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Wear protection layer assembly and component with wear protection layer

A protection layer and component technology, which is applied in the field of manufacturing the wear protection layer component and the hydrogen-containing amorphous carbon layer, can solve the problems of reducing the wear resistance of the carbon layer and the like, and achieve the effect of high wear resistance

Pending Publication Date: 2020-01-17
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Basic research results on the generation and characterization of thin carbon layers (see [1] S.S. Camargo, Jr, A.L. Baia Neto, R.A. Santos, F.L. Freire, Jr, R. Carius, F. Finger, Improved high-temperature stability of Si incorporated a-C: H films", Diamond and Related Materials 7, 1998, pp. 1155-1162; [2] A.L. Baia Neto, R.A. Santos, F.L. Freire, Jr, S.S. Camargo, Jr, R. Carius, F. Finger, W .Beyer,, Relation between mechanical and structural properties of silicon-incorporated hard a-C:H films", Thin Solid Films 293, 1997, pp. 206-211) showed that although the silicon doping of thin amorphous carbon layers improves the Heat resistance at high temperatures, however this significantly reduces the wear resistance of this carbon layer

Method used

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  • Wear protection layer assembly and component with wear protection layer
  • Wear protection layer assembly and component with wear protection layer
  • Wear protection layer assembly and component with wear protection layer

Examples

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Embodiment Construction

[0018] Figure 1A Shown is a strongly simplified cross-sectional view of a wear protection layer assembly 10 according to the invention, which successively consists of a substrate 11 , an adhesive layer 12 applied to the substrate 11 , a first transition layer 13 , a second The transition layer 14 is formed by a final protective or functional layer 15 . Here, a component generally composed of steel is used as substrate 11 , which component is provided for coating in order to improve the wear resistance and heat resistance of the component. The adhesive layer 12 applied to the substrate 11 consists of crystalline chromium, while the two transition layers 13 , 14 applied to this adhesive layer are formed as chromium carbide compounds and differ from each other mainly with respect to the chromium / carbon ratio. , in order to produce a microscopic adaptation to the functional layer 15 subsequently applied on said transition layer. The outwardly terminating functional layer 15 is f...

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Abstract

The invention relates to a wear protection layer assembly (10). The wear protection layer assembly (10) is provided with a substrate (11), an adhesive layer (12) formed on the substrate, and at leastone protective layer (15) terminating outwards. The wear protection layer assembly (10) is set as a substrate-side region (15') in which a hydrogen-containing amorphous carbon layer (15) is doped withsilicon as a dopant, and an outer region (15'') remains undoped. Two transition layers (13, 14) are formed between the adhesive layer (12) and the hydrogen-containing amorphous carbon layer (15), said transition layers being continuously doped with silicon as a dopant. The transition layers (13, 14) can each have a lower silicon doping than the substrate-side region (15') of the amorphous carbonlayer (15).

Description

technical field [0001] The invention relates to a wear protection layer assembly having a substrate, an adhesive layer formed on the substrate and at least one outwardly terminating protection layer, which is formed as a hydrogen-containing amorphous carbon layer. The invention also relates to a component having a wear protection layer assembly and a method for producing the wear protection layer assembly. Background technique [0002] Components that are exposed to high temperatures and pressures are provided with wear protection, this is especially the case in components of high-pressure injection systems (common rail injectors). A hydrogen-containing amorphous carbon layer is used as the wear protection layer, which is applied to the component by means of a plasma-supported deposition method and has a heat resistance up to approximately 350° C. [0003] Basic research results on the generation and characterization of thin carbon layers (see [1] S.S. Camargo, Jr, A.L. Bai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C16/24C23C16/50C23C14/18C23C14/34F02M61/16
CPCC23C16/24C23C16/50C23C14/185C23C14/34F02M61/166C23C16/26F02M2200/9038C23C16/029C23C16/0281C23C28/046C23C28/048C23C30/00
Inventor M·温孔J·韦克凯尔M·米勒S·格罗塞S·拉特U·迈
Owner ROBERT BOSCH GMBH
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