ATOM PROBE CHARACTERIZATION OF ISOTROPIC SPINODAL DECOMPOSITIONS - SPATIAL CONVOLUTIONS AND RELATED BIAS

被引：31

作者：

DANOIX, F

AUGER, P

BOSTEL, A

BLAVETTE, D

机构：

[1] Laboratoire de Microscopie Ionique, URA CNRS 808, UFR Sciences, 76134 Mont Saint Aignan

来源：

SURFACE SCIENCE | 1991年 / 246卷 / 1-3期

关键词：

D O I：

10.1016/0039-6028(91)90424-Q

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The present study aims at characterizing the amplitude of chromium concentration fluctuations which occur in the spinodally decomposed ferrite phase of a duplex stainless steel. Measured amplitudes are shown to be dependent on both the value of the analysis diameter and the sampling depth as compared with the characteristic lengths of concentration fluctuations. A theoretical model has been designed in order to quantify this dependence. It takes into account axial smoothing, associated with depth sampling, and radial convolution, related to the analysed area which have been studied as a function of different analysis conditions. Optimized analysis parameters are deduced and the corresponding attenuation factor, relative to amplitude measurement, is calculated.

引用

页码：260 / 265

页数：6

共 6 条

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[5]

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