Stabilization of ZrO$sub 2$ with CaO and MgO (in German)
Journal Article
·
· Ber. Deut. Keram. Ges., v. 50, no. 12, pp. 365-368
OSTI ID:4327519
Specimens of partially or completely stabilized zirconia were prepared using CaO, MgO, or a mixture of CaO and MgO as stabilizers. Thermal expansion data were used in determination of the minimum amount of stabilizer needed for complete stabilization and the amowt of cubic ZrO/sub 2/ in partially stabilized zirconia. It was found that the temperature of the tetragonalmonoclinic transition depends only slightly on the amount of stabilizer, but depends greatiy on the type of stabilizer. The formation temperature of cubic ZrO/sub 2/ in zirconia containing MgO was lowered by substituting CaO for a portion of the MgO. The overall expansion of zirconia bodies containing about 60 to 90% cubic ZrO/sub 2/ was determined to be about 5 to 7 x 10/sup -4/, indicating a high resistance to thermal shock. (GF)
- Research Organization:
- Government Industrial Research Inst., Nagoya, Japan
- NSA Number:
- NSA-29-021325
- OSTI ID:
- 4327519
- Journal Information:
- Ber. Deut. Keram. Ges., v. 50, no. 12, pp. 365-368, Journal Name: Ber. Deut. Keram. Ges., v. 50, no. 12, pp. 365-368; ISSN BDKGA
- Country of Publication:
- Germany
- Language:
- German
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Related Subjects
*CALCIUM OXIDES-- ADDITIVES
*MAGNESIUM OXIDES-- ADDITIVES
*ZIRCONIUM OXIDES-- STABILITY
CUBIC LATTICES
MONOCLINIC LATTICES
N50130* --Metals
Ceramics
& Other Materials--Ceramics & Cermets--Properties
Structure & Phase Studies
TETRAGONAL LATTICES
THERMAL EXPANSION
THERMAL SHOCK
TRANSITION TEMPERATURE
*MAGNESIUM OXIDES-- ADDITIVES
*ZIRCONIUM OXIDES-- STABILITY
CUBIC LATTICES
MONOCLINIC LATTICES
N50130* --Metals
Ceramics
& Other Materials--Ceramics & Cermets--Properties
Structure & Phase Studies
TETRAGONAL LATTICES
THERMAL EXPANSION
THERMAL SHOCK
TRANSITION TEMPERATURE