Transition in high-temperature oxidation kinetics of Pd-modified aluminide coatings: Role of oxygen partial pressure, heating rate, and surface treatment

被引:40
作者
Monceau, D [1 ]
Bouhanek, K [1 ]
Peraldi, R [1 ]
Malie, A [1 ]
Pieraggi, B [1 ]
机构
[1] ENSCT, CIRIMAT UMR 5085, F-31077 Toulouse 4, France
关键词
D O I
10.1557/JMR.2000.0099
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The isothermal oxidation of Pd-modified Ni aluminide coatings was studied as a function of P-O2 and temperature (900-1200 degrees C). A kinetic transition was observed between 900 and 1000 degrees C. Grazing incident x-ray diffraction, thermogravimetric analysis, x-ray photoelectron spectroscopy, scanning electron microscopy/energy dispersive spectroscopy, and secondary ion mass spectrometry analyses are consistent with the growth of delta-alumina or alpha-alumina below or above this transition temperature. Moreover, because P-O2 was established before specimen heating, an effect of heating rate was observed and analyzed. More importantly, no kinetic transition was observed for sand-blasted specimens oxidized at low P-O2. Thus conditions for the direct growth of an alpha-alumina scale could be determined from the reported results.
引用
收藏
页码:665 / 675
页数:11
相关论文
共 33 条
[21]   OXIDATION-BASED MODEL FOR THERMAL BARRIER COATING LIFE [J].
MILLER, RA .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1984, 67 (08) :517-521
[22]   Determination of parabolic rate constants from a local analysis of mass-gain curves [J].
Monceau, D ;
Pieraggi, B .
OXIDATION OF METALS, 1998, 50 (5-6) :477-493
[23]  
PINT B, 1997, P THERM BARR COAT WO, P109
[24]   EFFECT OF THE THETA-ALPHA-AL2O3 TRANSFORMATION ON THE OXIDATION BEHAVIOR OF BETA-NIAL+ZR [J].
RYBICKI, GC ;
SMIALEK, JL .
OXIDATION OF METALS, 1989, 31 (3-4) :275-304
[25]   THERMAL BARRIER COATINGS WITH IMPROVED OXIDATION RESISTANCE [J].
SCHMITTTHOMAS, KG ;
DIETL, U .
SURFACE & COATINGS TECHNOLOGY, 1994, 68 :113-115
[26]   INFLUENCE OF COATINGS AND HOT CORROSION ON THE FATIGUE BEHAVIOR OF NICKEL-BASED SUPER-ALLOYS [J].
SCHNEIDER, K ;
VONARNIM, H ;
GRUNLING, HW .
THIN SOLID FILMS, 1981, 84 (01) :29-36
[27]  
SHAEFFER JC, 1997, P THERM BARR COAT WO, P99
[28]   A NOVEL MARKER FOR THE DETERMINATION OF TRANSPORT NUMBERS DURING ANODIC BARRIER OXIDE-GROWTH ON ALUMINUM [J].
SHIMIZU, K ;
KOBAYASHI, K ;
THOMPSON, GE ;
WOOD, GC .
PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1991, 64 (03) :345-353
[29]  
SHINOHARA K, 1982, Z METALLKD, V73, P774
[30]   OXIDE MORPHOLOGY AND SPALLING MODEL FOR NIAL [J].
SMIALEK, JL .
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1978, 9 (03) :309-320