Hot Isostatic Pressing of Submicron La2Zr2O7 Powder Prepared by the Hydrazine Method.
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- Matsumura Y.
- Faculty of Engineering, Doshisha University
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- Yoshinaka M.
- Faculty of Engineering, Doshisha University
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- Hirota K.
- Faculty of Engineering, Doshisha University
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- Yamaguchi O.
- Faculty of Engineering, Doshisha University
Bibliographic Information
- Other Title
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- Hot Isostatic Pressing of Submicron La2
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Abstract
In the ZrO2-La2O3 system, metastable c-ZrO2 solid solutions (ss) containing up to ≈27 mo1% La2O3 crystallize at low temperatures from amorphous materials prepared by the hydrazine method The formation of La2Zr2O7 proceeds via two reaction processes; (i) decomposition of c-ZrO2 (ss) (c-ZrO2 (ss) → La2Zr2O7 + t-ZrO2) above 1100°C and (ii) asolid-state reaction of t-ZrO2 and La2O3 at 1200° to 1300°C. Submicron La2Zr2O7 powder is producedat 1300°C. Dense La2Zr2O7 ceramics (99. 5% of theoretical) with an average grain size of 10 μm have been fabricated by hot isostatic pressing (1500°C/2h/196MPa). Their fracture toughness and bending strength are 1. 9 MPa-m1/2 and 172 MPa, respectively. They exhibit an electrical conductivity of 1. 5x10-1 S-m-1 at 1000°C.
Journal
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- The Review of High Pressure Science and Technology
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The Review of High Pressure Science and Technology 7 1063-1065, 1998
The Japan Society of High Pressure Science and Technology
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Details 詳細情報について
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- CRID
- 1390001204382437888
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- NII Article ID
- 10002692813
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- NII Book ID
- AN10452913
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- ISSN
- 13481940
- 0917639X
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- NDL BIB ID
- 4494148
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed
