Effect of the Y2O3 Concentration in YSZ on the Thermophysical Property as a Thermal Shielding Material

被引：14

作者：

Sasaki, Kazuya ^{[1
]}

Terai, Takayuki ^{[1
,2
]}

Suzuki, Akihiro ^{[3
]}

Akasaka, Naoaki ^{[4
]}

机构：

[1] Univ Tokyo, Dept Nucl Engn & Management, Sch Engn, Bunkyo Ku, Tokyo 1138656, Japan

[2] Univ Tokyo, Inst Engn Innovat, Bunkyo Ku, Tokyo 1130032, Japan

[3] Univ Tokyo, Nucl Profess Sch, Naka, Ibaraki 3191188, Japan

[4] Japan Atom Energy Agcy, Oarai Res & Dev Ctr, Mat Monitoring Sect, Fuels & Mat Dept, Oarai, Ibaraki 3111393, Japan

来源：

INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2010年 / 7卷 / 04期

关键词：

YTTRIA-STABILIZED ZIRCONIA; SINGLE-CRYSTALS; HEAT-CAPACITY; HIGH-TEMPERATURE; GRAIN-SIZE; CONDUCTIVITY; DIFFUSIVITY; POROSITY; SYSTEM;

D O I：

10.1111/j.1744-7402.2009.02363.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effect of the Y2O3 concentration in yttria-stabilized zirconia (YSZ) on the thermophysical property of porous YSZ was studied. The specific heat capacities (C-p), the thermal diffusivity (alpha), the apparent density () of a 3 mol% Y2O3/97 mol% ZrO2 (3YSZ), and an 8 mol% Y2O3/97 mol% ZrO2 (8YSZ) were measured. The 8YSZ's C-p was lower than that of the 3YSZ. When the YSZs were dense, the 3YSZ's alpha value by a phonon decreased with an increase in the temperature, whereas that of the 8YSZ was almost constant over a wide temperature range. When the YSZs were porous, the 8YSZ's alpha value by the phonon was greater than that of the 3YSZ's.

引用

页码：518 / 527

页数：10

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