Mechanical properties of hot isostatically pressed zirconia (2 mol% yttria)-reinforced molybdenum disilicide composite

Journal Article · Sat Jul 01 00:00:00 EDT 1995 · Materials Research Bulletin

DOI:https://doi.org/10.1016/0025-5408(95)00073-9· OSTI ID:99247

Yamada, Toshihiro; Hirota, Ken; Yamaguchi, Osamu ^[1]; Asai, Junji; Makiyama, Yukio ^[2]

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1. Doshisha Univ., Kyoto, Tanabe (Japan)
2. Taiyo Koko Co. Ltd., Hyogo, Ako (Japan)

Dense sintered composites of ZrO{sub 2} (2 mol% Y{sub 2}O{sub 3}) and MoSi{sub 2} have been fabricated by hot isostatic pressing for 2 h at 1400 C under 196 MPa. The ZrO{sub 2} particles in the composites consist of only t-ZrO{sub 2}. There is no reaction between ZrO{sub 2} and MoSi{sub 2}. Microstructures and mechanical properties are examined, in connection with increased ZrO{sub 2} content. The fracture toughness and bending strength of the composite with 40 mol% ZrO{sub 2} addition are 6.18 MPa{center_dot}m{sup 1/2} and 1034 MPa, respectively.

• OSTI ID: 99247
• Journal Information: Materials Research Bulletin, Vol. 30, Issue 7; Other Information: PBD: Jul 1995
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPOSITE MATERIALS
HOT PRESSING
MICROSTRUCTURE
MECHANICAL PROPERTIES
ZIRCONIUM OXIDES
YTTRIUM OXIDES
MOLYBDENUM SILICIDES
INTERMETALLIC COMPOUNDS
FRACTURE PROPERTIES
FLEXURAL STRENGTH