ELECTRICAL-CONDUCTIVITY OF AL2O3-FE+Y

被引：6

作者：

KORIPELLA, CR

KROGER, FA

机构：

[1] Univ of Southern California, Los, Angeles, CA, USA, Univ of Southern California, Los Angeles, CA, USA

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1986年 / 69卷 / 12期

关键词：

ELECTROLYTES; -; Performance; SUPERALLOYS; Oxidation;

D O I：

10.1111/j.1151-2916.1986.tb07389.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：

High-temperature dc electrical conductivity and emf of oxygen concentration cells with Al//2O//3 as the electrolyte were studied. The defect structure of alpha -Al//2O//3 doped with Fe and Y was investigated to test an explanation proposed for the favorable effect of Y addition to super alloys (Fe, Cr, Ni, Al) which leads to well-adherent and nonconvoluted Al//2O//3 oxide scales. Results indicate that Y is a singly ionizable donor in Al//2O//3 and Y additions are effective in compensating Fe acceptors in Al//2O//3 at iron concentrations up to the solubility limit of Y.

引用

页码：888 / 896

页数：9

共 31 条

[21]

KROGER FA, 1984, ADV CERAM, V10, P100

[22] ELECTRICAL-CONDUCTIVITY OF POLYCRYSTALLINE AL2O3 DOPED WITH SILICON [J].