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Sliding elements, internal combustion engines and processes for obtaining sliding elements

A technology for sliding components and internal combustion engines, which is applied to the plating of engine components, mechanical equipment, superimposed layers, etc., and can solve problems such as lack of uniformity of hardness, damage wear resistance, and reduced working life of components

Active Publication Date: 2019-11-08
MAHLE METAL LEVE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The result is a thin film with hardness variation that impairs wear resistance and reduces the working life of the component
[0018] In this way, a big problem that exists today in the deposition of ta-C thin films arises from the lack of uniformity of hardness and the inability to reduce the internal stress, preventing the growth of DLC layers with larger thicknesses.

Method used

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  • Sliding elements, internal combustion engines and processes for obtaining sliding elements
  • Sliding elements, internal combustion engines and processes for obtaining sliding elements
  • Sliding elements, internal combustion engines and processes for obtaining sliding elements

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Embodiment Construction

[0034] figure 1 A cross-sectional view of a sliding element 1 of the invention is shown. In a preferred but not essential manner, the sliding element 1 of the invention comprises a ferrous base material 2, such as stainless steel, carbon steel or cast iron containing 10% to 17% chromium. On these base materials, a nitride layer can be applied, and / or there can even be a nitride layer applied by PVD. A metal connecting layer 3 is applied directly on the base material 2 or, alternatively, as occurs in the prior art, the material base 2 is subjected to a nitriding treatment or PVD coating before receiving the connecting layer 3 .

[0035]As a main feature, the metallic connection layer 3 comprises chromium, nickel or cobalt with a face-centered cubic (fcc) structure, wherein, in a preferred but not necessary manner, a polycrystalline columnar layer of chromium with an fcc structure is applied. In particular, the connection layer has a thickness varying between 500 nm and 1000 ...

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Abstract

The invention describes a sliding element (1) for an internal combustion engine provided with a ferrous base material (2) on which a film (6) is applied, said film ( 6) successively comprising a metal connection layer (3), a transition layer (4) and a contact layer (5), wherein the connection layer (4) comprises a metallic material and the contact layer (5) comprises a metal material having a weight of at most 2% Hydrogen, doped with metal elements, forming a DLC (diamond-like carbon) layer of the a-C:Me type layer.

Description

technical field [0001] The invention relates to a sliding element for an internal combustion engine in order to increase its service life by increasing its fatigue strength and wear resistance, and at the same time prevent the wear of the parts of the engine interacting with said sliding element, said The sliding element is provided with a ferrous substrate on which is applied a thin film comprising successively a transition layer, a connection layer and a contact layer, the connection layer comprising DLC ​​(diamond-like carbon, diamond-like carbon) doped with metal elements ). Background technique [0002] In view of the demands of the growing automation industry, new demands have arisen which are reflected in greater stress on the components of internal combustion engines. In this way, current engine components are not designed to handle such demands, subject to premature wear. Some of the components subject to this influence are sliding elements, parts of piston rings ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/02C23C14/06
CPCC23C14/0605F16J9/26C23C28/30C23C26/00C23C14/06C23C30/00C23C14/024C23C8/24C23C14/022C23C14/025C23C14/16C23C14/325C23C16/50
Inventor 茹利亚诺·阿韦拉尔·阿劳霍罗伯特·理查德·班菲尔德
Owner MAHLE METAL LEVE