Boronized brake disc rotor
AssigneeGM Global Technology Operations LLC
InventorBenjamin Everest Slattery
Life of this patent
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Abstract
A brake rotor, a brake system including a brake rotor, and a method of boronizing a brake rotor, wherein the brake rotor includes a rotor body including a braking surface. The rotor body includes an iron alloy and the braking surface includes a layer of Fe2B phases in the braking surface. The brake system includes the brake rotor and a brake pad engageable with the braking surface. The method includes boronizing the braking surface and forming a Fe2B phases on the braking surface and cooling the rotor body to ambient temperature.
Claims20
A brake rotor, comprising:
- a rotor body including a braking surface, wherein the rotor body includes an iron alloy including graphite and the braking surface includes a layer of iron boride phases and graphite phases in the braking surface, wherein the iron boride phases have the formula Fe2B.
A vehicle, comprising:
- a brake system including a brake rotor including a rotor body including a braking surface, wherein the rotor body includes an iron alloy and graphite, and the braking surface includes a layer of iron boride phases and graphite phases in the braking surface, wherein the iron boride phases have the formula Fe2B;
- and
- a brake pad engageable with the braking surface.
A method of forming a brake disc rotor, comprising:
- removing contamination from a brake rotor, wherein the brake rotor includes a rotor body including a braking surface, wherein the rotor body includes an iron alloy and graphite;
- boronizing the braking surface and forming a layer of iron boride phases and graphite phases on the braking surface wherein the iron boride phases have the formula Fe2B;
- and
- cooling the rotor body to ambient temperature.
Dependencies are inferred from the claim text.