US 11,927,231 B2
Composite brake rotor
Heewook Lee, Oakland Township, MI (US); Zhongyi Liu, Troy, MI (US); Anil K. Sachdev, Rochester Hills, MI (US); Tyson Whittier Brown, Royal Oak, MI (US); and Ratandeep Singh Kukreja, Auburn Hills, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Jul. 12, 2022, as Appl. No. 17/863,142.
Prior Publication US 2024/0019007 A1, Jan. 18, 2024
Int. Cl. F16D 65/12 (2006.01); C22C 21/04 (2006.01); C22C 38/02 (2006.01); C22C 38/06 (2006.01); C22C 38/14 (2006.01)
CPC F16D 65/125 (2013.01) [C22C 21/04 (2013.01); C22C 38/02 (2013.01); C22C 38/06 (2013.01); C22C 38/14 (2013.01); F16D 2200/0047 (2013.01); F16D 2200/0082 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A brake rotor having a composite structure, the brake rotor comprising:
an annular body defining opposite friction surfaces, the annular body comprising:
a core made of an Al—Si alloy and including at least one annular disc having an annular surface,
a thermal barrier layer made of a thermally insulating material disposed on the annular surface of the core, and
a wear-resistant layer made of an Fe—Al—Si—Zr alloy disposed on the annular surface of the core over the thermal barrier layer, the wear-resistant layer defining a first one of the opposite friction surfaces of the annular body.