Quantification of interfacial segregation by analytical electron microscopy

被引：0
作者：
Müllejans, Harald [1 ]
机构：
[1] Renewable energies, Inst. for Environ. and Sustainabil., European Commission - DG JRC, Ispra
来源：
Zeitschrift fuer Metallkunde/Materials Research and Advanced Techniques | 2003年 / 94卷 / 03期
关键词：
Analytical; Dedicated scanning transmission electron microscopy; Electron microscopy; Interfacial segregation; Quantification; Spatial difference;
D O I：
10.3139/146.030298
中图分类号：
学科分类号：
摘要：
The quantification of interfacial segregation by spatial difference and one-dimensional profiling is presented in general where special attention is given to the random and systematic uncertainties. The method is demonstrated for an example of Al-Al2O3 interfaces in a metal-ceramic composite material investigated by energy-dispersive X-ray spectroscopy and electron energy loss spectroscopy in a dedicated scanning transmission electron microscope. The variation of segregation measured at different interfaces by both methods is within the uncertainties, indicating a constant segregation level and interfacial phase formation. The most important random uncertainty is the counting statistics of the impurity signal whereas the specimen thickness introduces systematic uncertainties (via k factor and effective scan width). The latter could be significantly reduced when the specimen thickness is determined explicitly.
引用
收藏
页码：298 / 306
页数：8
相关论文
共 42 条
[11]  
Kaplan W.D., Mullejans H., Ruhle M., Com. Eur. Soc. Micr. (Ed.), Microscopy, Vol. 2: Mater. Sci., (1998)
[12]  
Hunt J.A., Williams D.B., Ultramicrosc., 38, (1991)
[13]  
Duscher G., Thomas J., Mullejans H., Ruhle M., Com. Eur. Soc. Micr. (Ed.), Microscopy, Vol. 1: Techn. Instrument., (1998)
[14]  
French R.H., Mullejans H., Jones D.J., Duscher G., Cannon R.M., Ruhle M., Acta Mater., 46, (1998)
[15]  
Cliff G., Lorimer G.W., J. Microsc., 103, (1975)
[16]  
Mullejans H., Thomas J., Kienzle O., Griffiths M., Ruhle M., Micr. Microanal. 1997, 3, (1997)
[17]  
Berger S.D., Pennycook S.J., Nature, 298, (1982)
[18]  
Chiang Y.M., Silverman L.A., French R.H., Cannon R.M., J. Am. Ceram. Soc., 77, (1994)
[19]  
Bruley J., Philos. Mag. Lett., 66, (1992)
[20]  
Bruley J., Microsc. Microanal. Microstr., 4, (1993)
12345