Microstructure performance of laser clad Ni-based alloy coating with SiC ceramics particles

Si Songhua; Yuan Xiaomin; He Yizhu

Si Songhua, Yuan Xiaomin, He Yizhu. Microstructure performance of laser clad Ni-based alloy coating with SiC ceramics particles[J]. LASER TECHNOLOGY, 2002, 26(5): 324-326.

Citation:

Si Songhua, Yuan Xiaomin, He Yizhu. Microstructure performance of laser clad Ni-based alloy coating with SiC ceramics particles[J]. LASER TECHNOLOGY, 2002, 26(5): 324-326.

Citation:

Si Songhua, Yuan Xiaomin, He Yizhu. Microstructure performance of laser clad Ni-based alloy coating with SiC ceramics particles[J]. LASER TECHNOLOGY, 2002, 26(5): 324-326.

Microstructure performance of laser clad Ni-based alloy coating with SiC ceramics particles

Graphical Abstract

Graphical Abstract

Abstract

Abstract

Laser clad Ni based alloy coating with 20%(vol%)SiC(NiSiC) on 16Mn steel substrate has been obtained by 5kW CO2 continuous wave laser implement. Microstructure morphology and phase structure of the laser clad alloy coating have been studied,and microhardness and the performance of sliding wear test of the coating have been discussed in contrast to laser clad Ni-based alloy coating(Ni60). The result shows that the microstructure of laser clad alloy coating is consisted of γ dendrite solid solution and the eutectic structure between the dendrites. Constituent phases of the coating mainly have γ-Ni,γ-(Fe,Ni),(Cr,Fe)7C33,Cr23C6 and (Cr,Si)3Ni3Si. Microhardness and sliding wear resistance of the NiSiC coating are higher than that of the Ni60 coating.