NIST Standard Reference Database 138
Last Update to Data Content: 1998
Reference: NIST Structural Ceramics Database
Other material collections: Property Data Summaries
Other Toughness materials
[Ref. 1,a] [Ref. 1,b] [Ref. 2,3] [Ref. 4]
Manufacturer........: Thermal Syndicate Ltd. Eastman Kodak Unknown Norton
Material Designation: magnesium oxide magnesium oxide magnesium oxide magnesium oxide
Material Form.......: Polycrystal Polycrystal Polycrystal Single Crystal
Composition.........: MgO MgO MgO MgO
Processing..........:
[Ref. 5]
Manufacturer........: In laboratory
Material Designation: magnesium oxide
Material Form.......: polycrystal
Composition.........: MgO
Processing..........: hot pressed
[1] F. J. P. Clarke, H. G. Tattersall, and G. Tappin, "Toughness of Ceramics and Their Work of Fracture," Proceedings of the British Ceramic Society, Vol. 6, 163-172 (1966).
[2] R. W. Rice, S. W. Freiman, and P. F. Becher, "Grain-Size Dependence of Fracture Energy in Ceramics: I, Experiment" Journal of the American Ceramic Society, Vol. 64, No. 6, pp. 345-350 (1981).
[3] J. B. Kessler, J. E. Ritter, and R. W. Rice, "The Effects of Microstructure on the Fracture Energy of Hot Pressed MgO" Surface and Interface of Glasses and Ceramics", pp. 529-544 (1974
[4] J. J. Mecholsky, S. W. Freiman, and R. W. Rice, "Fracture Surface Analysis of Ceramics" Journal of Materials Science, 11, pp. 1310-1319 (1976
[5] K. Yasuda, S. D. Kim, Y. Kanemichi, Y. Matsuo, and S. Kimura, "Influence of Grain Size and Temperature On Fracture Toughness of MgO Sintered Bodies," Journal of the Ceramic Society of Japan, Int. Edition, Vol. 98, pp. 44-49 (1990).
Temperature = 23 °C
Grain Porosity Fracture Fracture Measurement Measurement Comments
Size Toughness Energy Method Environment
[µm] [%] [MPa·m1/2] [J/m2]
------ -------- ------------ --------- ----------- ----------- --------------------------------
10 16 WOF air Ref. 1,a
50 19.5 WOF 1,a
100 35 WOF 1,a
7 4.2 WOF 1,b
13 8.9 WOF 1,a
23 16 WOF 1,a
38 17 WOF 1,b
130 14 WOF 1,a
150 7.9 WOF 1,a
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1 6 AMDCB air Ref. 2
10 18 AMDCB
15 14 AMDCB
30 4 AMDCB
75 11 AMDCB
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6 0.95 WOF air Ref. 3; Up to 1.0% porosity
13 0.9 WOF Up to 1.0% porosity
30 22 WOF Up to 1.0% porosity
55 21 WOF Up to 1.0% porosity
95 29 WOF Up to 1.0% porosity
10 11 WOF Less than 0.1% porosity
100 11 WOF Less than 0.1% porosity
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3 AMDCB air Ref. 4; {100} plane; E = 280 GPa
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10 1.8 CNB air Ref. 5
28 1.6 CNB
58 1.3 CNB
90 2.0 CNB
139 1.9 CNB
188 2.0 CNB
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