| Mechanistic aspects of Pt-modified beta-NiAl alloy oxidation | |
| G. Smola; W. Wang; J. Jedlinski; B. Gleeson; K. Kowalski; A. Bernasik; M. Nocun | |
| 2009 | |
| Source Publication | Materials at High Temperatures
 |
| ISSN | 0960-3409 |
| Volume | 26Issue:3Pages:273-280 |
| Abstract | The effects of Pt addition (5, 10 and 15 at.%) on the high temperature oxidation behaviour of the intermetallic compound beta-NiAl were studied at 1150 degrees C under both isothermal and thermal cycling conditions. The scale growth mechanism was assessed using two-stage oxidation exposures with (18)O(2) as a tracer in conjunction with high-resolution secondary ion mass spectrometer analysis of isotopic distributions. The scale morphologies were further characterized using secondary electron microscopy, Pt was found to reduce slightly the scale growth rate and improve considerably its resistance to spallation but it did not affect the sequence of scale development. Instead, it slowed the rate at which the scale developed. The alpha-Al(2)O(3) scales that were eventually established were duplex in structure, consisting of a compact inner layer and a thinner outer layer. This outer layer consisted of ridges and grew by the coarsening of these and/or by a dislocation climb mechanism. |
| description.department | [smola, grzegorz; jedlinski, jerzy; nocun, m.] agh univ sci & technol, surface engn & anal lab, fac mat sci & ceram, pl-30059 krakow, poland. [wang, wen] chinese acad sci, inst met res, shenyang 110016, peoples r china. [gleeson, brian] univ pittsburgh, dept mech engn & mat sci, pittsburgh, pa 15261 usa. [kowalski, k.] agh univ sci & technol, fac met engn & ind comp sci, pl-30059 krakow, poland. [bernasik, a.] agh univ sci & technol, fac phys & appl comp sci, pl-30059 krakow, poland.;smola, g (reprint author), agh univ sci & technol, surface engn & anal lab, fac mat sci & ceram, ul reymonta 23, pl-30059 krakow, poland;jedlinsk@uci.agh.edu.pl |
| Keyword | Alumina Formers Beta-nial Oxidation Kinetics Thermal Shocks Two-stage Oxidation Secondary Ion Mass Spectrometry Secondary Electron Microscopy Thermal Barrier Coatings Alumina Scales Oxide Scales Bond Coats Behavior Stress |
| URL | 查看原文 |
| WOS ID | WOS:000269737100007 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/32284 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | G. Smola,W. Wang,J. Jedlinski,et al. Mechanistic aspects of Pt-modified beta-NiAl alloy oxidation[J]. Materials at High Temperatures,2009,26(3):273-280. |
| APA | G. Smola.,W. Wang.,J. Jedlinski.,B. Gleeson.,K. Kowalski.,...&M. Nocun.(2009).Mechanistic aspects of Pt-modified beta-NiAl alloy oxidation.Materials at High Temperatures,26(3),273-280. |
| MLA | G. Smola,et al."Mechanistic aspects of Pt-modified beta-NiAl alloy oxidation".Materials at High Temperatures 26.3(2009):273-280. |
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