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Compressive Creep and Oxidation Resistance of an Si 3 N 4 Material Fabricated in the System Si 3 N 4 ‐Si 2 N 2 O‐Y 2 Si 2 O 7
Author(s) -
Lange F. F.,
Davis B.I.,
Graham Henry C.
Publication year - 1983
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1983.tb10086.x
Subject(s) - creep , materials science , composite material , compressive strength
The compressive creep behavior and oxidation resistance of an Si 3 N 4 /Y 2 Si 2 O 7 material (0.85Si 3 N 4 +0.10SiO 2 +0.05Y 2 O 3 ) were determined at 1400°C. Creep re sistance was superior to that of other Si 3 N 4 materials and was significantly in creased by a preoxidation treatment (1600°C /120 h). An apparent parabolic rate constant of 4.2 × 10 −11 kg 2 ·m‐ 4 ·s −1 indicates excellent oxidation resistance.