TEM and SNMS studies on the oxidation behaviour of NiCrAlY-based coatings

被引：17

作者：

Clemens, D ^{[1
]}

Vosberg, VR ^{[1
]}

Penkalla, HJ ^{[1
]}

Breuer, U ^{[1
]}

Quadakkers, WJ ^{[1
]}

Nickel, H ^{[1
]}

机构：

[1] FORSCHUNGSZENTRUM JULICH, CENT CHEM DEPT, D-52425 JULICH, GERMANY

来源：

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1997年 / 358卷 / 1-2期

关键词：

ALLOYS; GROWTH; SCALES; OXIDE; LAYERS;

D O I：

10.1007/s002160050361

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The effect of minor Ti additions content (0% Ti, 0.4% Ti, 1% Ti, 2% Ti) on the oxidation behaviour of Ni-20Cr-10Al-0.4Y (in weight-%) model alloys was investigated in the temperature range 950 degrees C to 1100 degrees C up to 200 h in Ar - 20% O-2, Alloy microstructure, oxide scale morphology and microstructure of the scale were characterized by SEM/EDX and TEM, The growth mechanisms of the alumina scales formed on the model alloys were studied by two-stage oxidation experiments with O-18(2)-tracer and subsequent SNMS-analyses. The microstructural observations were correlated with the oxide scale properties in respect to growth rates and spalling resistance, which was tested during cyclic oxidation.

引用

页码：122 / 126

页数：5

共 18 条

[1]

Clemens D, 1996, FRESEN J ANAL CHEM, V355, P703

[2]

CLEMENS D, 1996, 9 C EL MICR SOL KRAK, P435

[3]

CZYRSKAFILEMONO.A, 1993, C MICR OX CAMBR, P387

[4] CONVOLUTION AND SPALLATION OF OXIDES FORMED ON FE-AL ALLOYS AFTER SHORT OXIDATION TIMES [J].

FOX, P ;

TATLOCK, GJ .

MATERIALS SCIENCE AND TECHNOLOGY, 1988, 4 (05) :439-445

[5] THE EFFECT OF REACTIVE ELEMENT ADDITIONS ON THE SELECTIVE OXIDATION, GROWTH AND ADHESION OF CHROMIA SCALES [J].

HOU, PY ;

STRINGER, J .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1995, 202 (1-2) :1-10

[6]

Huntz A. M., 1989, ROLE ACTIVE ELEMENTS, P81

[7]

LAVENDEL HW, 1975, JOM-J MET, V27, P4

[8]

PENKALLA HJ, 1996, 9 C EL MICR SOL KRAK, P431

[9]

PETERS J, 1984, WERKST KORROS, V35, P385

[10] O-18/SIMS CHARACTERIZATION OF THE GROWTH-MECHANISM OF DOPED AND UNDOPED ALPHA-AL2O3 [J].

PINT, BA ;

MARTIN, JR ;

HOBBS, LW .

OXIDATION OF METALS, 1993, 39 (3-4) :167-195

← 1 2 →