Strength, fracture toughness, and acoustic emission of ceramics based on partially stabilized zirconium dioxide
Abstract
A study is made of the mechanical behavior of ceramics based on ZrO2: a ceramic partially stabilized with MgO and a tetragonal polycrystalline ceramic with an addition of Y2O3. It is shown that the Y2O3-stabilized ceramic is linearly elastic, is characterized by a plane R-curve, and exhibits the fracture barrier effect. The ceramic with MgO is inelastic, has an increasing R-curve, and does not exhibit the fracture barrier effect. Data is obtained on acoustic emission in a study of the ceramics, the sources of the emissions being both microscopic and macroscopic defects.
Keywords
Dioxide Zirconium Fracture Toughness Mechanical Behavior Acoustic Emission
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
Preview
Unable to display preview. Download preview PDF.
Literature cited
- 1.M. V. Swain, “Limitation of maximum strength of zirconia-toughened ceramics by transformation toughening increment,” J. Am. Ceram. Soc.,68, No. 4, 97–99 (1985).Google Scholar
- 2.K. Tsukuma, “Mechanical properties and thermal stability of CeO2 containing tetragonal zirconia polycrystal,” Am. Ceram. Soc. Bull.,65, No. 10, 1386–1389 (1986).Google Scholar
- 3.A. G. Gashchenko, G. A. Gogotsi, A. G. Karaulov, and I. N. Rudak, “Study of the fracture toughness and mechanical characteristics of materials based on zirconium dioxide,” Probl. Prochn., No. 6, 76–80 (1974).Google Scholar
- 4.R. Carvie, R. H. J. Hannik, and R. T. Pasco, “Ceramic steel,” Nature, No. 258, 703–704 (1975).Google Scholar
- 5.G. A. Gogotsi, “The problem of certifying the strength indices of an engineering ceramic,” Vestn. Mashinostr., No. 8, 27–33 (1989).Google Scholar
- 6.G. A. Gogotsi, “Mechanical behavior of a ceramic which does not conform to Hooke's law,” Poroshk. Metall., No. 11, 79–85 (1988).Google Scholar
- 7.M. V. Swain, “Inelastic deformation of Mg-PSZ and its significance for strength-toughness relationship of zirconia toughened ceramics,” Acta Metall.,33, No. 11, 2083–2091 (1985).Google Scholar
- 8.R. Carvie, “Structural application of ZrO2-bearing materials: Advance in ceramics,” Am. Ceram. Soc., 465–479 (1983).Google Scholar
- 9.G. A. Gogotsi, V. P. Zavada, A. I. Fesenko, and V. I. Galenko, “Fracture toughness of a ceramic based on zirconia,” Submitted to VINITI 25.04.89, No. 2690-B89 (1989).Google Scholar
- 10.G. A. Gogotsi, Yu. I. Komolikov, D. Yu. Ostrovoi, et al., “Strength and fracture toughness of a ceramic based on zirconia,” Probl. Prochn., No. 1, 50–53 (1988).Google Scholar
- 11.T. Kobayashi, K. Matunuma, H. Ikawa, and K. Motoyoshi, “Measurement of fracture toughness and effect of loading rate on its value in PSZ and Si3N4 ceramics,” J. Jpn. Inst. Met.,51, No. 8, 723–729 (1987).Google Scholar
- 12.D. B. Marshall and M. V. Swain, “Crack resistance curves in magnesia-partially stabilized zirconia,” J. Am. Ceram. Soc.,71, No. 6, 399–407 (1988).Google Scholar
- 13.S. J. Burns and M. V. Swain, “Fracture toughness of MgO partial-stabilized ZrO2 specimens with KR-curve behavior from transformation toughening,” ibid., No. 3,69, 226–230 (1986).Google Scholar
- 14.A. Michelmore, S. Ryan, and R. Vallee, “MgO PSZ (a versatile high tech ceramic). Property values: Potential applications,” SAE Tech. Pap., No. 860733 (1986).Google Scholar
Copyright information
© Plenum Publishing Corporation 1991