Co 2+ ‐Substitution Effect in Ce‐TZP/La M‐type Hexaferrite Composites | Zendy

Kojima Takashi | Zendy; Sakamoto Wataru | Zendy; Yogo Toshinobu | Zendy; Fujii Takashi | Zendy; Hirano Shinichi | Zendy

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Co 2+ ‐Substitution Effect in Ce‐TZP/La M‐type Hexaferrite Composites

Author(s) -

Kojima Takashi,

Sakamoto Wataru,

Yogo Toshinobu,

Fujii Takashi,

Hirano Shinichi

Publication year - 2000

Publication title -

journal of the american ceramic society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.9

H-Index - 196

eISSN - 1551-2916

pISSN - 0002-7820

DOI - 10.1111/j.1151-2916.2000.tb01186.x

Subject(s) - sintering , materials science , composite number , composite material , flexural strength , nuclear chemistry , analytical chemistry (journal) , chemistry , chromatography

A Ce‐TZP/platelike La(Co(Fe 0.9 Al 0.1 ) 11 )O 19 composite was synthesized in situ while sintering from a mixture of Ce‐TZP, La(Fe 0.9 Al 0.1 )O 3 , Fe 2 O 3 , Al 2 O 3 , and CoO powders. Platelike La(Co(Fe 0.9 Al 0.1 ) 11 )O 19 crystals were grown in a dense Ce‐TZP matrix after sintering at temperatures of 1200°–1350°C. The temperature range for sintering Ce‐TZP/La(Fe,Al) 12 O 19 composites was expanded widely by substituting Co 2+ ions for Fe 2+ ions in its structure. The highest value of the bending strength of the Ce‐TZP/La(Co(Fe 0.9 Al 0.1 ) 11 )O 19 composites was 880 MPa, which was higher than that of the Ce‐TZP/La(Fe,Al) 12 O 19 composite (780 MPa) and Ce‐TZP (513 MPa). The saturation magnetization of the Ce‐TZP/La(Co(Fe 0.9 Al 0.1 ) 11 )O 19 composite was a constant value of 7.7 emu/g after the composite was sintered at 1200°–1350°C.

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