Effects of Substrate Preheating on Microstructure and Interface Characterization of Al2O3-13% TiO2 Ceramic Coating Fabricated by Laser Cladding

Dong Sheng Wang

doi:10.4028/www.scientific.net/AMM.540.13

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 540Effects of Substrate Preheating on Microstructure...

Effects of Substrate Preheating on Microstructure and Interface Characterization of Al₂O₃-13% TiO₂ Ceramic Coating Fabricated by Laser Cladding

Abstract:

In this study, Al₂O₃–13 wt% TiO₂ ceramic powders was perset on the substrate of a GH416 Ni-base superalloy by the squash presetting method and cladding coatings were fabricated by a fiber laser. Influences of substrate preheating on the microstructure and interface characterization of laser-clad ceramic coatings were investigated. The results show that the crack formation of the clad ceramic coating can be prevented by substrate preheating. In addition, substrate preheating is helpful to form a good metallurgical bonding between the coating and substrate. Clad ceramic coatings with dense structures, crack-free, low dilutions and good metallurgical bonding to substrate were obtained under the optimum processing parameters. The cross-section of the clad coating indicated three different microstructural regions, namely, fine equiaxed crystals at the upper region, columnar crystals in the middle region, and very fine equiaxed crystals at the bottom region.

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Periodical:

Applied Mechanics and Materials (Volume 540)

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13-16

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.540.13

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Online since:

April 2014

Authors:

Dong Sheng Wang*

Keywords:

Al₂O₃-13 Wt% TiO₂ Ceramic Coating, Interface Characterization, Laser Cladding, Microstructure, Squash Presetting, Substrate Preheating

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References

[1] J.H. Ouyang, S. Nowotny, A. Richter and E. Beyer, Characterization of laser clad yttria partially-stabilized ZrO2 ceramic layers on steel 16MnCr5, Surf. Coat. Technol. 137 (2001) 12-20.

DOI: 10.1016/s0257-8972(00)00869-0

Google Scholar

[2] J.H. Ouyang, S. Nowotny, A. Richter and E. Beyer, Laser cladding of yttria partially stabilized ZrO2 (YPSZ) ceramic coatings on aluminum alloys, Ceram. Int. 27 (2001) 15-24.

DOI: 10.1016/s0272-8842(00)00036-5

Google Scholar

[3] S. Nowotny, A. Richter and K. Tangermann, Surface protection of light metals by one-step laser cladding with oxide ceramics, J. Therm. Spray Technol. 8 (1999) 258-262.

DOI: 10.1361/105996399770350476

Google Scholar

[4] Y. Chen, D. Wu, G. Ma, W. Lu and D. Guo, Coaxial laser cladding of Al2O3-13%TiO2 powders on Ti-6Al-4V alloy. Surf. Coat. Technol. 228 (2013) S452-S455.

DOI: 10.1016/j.surfcoat.2012.05.027

Google Scholar

[5] P. Wu, C.Z. Zhou and X.N. Tang, Laser alloying of a gradient metal-ceramic layer to enhance wear properties, Surf. Coat. Technol. 73 (1995) 111-114.

DOI: 10.1016/0257-8972(94)02369-7

Google Scholar

[6] J. Choi, S.K. Choudhuri and J. Mazumder, Role of preheating and specific energy input on the evolution of microstructure and wear properties of laser clad Fe–Cr–C–W alloys, J. Mater. Sci. 35 (2000) 3213-3219.

Google Scholar

[7] V.K. Balla, S. Bose, A. Bandyopadhyay, Processing of bulk alumina ceramics using laser engineered net shaping, Int. J. Appl. Ceram. Technol. 5 (2008) 234-242.

DOI: 10.1111/j.1744-7402.2008.02202.x

Google Scholar