Solid Particle Erosion Behavior of NiCr-Al2O3-ZrO2 (8Y) Ceramic Composites


Article Preview

The erosion wear resistance of YSZ ceramics is worth studying because solid particle erosion is one of the main causes of destroying the materials and apparatuses. In this paper, 8YSZ ceramics reinforced by NiCr alloy and Al2O3 particles were pressureless sintered at an optimized sintering condition. The facture toughness reached a maximum value of 4.6 MPa•m 1/2 when the addition of NiCr alloy is 12 vol.%, which was much higher than that of the pure 8YSZ ceramic (2.0 MPa•m 1/2) fabricated in the same condition. Solid particle erosion wear behavior of NiCr-Al2O3-ZrO2 (8Y) ceramics composites was performed by self-designed sand blasting type solid particle erosion wear equipment, using 36# SiC particles as abrasive particles with the 90o erosion angle. The effect of the volume addition of NiCr alloy on the erosion wear of NiCr-Al2O3-ZrO2 (8Y) ceramic composites at room temperature was investigated. The results show that the volume erosion rate of the ceramic composites decreased as the volume addition of the NiCr alloy increasing. Crossing cracks, plastic deformation and minor chipping are the major erosion mechanisms.



Key Engineering Materials (Volumes 512-515)

Edited by:

Wei Pan and Jianghong Gong




F. J. Liu et al., "Solid Particle Erosion Behavior of NiCr-Al2O3-ZrO2 (8Y) Ceramic Composites", Key Engineering Materials, Vols. 512-515, pp. 451-454, 2012

Online since:

June 2012




[1] I. Finnie, Some reflections on the past and future of erosion, Wear. 186–187 (1995) 1-10.

[2] Q.W. Bu, Chromium–titanium carbide cermet coating for elevated temperature erosion protection in fluidized bed combustion boilers, Wear. 225–229 (1999) 502-509.


[3] Q.W. Bu and W.L. Seong, Elevated temperature erosion of several thermal-sprayed coatings under the simulated erosion conditions of in-bed tubes in a fluidized bed combustor, Wear. 203-204 (1997) 580-587.


[4] A.G. Evans, M.E. Gulden, M.E. Rosenblatt, Impact damage in brittle materials in the elastic-plastic response régime, Proc. Roy. Soc. Lon. Ser. A 361 (1978) 343-365.

[5] S.M. Wiederhorn and B.R. Lawn, Strength degradation of glass impacted with sharp particles: I, annealed surfaces, J. Amer. Ceram. Soc. Vol. 62 (1979) 66-67.

[6] R.G. Wellman, M.J. Deakin and J.R. Nicholls, The effect of TBC morphology on the erosion rate of EB PVD TBCs, Wear. Vol. 258 (2005) 349-356.


[7] J.R. Nicholls, M.J. Deakin and D.S. Ricker, A comparison between the erosion behaviour of thermal spray and electron beam physical vapour deposition thermal barrier coatings, Wear Vol. 233–235 (1999) 352-261.


[8] Fengjiao Liu, Minghao Fang, Xiaojun Wang, et al, Solid particle erosion behavior of 3YSZ ceramics at elevated temperatures, Key Eng. Mater. 492 (2012) 85-88.


[9] A. W. Ruff and L. K. Ives, Measurement of solid particle velocity in erosive wear, Wear 35(1975) 195-199.


[10] B.R. Lawn, B.J. Hockey and S.M. Wiederhorn, Atomically sharp cracks in brittle solids: an electron microscopy study, J. Mater. Sci. Vol. 15 (1980) 1207-1223.


[11] K.C. Goretta, J.I. Peña, V.M. Orera, et al, Solid-particle erosion of directionally solidified Al2O3–ZrO2 (Y2O3) eutectics, Wear. Vol. 268 (2010) 571-578.