High Power Diode Laser Cladding of Wear Resistant Metal Matrix Composite Coatings

Damian Janicki

doi:10.4028/www.scientific.net/SSP.199.587

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HomeSolid State PhenomenaSolid State Phenomena Vol. 199High Power Diode Laser Cladding of Wear Resistant...

High Power Diode Laser Cladding of Wear Resistant Metal Matrix Composite Coatings

Abstract:

The paper describes the application of high power direct diode laser (HPDDL), with a rectangular laser beam spot of size 1.8x6.8 mm, for the cladding of Ni-based alloy (NiSiB)+WC composite coatings. The laser cladding process was carried out with a direct injection of cladding powder into the melt pool. The influence of parameters, such as laser power beam (heat input) and WC particles size in the cladding powder on the coatings microstructure and wear properties was investigated. The microstructure and morphology of the coatings were assessed by optical and scanning electron microscopy. Wear properties of the coatings were investigated using abrasive and erosive wear tests. The results showed that a proper selection of laser cladding parameters provides non-porous coatings with excellent metallurgical bonding and a homogeneous distribution of WC particles. The dissolution of WC particles increases with the size of WC particles decreasing in the cladding powder and increasing the laser power level (heat input). The coatings containing WC particles in size range of 100-200 µm provide the highest wear resistance under erosive and abrasive conditions.

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Periodical:

Solid State Phenomena (Volume 199)

Pages:

587-592

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.199.587

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Online since:

March 2013

Authors:

Damian Janicki

Keywords:

Abrasive Wear, Erosive Wear, High Power Direct Diode Laser (HPDDL), Laser Cladding, Metal Matrix Composite (MMC), Tungsten Carbide

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References

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