公开(公告)号：US20240209908A1

公开(公告)日：2024-06-27

申请号：US18087217

申请日：2022-12-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Heewook LEE ,  Zhongyi LIU ,  Anil K. SACHDEV ,  Tyson Whittier BROWN ,  Ratandeep Singh KUKREJA

IPC: F16D65/10

CPC classification number: F16D65/10 ,  F16D2065/132 ,  F16D2200/0017 ,  F16D2200/003 ,  F16D2200/0039 ,  F16D2250/0046

Abstract: A brake drum having a composite structure includes a cylindrical body defining an inner friction surface and an outer surface. The cylindrical body includes a drum core comprising an Al—Si alloy, the drum core including an inner surface, and an outer surface of the drum core defining the outer surface of cylindrical body. The cylindrical body includes a thermal barrier layer comprising a thermally insulating material on the inner surface of the drum core, and a wear-resistant layer comprising an Fe—Al—Si—Zr alloy on the inner surface of the drum core over the thermal barrier layer, the wear-resistant layer defining the inner friction surface of the cylindrical body.

公开(公告)号：US20240218909A1

公开(公告)日：2024-07-04

申请号：US18090553

申请日：2022-12-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhongyi LIU ,  Heewook LEE ,  Anil K. SACHDEV ,  Tyson Whittier BROWN ,  Ratandeep Singh KUKREJA

IPC: F16D65/12 ,  C23C16/06 ,  C23C16/40 ,  C23C16/455 ,  C23C28/00 ,  F16D65/10

CPC classification number: F16D65/125 ,  C23C16/06 ,  C23C16/405 ,  C23C16/45529 ,  C23C28/3455 ,  F16D65/10 ,  F16D2200/003 ,  F16D2200/0039 ,  F16D2250/0007 ,  F16D2250/0046

Abstract: A method of manufacturing a brake rotor or brake drum having a composite structure includes casting an aluminum alloy to form a core of the brake rotor or brake drum, the core defining a core surface, depositing a high entropy alloy or yttrium stabilized zirconia on the core surface to form a thermal barrier layer on the core surface, and depositing an iron-aluminum-silicon-zirconium alloy on the thermal barrier layer to form a wear-resistant layer on the thermal barrier layer, the wear-resistant layer defining a friction surface of the brake rotor or brake drum.

公开(公告)号：US20240019007A1

公开(公告)日：2024-01-18

申请号：US17863142

申请日：2022-07-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Heewook LEE ,  Zhongyi LIU ,  Anil K. SACHDEV ,  Tyson Whittier BROWN ,  Ratandeep Singh KUKREJA

IPC: F16D65/12 ,  C22C21/04 ,  C22C38/14 ,  C22C38/06 ,  C22C38/02

CPC classification number: F16D65/125 ,  C22C21/04 ,  C22C38/14 ,  C22C38/06 ,  C22C38/02 ,  F16D2200/0082 ,  F16D2200/0047

Abstract: A brake rotor having a composite structure may include an annular body defining opposite friction surfaces of the brake rotor. The annular body may include a core made of an Al—Si alloy, a thermal barrier layer made of a thermally insulating material disposed on the core, and a wear-resistant layer made of an Fe—Al—Si—Zr alloy disposed on the core over the thermal barrier layer. The wear-resistant layer may define a first one of the opposite friction surfaces of the annular body.