Grain boundary migration in cubic zirconia-yttria induced by addition of magnesia at varying concentrations

Journal Article · Thu Oct 01 04:00:00 EDT 1992 · Journal of the American Ceramic Society; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1992.tb05485.x· OSTI ID:7140280

Jeong, J W ^[1]; Yoon, D Y; Lee, J Y ^[2]; Kim, D Y ^[3]

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1. Electronic Materials Research Lab., Research Center, Oriental Chemical Industries, Inchon (Korea, Republic of)
2. Dept. of Materials Science and Engineering, Korea Advanced Inst. of Science and Engineering, Taejeon (Korea, Republic of)
3. Dept. of Inorganic Materials Engineering, College of Engineering, Seoul National Univ., 151 Seoul (Korea, Republic of)

This paper reports that when partially sintered cubic ZrO[sub 2]-10 mol % Y[sub 2]O[sub 3] specimens are heat-treated at 1500[degrees] C with powder mixtures of MgO and ZrO[sub 2]-10Y[sub 2]O[sub 3] at varying ratios, the grain boundaries migrate, leaving behind new solid solutions enriched with MgO but depleted of Y[sub 2]O[sub 3]. With increasing MgO content in the solute source powder, the average migration velocity increases, and the MgO content increases and the Y[sub 2]O[sub 3] content decreases slightly in these new solid solutions. With increasing MgO content in the solute source, the grain boundaries tend to be corrugated and faceted. Migration reversal is also observed at the corrugated boundaries. These variations of the grain boundary migration behavior with the MgO content in the solute source are consistent with the diffusional coherency strain energy as the driving force for the migration.

• OSTI ID: 7140280
• Journal Information: Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 75:10; ISSN 0002-7820; ISSN JACTAW
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360203 -- Ceramics
Cermets
& Refractories-- Mechanical Properties
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
CONCENTRATION RATIO
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
DIFFUSION
DISPERSIONS
FABRICATION
GRAIN BOUNDARIES
HEAT TREATMENTS
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MICROSTRUCTURE
MIXTURES
OXIDES
OXYGEN COMPOUNDS
POWDERS
SINTERING
SOLID SOLUTIONS
SOLUTES
SOLUTIONS
STRAINS
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K
TRANSITION ELEMENT COMPOUNDS
VARIATIONS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES