Hot isostatic pressing of TiB{sub 2}-ZrO{sub 2}(2 mol% Y{sub 2}O{sub 3}) composite powders

Journal Article · Mon Jul 01 00:00:00 EDT 1996 · Materials Research Bulletin

DOI:https://doi.org/10.1016/0025-5408(96)00069-4· OSTI ID:271615

Muraoka, Yoshiyuki; Yoshinaka, Masaru; Hirota, Ken; Yamaguchi, Osamu ^[1]

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1. Doshisha Univ., Tanabe, Kyoto (Japan)

Dense sintered composites of TiB{sub 2} and ZrO{sub 2}(2 mol% Y{sub 2}O{sub 3}) have been fabricated by hot isostatic pressing for 2 h at 1,500 C under 196 MPa. The ZrO{sub 2} particles in the composites consist of m- {much_gt} t-ZrO{sub 2}. There is no reaction between TiB{sub 2} and ZrO{sub 2}. Microstructures and mechanical properties are examined, in connection with increased ZrO{sub 2} content. The fracture toughness and bending strength of the composites with 30 mol% ZrO{sub 2} content are 11.2 MPa{center_dot}m{sup 1/2} and 680 MPa, respectively.

• OSTI ID: 271615
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 7 Vol. 31; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BULK DENSITY
CHEMICAL COMPOSITION
COMPOSITE MATERIALS
FLEXURAL STRENGTH
FRACTURE PROPERTIES
HARDNESS
HOT PRESSING
INTERMETALLIC COMPOUNDS
MECHANICAL PROPERTIES
MICROSTRUCTURE
PARTICLE SIZE
SCANNING ELECTRON MICROSCOPY
TITANIUM BORIDES
X-RAY DIFFRACTION
YTTRIUM OXIDES
ZIRCONIUM OXIDES