Nondestructive evaluation of the oxidation stresses through thermal barrier coatings using Cr3+ piezospectroscopy

被引：188

作者：

Christensen, RJ ^{[1
]}

Lipkin, DM ^{[1
]}

Clarke, DR ^{[1
]}

Murphy, K ^{[1
]}

机构：

[1] HOWMET CORP,CTR TECH,WHITEHALL,MI 49461

来源：

APPLIED PHYSICS LETTERS | 1996年 / 69卷 / 24期

关键词：

D O I：

10.1063/1.117182

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The stresses in the aluminum oxide formed during high-temperature oxidation of a bond-coated superalloy are shown to be measurable through zirconia thermal barrier coatings. The basis for the measurements is the piezospectroscopic shift in the R-line fluorescence (photoluminescence) from Cr3+ impurities incorporated into the growing aluminum oxide scale. Measurements through the thermal barrier coating are feasible because (partially stabilized) zirconia coating have some transparency at both the excitation and at fluorescence frequencies. (C) 1996 American Institute of Physics.

引用

页码：3754 / 3756

页数：3

共 7 条

[1] THE OXIDATION BEHAVIOR OF NIAL .1. PHASE-TRANSFORMATIONS IN THE ALUMINA SCALE DURING OXIDATION OF NIAL AND NIAL-CR ALLOYS [J].