTIENGESELLSCHAFT

F16D65/127F16D65/125F16D69/027F16D2065/132F16D2069/005F16D69/0408F16D2069/0458F16D2200/0021F16D2200/006F16D2250/0046F16D2250/0076

Abstract

Claims (12)

1 . A brake element for a transportation vehicle, the brake element comprising:

a base body that is planar, at least in some regions, to the planar sides of which at least two build-up layers are applied in each case at least in some regions,

wherein the at least two build-up layers include a first build-up layer and a second build-up layer and together form a surface which, in the mounted state of the brake element on the transportation vehicle, serves as a friction surface for a brake pad,

wherein there is a bonding zone in which both a material of the base body and a material of a build-up layer adjacent to the base body are present, and

wherein the bonding zone has a thickness perpendicular to an areal extent of a planar side that is less than 10 μm,

wherein the first build-up layer is adjacent to the base body, and the second build-up layer is applied to the first build-up layer,

wherein, when viewed perpendicular to the areal extent of a planar side, the first build-up layer has a thickness in a range of from 40 μm to 120 μm and the second build-up layer has a thickness in a range of from 60 μm to 420 μm,

wherein the second build-up layer consists of a composite of an iron alloy matrix with intercalated chromium carbide, titanium carbide or niobium carbide particles, and

wherein the proportion of a volume of the intercalated chromium carbide, titanium carbide or niobium carbide particles to the volume of the iron alloy matrix is in a range of from 20% to 40%.

2 . The brake element of claim 1 , wherein the first build-up layer consists of an austenitic chromium-nickel-molybdenum steel.

3 . The brake element of claim 2 , wherein the material of the first build-up layer has material properties which correspond to those of material 1.4404 according to standard EN10027-2 or material 316L according to the AISI standard.

4 . The brake element of claim 1 , wherein the iron alloy matrix consists of a material which has material properties which correspond to those of material 1.4404 according to standard EN10027-2 or material 316L according to the AISI standard.

Assignments (2)

Priority Claims (1)

Continuity (1)

References Cited (37)