Plastic deformation of mullite/yttria composites. (in SPANISH)
Journal Article
·
· Bull. Spanish Soc. Ceram. Glasses
OSTI ID:949281
Mullite (3Al{sub 2}O{sub 3.2}SiO{sub 2}) based composites have excellent mechanical and thermal properties. The same characteristics that give mullite good resistance to plastic deformation also make its sintering difficult. Yttria is one of the most commonly used additives to reduce sintering temperatures in mullite. Additionally vitreous silicates (Y{sub 2}Si{sub 2}O{sub 7}) could improve ductility. In this work we have used mullite samples with various amounts of Y{sub 2}O{sub 3} (0, 5 and 9 wt.%). Details of processing and characterization of these composites have been the subject of a previous publication. We have compared the ductility of these composites by means of compressive deformation tests at elevated temperatures. Creep tests were performed at temperatures between 1300 and 1400 C, in air, in a stress range of 0.69 to 34.5 MPa.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- DOD; FOR
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 949281
- Report Number(s):
- ANL/ET/JA-39505
- Journal Information:
- Bull. Spanish Soc. Ceram. Glasses, Journal Name: Bull. Spanish Soc. Ceram. Glasses Journal Issue: 3 ; May/Jun. 2001 Vol. 40
- Country of Publication:
- United States
- Language:
- SPANISH
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