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oai:www.ideals.illinois.edu:2142/82712 2023-07-11 col_2142_5131 col_2142_13836 com_2142_5130 com_2142_13835 com_2142_234

Kriven, Waltraud M. Kim, Dong-Kyu 2015-09-25T20:52:35Z 2015-09-25T20:52:35Z 10000-01-01 2002 2002 Tough, oxide, laminated and fibrous monolithic composites were fabricated by using tape casting and co-extrusion technique, respectively. Mullite (3Al 2O3·2SiO2), alumina (Al2O 3), 50 vol% alumina · 50 vol% YAG (yttrium aluminum garnet, Y 3Al5O12) in situ composite, 50 vol% alumina · 50 vol% mullite in situ composite, zirconia (ZrO 2), and nickel aluminate (NiAl2O4) were used as matrix materials. Aluminum phosphate (AlPO4), alumina platelets, and 50 vol% alumina · 50 vol% leucite (KAlSi2O6) were chosen as high temperature applicable interphase materials. ICP (Inductively coupled plasma) data indicated no extensive decomposition of AlPO4 heat treated at 1600 and 1800°C. The AlPO4 worked as a stable, porous, weak, crack deflecting interphase material with three point bending strength of 1.5 MPa and 61% of theoretical density after heat treatment at 1600°C for 10h. The 50 vol% alumina · 50 vol% YAG in situ composite had a bending strength of 361 MPa after sintering at the condition of 1700°C/5h. A : B (C) : D (E) bimodal designs were proposed to increase the toughness of the laminated composites. 1 : 5 (6) : 12 (1) bimodal laminated composite had a bending strength and a work of fracture of 142 MPa and 0.51 KJ/m2, respectively. Fibrous monolithic composites with different interphase thickness and interphase composition were fabricated. 2-, 3- and mixed-layer fibrous monolithic composites were made. Made available in DSpace on 2015-09-25T20:52:35Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3044136.pdf: 7538919 bytes, checksum: e89421d0deae4289a31d88eb11b8c259 (MD5) Previous issue date: 2002 Embargo set by: Seth Robbins for item 83993 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 200 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2002. http://hdl.handle.net/2142/82712 (MiAaPQ)AAI3044136 eng Engineering, Materials Science Design of Sintered, Tough, Oxide Laminate and Fibrous Monolithic Composites text Materials Science and Engineering Materials Science and Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.