Study on Fracture Behavior of Alumina Ceramics Toughened by Combining In Situ Growth Abnormal Grains, 3Y-TZP and Cu

Abstract:

Article Preview

α-Al2O3 powders, a small amount of 3Y-TZP and Cu powders were used as principle materials in which adequate amount of TiO2-MgO-CAS system additives were added by wet grinding .The compacts were prepared by hot-pressed sintering. The results showed that the fracture toughness was significantly enhanced by synergistic toughening of in-situ growth abnormal grain, phase transformation and metal particles. Under the sinter condition of 30MPa and 1550 for 1h, the maximum fracture toughness reached to 7.90MPa·m1/2 and the bending strength is in advance of 600Mpa, which was one time higher than un-toughen alumina ceramics. The effects of multiphase synergistic toughening on the fracture toughness of alumina ceramic were investigated; meanwhile, the fracture behavior and the mechanisms of toughening were analyzed.

Info:

Periodical:

Key Engineering Materials (Volumes 324-325)

Edited by:

M.H. Aliabadi, Qingfen Li, Li Li and F.-G. Buchholz

Pages:

511-514

DOI:

10.4028/www.scientific.net/KEM.324-325.511

Citation:

S. F. Rong et al., "Study on Fracture Behavior of Alumina Ceramics Toughened by Combining In Situ Growth Abnormal Grains, 3Y-TZP and Cu ", Key Engineering Materials, Vols. 324-325, pp. 511-514, 2006

Online since:

November 2006

Export:

Price:

$35.00

[1] D.S. Horn and G.L. Messing. J. Mater. Sci. 1995, (195): 169-178.

[2] H. Song and R.L. Coble. J. Am. Ceram. Soc. 1990, 73 (7): 2077-(2085).

[3] J.D. Powers and A.M. Glaeser. J. Ceram. Eng. Sci. Proc. 1997, 18 (5): 617-623.

[4] Y.M. Kim,S. H. Hong and D.Y. Kim. J. Am. Ceram. Soc. 2000, 83(11): 2809.

[5] H.X. Zhai. J. Am. Ceram. Soc. 2000, 83(8): 2006-(2016).

[6] F. Ye, T.C. Lei and Y.C. Zhao. J. Mater . Sci. 1997, 32: 3249.

[7] L. An, S. Wu and H.M. Chan , et al. J. Mater. Res. 1997, 12 (12) : 3300 -3306.

[8] I. Bae and S. Baik. J. Am. Ceram. Soc . 1997, 80 (5) : 1149-1156.

[9] J. Tartai and G.L. Messing. J. Europ. Ceram. Soc . 1997, 17: 719 -725.

[10] Y. Yoshizawa, M. Toriyama and S. Kanzaki. J. Ceram. Soc. Jpn. 1998, 106 (12): 1172 -1177.

In order to see related information, you need to Login.