Invention Grant
- Patent Title: Sliding element for use in internal combustion engine
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Application No.: US14379286Application Date: 2013-02-15
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Publication No.: US09759322B2Publication Date: 2017-09-12
- Inventor: Juliano A. Araujo , Nuno Costa
- Applicant: MAHLE Metal Leve S.A. , MAHLE International GmbH
- Applicant Address: BR Jundiai DE Stuttgart
- Assignee: MAHLE Metal Leve S.A.,MAHLE International GmbH
- Current Assignee: MAHLE Metal Leve S.A.,MAHLE International GmbH
- Current Assignee Address: BR Jundiai DE Stuttgart
- Agency: Alston & Bird LLP
- Priority: BR102012003607 20120216
- International Application: PCT/BR2013/000044 WO 20130215
- International Announcement: WO2013/120157 WO 20130822
- Main IPC: F16C33/04
- IPC: F16C33/04 ; B32B7/02 ; G11B5/64 ; B32B9/00 ; F16J9/26 ; C23C28/00

Abstract:
A sliding element for use in an internal combustion engine may include a ferrous base having a peripheral sliding surface covered by a protective surface layer, the protective surface layer including at least one nitride applied via at least one of physical vapour deposition and a nitrided layer. The peripheral sliding surface may have a diamond like carbon (DLC) coating disposed thereon. The coating may include at least one of (a) one or more transition layers composed of WC1-x and (b) an adhesive layer of metallic chromium with a crystal structure. The coating may include an intermediate layer of metal DLC, the metal may be tungsten in a multilayer structure of a-C:H:W and a-C:H, and an outer layer of metal-free DLC.
Public/Granted literature
- US20150018254A1 SLIDING ELEMENT FOR USE IN INTERNAL COMBUSTION ENGINE Public/Granted day:2015-01-15
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