Plasma Sprayed Al₂O₃-SiCw Coatings Deposited under the Electrostatic Field

Abstract:

Al₂O₃-SiCw (SiC whisker) powders were plasma sprayed on carbon steel under the electrostatic field. Effect of voltage on the microstructure and mechanical properties of the coatings was investigated. The erosion resistance was measured on the rotating disk erosion tester. The micro hardness and fracture toughness were obtained by the indentation method. It is found that the phase composition is unchanged for the coatings deposited in the presence or absence of electrostatic field while the grain size of coatings varies with the voltage. The porosity of coatings increases with the voltage slightly at first, and then a decrement tendency can be found. The erosion weight loss shows the similar trends with the porosity under the influence of voltage. The fracture toughness is the lowest when the voltage is 10 kV, and it is the highest for coatings deposited under no electrostatic field. The measurement of hardness yields the similar results though the voltage is different. The deflection behaviour of whiskers under the electrostatic field affects the deposition of molten powder and then the microstructure and properties of plasma sprayed coatings.

• Periodical: Applied Mechanics and Materials (Volume 853)
• Pages: 419-424
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.853.419
• Online since: September 2016
• Authors: Jing Ye Yu, Wei Ze Wang*, Liang Min Wu, Zheng Qu Feng
• Keywords: Al₂O₃-SiCw Coating, Erosion, Plasma Spraying, Toughness, Whisker

References

[1] D. Toma, W. Brandl and G. Marginean, Wear and corrosion behaviour of thermally sprayed cermet coatings, Surf Coat Tech, 2001, 138, 149-158.

DOI: 10.1016/s0257-8972(00)01141-5

[2] C.J. Li and A. Ohmori, Relationships between the microstructure and properties of thermally sprayed deposits, J Therm Spray Techn, 2002, 11(3), 365 - 374.

DOI: 10.1361/105996302770348754

[3] Z.X. Yu, W.Z. Wang and H.H. Wang, Effect of dimensions of non-bonded lamellar interfaces on the stress distribution in APS-TBCs, J Therm Spray Techn, 2014, 23(8), 1436-1444.

DOI: 10.1007/s11666-014-0147-5

[4] C.J. Li, G.J. Yang and A. Ohmori, Relationship between particle erosion and lamellar microstructure for plasma-sprayed alumina coatings, Wear, 2006, 260(11-12), 1166-1172.

DOI: 10.1016/j.wear.2005.07.006

[5] Y. Zhang, J. Ren, S. Tian, H. Li and Z. Hu, SiC coating toughened by HfC nanowires to protect C/C composites against oxidation, Appl Surf Sci, 2014, 311, 208-213.

DOI: 10.1016/j.apsusc.2014.05.042

[6] Y. Xie, L. Cheng, L. Li, H. Mei and L. Zhang, Fabrication of laminated SiCw/SiC ceramic composites by CVI, J Eur Ceram Soc, 2013, 33(10), 1701-1706.

DOI: 10.1016/j.jeurceramsoc.2013.02.019

[7] X.L. Bai, C.Z. Huang, J. Wang, B. Zou and H.L. Liu, Fabrication and characterization of Si3N4 reinforced Al2O3-based ceramic tool materials, Ceram Int, 2015, 41(10), 12798-12804.

DOI: 10.1016/j.ceramint.2015.06.115

[8] K. Takahashi, M. Yokouchi, S.K. Lee and K. Ando, Crack‐healing behavior of Al2O3 toughened by SiC whiskers, J Am Ceram Soc, 2003, 86(12), 2143 - 2147.

DOI: 10.1111/j.1151-2916.2003.tb03622.x

[9] F. Ye, T.C. Lei and Y. Zhou, Interface structure and mechanical properties of Al2O3–20vol% SiCw ceramic matrix composite, Materials Science and Engineering A, 2000, 281(1), 305–309.

DOI: 10.1016/s0921-5093(99)00714-5

[10] N. Iwamoto, N. Umesaki, S. Endo and T. Morimura, Characterization of plasma-sprayed and whisker-reinforced alumina coatings, J Mater Sci, 1987, 22(3), 1113-1119.

DOI: 10.1007/bf01103558

[11] C.P. Dogan, Influence of whisker toughening and microstructure on the wear behavior of Si3N4- and Al2O3-matrix composites reinforced with SiC, J Mater Sci, 2000, 35, 5793-5807.

[12] C.A. Wang, H. Yong and H.X. Zhai, The effect of whisker orientation in SiC whisker-reinforced Si3N4 ceramic matrix composites, J Eur Ceram Soc, 1999, 19, 1903-(1909).

DOI: 10.1016/s0955-2219(98)00289-1

[13] Yamaguqi, Forming of product enhanced by fiber in controlled direction, (1997).

[14] M. Tutar, H. Aydin, A. Durmus and A. Bayram, The hydro-abrasive erosion wear behavior of duplex-treated surfaces of AISI H13 tool steel, Technological Sciences, 2014, 57(5), 1040-1051.

DOI: 10.1007/s11431-014-5510-8

[15] P.A. Dearnley and E. Kern, Wear response of crystalline nanocomposite and glassy Al2O3-SiC coatings subjected to simulated piston ring/cylinder wall tests, Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design & Applications, 2005, 219, 121-137.

DOI: 10.1243/146442005x10300

[16] X.H. Lin, Y. Zeng and S.W. Lee, Characterization of alumina–3 wt. % titania coating prepared by plasma spraying of nanostructured powders, J Eur Ceram Soc, 2004, 24(4), 627-634.

DOI: 10.1016/s0955-2219(03)00254-1