𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Effect of atmosphere composition on the oxidation behavior of MCrAlY coatings

✍ Scribed by P. Song; M. Subanovic; J. Toscano; D. Naumenko; W. J. Quadakkers

Publisher
John Wiley and Sons
Year
2010
Tongue
German
Weight
558 KB
Volume
62
Category
Article
ISSN
0947-5117

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

In the present work the effect of atmosphere composition on the growth rate and adherence of the alumina scales was studied using free‐standing MCrAlY‐coatings and TBC‐specimens with MCrAlY‐bondcoats. The exposures comprised isothermal and cyclic exposures in laboratory air and Ar‐H~2~‐H~2~O at 1100 °C.

It is shown that minor Zr‐addition to the bondcoat results in enhanced scale growth and internal oxidation. This effect is independent of the atmosphere composition. As a consequence of the rapid oxide formation the times to TBC failure on the Zr‐containing bondcoat in both atmospheres were much shorter compared to those with Zr‐free bondcoat. In the latter case the formation of a thin compact alumina TGO was slower in H~2~/H~2~O than in air resulting in significantly longer TBC‐lifetime in the former atmosphere.

📜 SIMILAR VOLUMES

Effect of manufacturing related paramete
Effect of manufacturing related parameters on oxidation properties of MCrAlY-bondcoats
✍ M. Subanovic; D. Sebold; R. Vassen; E. Wessel; D. Naumenko; L. Singheiser; W. J. 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 German ⚖ 569 KB

## Abstract The effect of MCrAlY‐bondcoat manufacturing parameters prior to TBC deposition on the bondcoat oxidation behavior and TBC lifetime was studied. The studied material was a NiCoCrAl(Y/Hf) free‐standing coating. It was found that variation of oxygen partial pressure during vacuum plasma sp

Effect of polymer coating on the thermal
Effect of polymer coating on the thermal decomposition of composite propellant oxidizers
✍ K.C. Patil; M. Ramanath; V.R.Pai Verneker 📂 Article 📅 1981 🏛 Elsevier Science 🌐 English ⚖ 570 KB

Ammonium perchlorate (AP) has been coated with polystyrene (PS), cellulose acetate (CA), Novolak resin and polymethylmethacrylate (PMMA) by a solvent/nonsolvent method which makes use of the coacervation principle. The effect of polymer coating on AP decomposition has been studied using thermogravim

Effect of low-temperature oxidation on t
Effect of low-temperature oxidation on the composition of Athabasca bitumen
✍ Dasari Ram Babu; Donald E. Cormack 📂 Article 📅 1984 🏛 Elsevier Science 🌐 English ⚖ 402 KB

The effect of low temperature oxidation on the composition of Athabasca bitumen was examined. Oxidation temperatures in the range 125-l 35°C and extents of oxidation up to 100 mg 02/g bitumen were investigated. The aromatics concentration was observed to decline steadily and the concentration of asp

Effect of the application of cow slurry
Effect of the application of cow slurry to grassland on the composition of the soil atmosphere
✍ J. R. Burford 📂 Article 📅 1976 🏛 John Wiley and Sons 🌐 English ⚖ 793 KB

## Abstract The effect of a heavy application (550 tonnes/ha) of unamended cow slurry to grassland in early spring (March) on the composition of the soil atmosphere was examined by analysing the gaseous phase under adjacent treated and untreated areas for a 12‐month period. Restricted aeration and

Effect of fibres coating on fracture pro
Effect of fibres coating on fracture properties of composite
✍ V.K. Srivastava 📂 Article 📅 1989 🏛 Elsevier Science 🌐 English ⚖ 756 KB

In the present paper, the ultimate tensile strength, fracture toughness and surface fracture energy of continuously coated, uncoated fly-ash filled unidirectional glass fibre reinforced epoxy resin have been studied. The results show that the tensile strength and fracture toughness of fly-ash filled

The effect of different modified multiwa
The effect of different modified multiwalled carbon nanotubes on tribological behaviors of poly(furfuryl alcohol) composite coatings
✍ Xue Hu Men; Zhao Zhu Zhang; Jin Yang; Kun Wang; Wei Jiang 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 930 KB

## Abstract Three kinds of modified multiwalled carbon nanotubes (MWNTs) with different length were obtained by grafting carboxylic groups on long MWNTs or copolymer groups on short and long MWNTs. The modified MWNTs were examined by infrared spectroscopy, thermal gravimetric analysis, X‐ray photoe