| Description |
vii, 51 leaves, 16 figures : illustrations ; 29 cm |
| Summary |
"Compressive creep measurements were made on two groups of mullites at temperatures between 1455°C and 1520°C. The first group consisted of commercially manufactured mullites. The second group was made up of 7 different mullite compositions spanning the alumina-silica solid solution range from 3Al₂O₃ · 2SiO₂ to 2Al₂O₃ · SiO₂ . Thermal activation energies and stress exponents were calculated for the mullites in the second group. Steady state strain rates taken at 1460°C under loads of 100 and 110 psi varied between 1.3x10⁻⁴ in/in/hr and 15.4x10⁻⁴ in/in/hr. Activation energies were between 109 Kcal/mole and 204 Kcal/mole. Stress exponents calculated from data taken at 1460°C under loads of 20 to 410 psi ranged between 0.59 and 1.54"--Abstract, leaf iii. |
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