公开(公告)号：US20160230274A1

公开(公告)日：2016-08-11

申请号：US15132818

申请日：2016-04-19

Applicant: Caterpillar Inc.

Inventor： Colm Martin Flannery ,  Steven Charles Taylor ,  Bao Feng ,  Lucy Victoria Berg ,  Joseph Ryan Sullivan

IPC: C23C16/26 ,  C23C14/06 ,  C23C16/44 ,  C23C14/22 ,  C23C16/30 ,  C23C16/06

CPC classification number: C23C28/343 ,  C23C28/32 ,  C23C28/34 ,  C23C28/42 ,  F02M59/445 ,  F02M61/166 ,  F02M2200/02 ,  F02M2200/05 ,  F02M2200/9038

Abstract: A multilayer coating for a metallic surface of a component is provided. The multilayer coating includes a first coating having a metal nitride. The first coating at least partially overlaps the metallic surface. The multilayer coating also includes a second coating having a metal. The second coating at least partially overlaps the first coating. The multilayer coating further includes a third coating having a Diamond Like Carbon (DLC) material. The third coating at least partially overlaps the second coating. The first coating, the second coating, and the third coating differ from one another with respect to at least one of hardness, elasticity, corrosion resistance, and lubricity. The multilayer coating includes at least ten overlapping layers having successive layers of the first coating, the second coating, and the third coating in repeating sequence.

Abstract translation: 提供了用于元件的金属表面的多层涂层。 多层涂层包括具有金属氮化物的第一涂层。 第一涂层至少部分地与金属表面重叠。 多层涂层还包括具有金属的第二涂层。 第二涂层至少部分地与第一涂层重叠。 多层涂层还包括具有金刚石碳（DLC）材料的第三涂层。 第三涂层至少部分地与第二涂层重叠。 第一涂层，第二涂层和第三涂层相对于硬度，弹性，耐腐蚀性和润滑性中的至少一种彼此不同。 所述多层涂层包括至少十个具有重复顺序的第一涂层，第二涂层和第三涂层的连续层的重叠层。

公开(公告)号：US20220349370A1

公开(公告)日：2022-11-03

申请号：US17246146

申请日：2021-04-30

Applicant: Caterpillar Inc.

Inventor： Jonathan Robert Crow ,  Lucy Victoria Berg ,  Douglas Edward Guyer, II ,  Michael Alan Pershing

IPC: F02M61/16 ,  C21D9/00 ,  C21D1/06 ,  C22C38/44 ,  C22C38/00 ,  C22C38/04 ,  C22C38/02 ,  C22C38/46 ,  F02M61/18

Abstract: An example component of a machine includes a core layer and an outer layer encasing the core layer. The outer layer has a greater carbon concentration and hardness than the core layer. The outer layer may also be compressively stressed, while the core layer may have tensile stress. The stress and/or hardness profile of the component may enhance its resistance to cracking, particularly in applications where the component is impacted by other object and/or operates at elevated temperatures. The component, such as parts of a fuel injector, may be formed by rough forming the component, carburizing the component, quenching the component, subzero processing the component, and then performing a tempering process. The components may have relatively sharp transition from the high carbon outer layer to the lower carbon core layer. Additionally, the components have a relatively high tempering resistance when used in relatively high temperature environments.

公开(公告)号：US11885289B2

公开(公告)日：2024-01-30

申请号：US17246146

申请日：2021-04-30

Applicant: Caterpillar Inc.

Inventor： Jonathan Robert Crow ,  Lucy Victoria Berg ,  Douglas Edward Guyer, II ,  Michael Alan Pershing

IPC: F02M61/16 ,  C21D1/06 ,  C21D9/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  C22C38/46 ,  F02M61/18

CPC classification number: F02M61/166 ,  C21D1/06 ,  C21D9/0068 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  C22C38/46 ,  F02M61/18

Abstract: An example component of a machine includes a core layer and an outer layer encasing the core layer. The outer layer has a greater carbon concentration and hardness than the core layer. The outer layer may also be compressively stressed, while the core layer may have tensile stress. The stress and/or hardness profile of the component may enhance its resistance to cracking, particularly in applications where the component is impacted by other object and/or operates at elevated temperatures. The component, such as parts of a fuel injector, may be formed by rough forming the component, carburizing the component, quenching the component, subzero processing the component, and then performing a tempering process. The components may have relatively sharp transition from the high carbon outer layer to the lower carbon core layer. Additionally, the components have a relatively high tempering resistance when used in relatively high temperature environments.