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Wear-resistant layer and method for producing a wear-resistant layer

A technology of wear-resistant layer and filling material, which is applied in the field of wear-resistant layer and can solve problems such as expensive

Inactive Publication Date: 2015-11-04
ABB TURBO SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, cBN is an expensive material,

Method used

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  • Wear-resistant layer and method for producing a wear-resistant layer
  • Wear-resistant layer and method for producing a wear-resistant layer
  • Wear-resistant layer and method for producing a wear-resistant layer

Examples

Experimental program
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Effect test

Embodiment 1

[0045] With the aid of thermal spraying, the wear layer is applied to the figure 1 on the leaves. With binder material NiCrSiB and filler material Al 2 o 3 -ZrO 2 Implementation basis Figures 1 to 4 the embodiment.

[0046] figure 1 A view is shown of a component front side 2 , in particular of a blade 1 , such as a turbine blade, which can be used for a turbine wheel of a turbocharger. On the front side of the turbine blade, ie the suction side 2 , an anti-wear layer is applied, which is also referred to as the front end layer. The rear side 3 of the turbine blade, ie the pressure side, is not shown in this figure. The suction side 2 and the pressure side 3 are delimited from the outside by blade tips 6 . The blade tip 6 forms the leading edge 4 with the suction side 2 . The suction side 2 is delimited by an inlet side 7 , an outlet side 8 , blade tips 6 and blade bottoms 5 . In the operating state, a compressible, in particular gaseous, fluid flows along the sucti...

Embodiment 2

[0053] For this example, Ni-15Cr-5Si-4B with a particle size of -63 + 16 μm was used. This fine-grained material is preferred since it must be melted in a single process step. This powder with the selected composition is a self-flowing material which, when melted, simultaneously allows metallic bonding to the base material of the substrate and does not exhibit a lamellar structure that could favor crack propagation. The Vickers hardness HV0.3 of the adhesive material measured in the metal matrix after the thermal spraying process had an average value of 747 HV0.1. This hardness is 1.8 times greater than the hardness value achievable by means of laser coating welding.

[0054] Use Al 2 o 3 with ZrO 2 or just use Al 2 o 3 as filling material. The particles are usually produced by melting them together and then comminuting, so that the surface has sharp edges. Confirmed, Al 2 o 3 with ZrO 2 layer used as filler material, compared to only Al 2 o 3 For the layer used a...

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Abstract

A wear-resistant layer for a component comprises a filler material and a binder material. The binder material comprises a metallic matrix and the filler material comprises an oxide-ceramic compound, which contains Al2O3 - ZrO2 or Al2O3 - TiO2. The metallic matrix forms a hard matrix with a hardness of 400 HV0.1 to 850 HV0.1. The filler material has a hardness of 1400 HV0.1 to 1800 HV0.1.

Description

[0001] The invention relates to a wear-resistant layer according to the generic concept of claim 1 and a method for producing a wear-resistant layer according to claim 11 . Background technique [0002] The production of coatings by thermal spraying is known from the prior art. Thermal spraying methods are classified in standards EN657 and ISO 14917. To protect against wear or corrosion, for example, components made of different base materials can be provided with layers made of high-melting metals or ceramics. Components that are subject to severe thermal stress can be provided with thermally conductive or thermally insulating layers by means of thermal spraying. Coating materials which can be produced in powder form are described, for example, in EN 1274, or coating materials which can be produced in wire form are mentioned, for example, in the standard EN ISO 14919. The coating material is fed and melted during thermal spraying with a high energy heat source. The heat so...

Claims

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Application Information

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IPC IPC(8): C23C4/06C23C28/00C23C30/00
CPCC23C4/06C23C28/00C23C30/00
Inventor S.斯伊格曼恩A.R.尼科尔
Owner ABB TURBO SYST
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