Effect of alumina on sintering behavior and electrical conductivity of high-purity yttria-stabilized zirconia

Journal Article · Mon Aug 01 00:00:00 EDT 1994 · Journal of the American Ceramic Society; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1994.tb07124.x· OSTI ID:6889476

Mori, Masashi; Yoshikawa, Masahiro; Itoh, Hibiki; Abe, Toshio ^[1]

---

1. Central Research Inst. of Electric Power Industry, Kanagawa (Japan). Chemical Power Generation Group

The sintering behavior and electrical conductivity of high-purity 8-mol% Y[sub 2]O[sub 3]-stabilized ZrO[sub 2] (8YSZ) with Al[sub 2]O[sub 3] additions were investigated. The addition of 1 wt% Al[sub 2]O[sub 3] to 8YSZ provided dense, sintered samples with 94% relative density at 1,400 C without a holding time. Addition of 1 wt% SiO[sub 2] enhanced the sinterability of 8YSZ. Na[sub 2]O addition of 0.1 wt% remarkably lowered it. Electrical conductivity at 1,000 C in air increased slightly with increased Al[sub 2]O[sub 3] content up to 1 wt% and then monotonously decreased. 8YSZ with 1 wt% Al[sub 2]O[sub 3] showed the maximum conductivity of 0.16 S/cm at 1,000 C.

• OSTI ID: 6889476
• Journal Information: Journal of the American Ceramic Society; (United States), Vol. 77:8; ISSN 0002-7820
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM OXIDES
METALLURGICAL EFFECTS
YTTRIUM OXIDES
ELECTRIC CONDUCTIVITY
SINTERING
ZIRCONIUM OXIDES
EXPERIMENTAL DATA
SILICON OXIDES
SODIUM OXIDES
ALKALI METAL COMPOUNDS
ALUMINIUM COMPOUNDS
CHALCOGENIDES
DATA
ELECTRICAL PROPERTIES
FABRICATION
INFORMATION
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SILICON COMPOUNDS
SODIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
ZIRCONIUM COMPOUNDS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication
360204 - Ceramics
Cermets
& Refractories- Physical Properties