Development of a new wear resistant coating by arc spraying of a steel-based cored wire

Lidong ZHAO; Pia KUTSCHMANN; Binyou FU; Dingyong HE

doi:10.1007/s11465-009-0012-2

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Front. Mech. Eng. ›› 2009, Vol. 4 ›› Issue (1) : 1-4. DOI: 10.1007/s11465-009-0012-2

RESEARCH ARTICLE

Development of a new wear resistant coating by arc spraying of a steel-based cored wire

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Abstract

In the present study, a cored wire of 304 L stainless steel as sheath material and NiB and WC-12Co as filler materials was designed and deposited to produce a new wear resistant coating containing amorphous phase by arc spraying. The microstructure of the coating was investigated. The porosity and hardness of the coating were determined. The wear performance of the coating was evaluated. The XRD and TEM analyses showed that there are high volume of amorphous phase and very fine crystalline grains in the coating. DTA measurements revealed that the crystallization of the amorphous phase occurred at 579.2°C. Because metallurgical processes for single droplets were non-homogenous during spraying, the lamellae in the coating have different hardness values, which lie between about 700 and 1250 HV_{100 g}. The abrasive wear test showed that the new Fe-based coating was very wear resistant.

Keywords

amorphous phase / arc spraying / microstructure / wear / cored wire

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Lidong ZHAO, Pia KUTSCHMANN, Binyou FU, Dingyong HE. Development of a new wear resistant coating by arc spraying of a steel-based cored wire. Front Mech Eng Chin, 2009, 4(1): 1‒4 https://doi.org/10.1007/s11465-009-0012-2

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Acknowledgements

The authors gratefully acknowledge the financial support of the German Science Foundation (DFG) within the scope of the project ZH205/1-1 for carrying out part of the study above reported.