OBSERVATIONS OF CHROMIUM-OXIDE FILMS CONTAINING CERIUM AND YTTRIUM USING TRANSMISSION ELECTRON-MICROSCOPY

被引：16

作者：

DOWNHAM, DA ^{[1
]}

SHENDYE, SB ^{[1
]}

机构：

[1] OREGON GRAD INST SCI & TECHNOL,DEPT MAT SCI & ENGN,PORTLAND,OR 97291

来源：

OXIDATION OF METALS | 1995年 / 43卷 / 5-6期

关键词：

CERIUM ORTHOCHROMITE; YTTRIUM ORTHOCHROMITE; LANTHANUM ORTHOCHROMITE; REACTIVE ELEMENT EFFECT;

D O I：

10.1007/BF01046891

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Samples of a pure Fe-26%Cr alloy were sputter-coated with a 4-nm layer of CeO2 or Y2O3, then oxidized at 900 degrees C in 5x10(-3) torr of oxygen. The oxide scale was removed from the substrate by dissolution of the alloy substrate in a solution of iodine in anhydrous methanol and examined in a transmission electron microscope to determine the microstructure of the oxide and the phases present in the scab. The phases CeCrO3 (space group 62, Pnma and space group 221, Pm (3) over bar m), YCrO3 (space group 62, Pnma), and Y2O3 (space group 164, P (3) over bar m1) were found in the oxide scale in the initial stages of oxidation. The relevance of these species in the reactive-element effect is discussed.

引用

页码：411 / 433

页数：23

共 13 条

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[12] CHARACTERIZATION OF NI-25 WT.PERCENT CR ALLOYS CONTAINING REACTIVE ELEMENTS AND THE OXIDE SCALES GROWN ON THEM AT HIGH-TEMPERATURES - USING TRANSMISSION ELECTRON-MICROSCOPY [J].

SHENDYE, SB ;

DOWNHAM, DA .

OXIDATION OF METALS, 1995, 43 (5-6) :435-457

[13] ON THE ROLE OF LANTHANUM, SILICON AND MANGANESE DURING HIGH-TEMPERATURE OXIDATION OF A WROUGHT NICKEL-BASE ALLOY [J].

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