Development of fibrous monoliths from mullite, alumina, and zirconia powders

Conference · Thu Jun 29 04:00:00 EDT 2000

OSTI ID:759053

Polzin, B J; Cruse, T A; Singh, D; Picciolo, J J; Tsaliagos, R N; Phelan, P J; Goretta, K C

Fibrous monoliths (FMs) based on mullite combined with Al{sub 2}O{sub 3} and Y{sub 2}O{sub 3}-stabilized ZrO{sub 2} have been produced. These FMs incorporate duplex cells in which compressive residual stresses were engineered into the surfaces of the cells. The residual stresses should increase average cell strength, which may allow them to achieve mechanical properties comparable to those of Si{sub 3}N{sub 4}/BN FMs. The expected residual stresses have been calculated, and data on sintering and thermal expansion have been gathered. Prototype FMs were produced and their microstructure examined.

• Research Organization: Argonne National Lab., IL (US)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 759053
• Report Number(s): ANL/ET/CP-100561
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM OXIDES
CERAMICS
FABRICATION
FIBERS
MECHANICAL PROPERTIES
MICROSTRUCTURE
MULLITE
RESIDUAL STRESSES
SINTERING
THERMAL EXPANSION
YTTRIUM OXIDES
ZIRCONIUM OXIDES