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High Transparency Nd: Y 2 O 3 Ceramics Prepared with La 2 O 3 and ZrO 2 Additives
Author(s) -
Zhang Lei,
Huang Zuocai,
Pan Wei
Publication year - 2015
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/jace.13354
Subject(s) - materials science , sintering , ceramic , transparent ceramics , microstructure , fracture toughness , vickers hardness test , analytical chemistry (journal) , grain size , transmittance , homogeneous , mineralogy , composite material , chemistry , physics , thermodynamics , optoelectronics , chromatography
High transparency Nd: Y 2 O 3 ceramics were prepared by vacuum sintering with La 2 O 3 and ZrO 2 sintering additives. The optimum in‐line transmittance of the sintered Nd: Y 2 O 3 is 80.98% at the wavelength of 1100 nm, for which the content of La 2 O 3 and ZrO 2 are 10.0 and 3.0 at.%, respectively. This specimen demonstrates homogeneous microstructure with the average grain size of 8.3 μm. The mechanism of sintering with La 2 O 3 and ZrO 2 aids and the optical properties was discussed. The absorption, emission cross section, and fluorescence lifetime have been estimated as 1.62 × 10 −20 cm 2 , 5.13 × 10 −20 cm 2 , and 232 μs, respectively. Vickers hardness and the fracture toughness were measured of 9.18 GPa and 1.03 Mpa·m 1/2 , respectively. All the results indicate that Nd: Y 2 O 3 transparent ceramic is a promising candidate for laser material.