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Translucent Al 2 O 3 /LaAl 11 O 18 Composite
Author(s) -
Yamashita Isao,
Tsukuma Koji,
Kusunose Takafumi
Publication year - 2009
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.1551-2916.2009.03145.x
Subject(s) - hot isostatic pressing , materials science , fracture toughness , composite material , flexural strength , composite number , refractive index , microstructure , phase (matter) , chemistry , optoelectronics , organic chemistry
A translucent alumina composite containing 1 vol% LaAl 11 O 18 , prepared by the hot isostatic pressing (HIP) method, displays both high translucency and high fracture toughness. Its total forward transmission at 600 nm is 75% (thickness 1 mm), and its bending strength and fracture toughness are estimated to be 574±15 MPa and 5.9±0.46 MPa·m 0.5 , respectively. Its high translucency is due to the similarity of refractive index between the additive phase (LaAl 11 O 18 ) and the matrix (alumina).