Synthesis of transparent Nd-doped HfO{sub 2}-Y{sub 2}O{sub 3} ceramics using HIP

Journal Article · Thu Feb 01 04:00:00 EST 1996 · Journal of the American Ceramic Society

DOI:https://doi.org/10.1111/j.1151-2916.1996.tb08129.x· OSTI ID:211694

Ikesue, Akio ^[1]; Kamata, Kiichiro ^[2]; Yoshida, Kunio ^[3]

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1. Krosaki Corp., Kitakyushu (Japan). Technical Research Center
2. Nagaoka Univ. of Technology (Japan). Dept. of Material Science and Technology
3. Osaka Inst. of Tech. (Japan). Inst. of Laser Engineering

A Nd-doped HfO{sub 2}-Y{sub 2}O{sub 3} ceramic having excellent transmittance was synthesized by HIPing, using high-purity powders (> 99.99 wt%) of Y{sub 2}O{sub 3}, Nd{sub 2}O{sub 3}, and HfO{sub 2}. The mixed powder compacts of these powders were sintered at 1,650 C for 1 h under vacuum and HIPed at 1,700 C for 3 h under 196 MPa of Ar. The specimen after HIPing consisted of uniform grains measuring about 30 {micro}m and having pore-free structure. The optical transmittance of 1 at.% Nd-doped 2.6 mol % HfO{sub 2}-Y{sub 2}O{sub 3} ceramics ranging between visible and infrared wavelength was almost equivalent or superior to that of a Nd:Y{sub 2}O{sub 3} single crystal grown by the Verneuil method.

• Sponsoring Organization: USDOE
• OSTI ID: 211694
• Journal Information: Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 2 Vol. 79; ISSN 0002-7820; ISSN JACTAW
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BULK DENSITY
DOPED MATERIALS
GRAIN SIZE
HAFNIUM OXIDES
HOT PRESSING
LIGHT TRANSMISSION
NEODYMIUM OXIDES
POWDERS
SCANNING ELECTRON MICROSCOPY
TRANSMISSION ELECTRON MICROSCOPY
YTTRIUM OXIDES