Detail publikace

Damage of Diffusion Coatings on Turbine Blades

KIANICOVÁ, M. SLÁMEČKA, K. POKLUDA, J.

Originální název

Damage of Diffusion Coatings on Turbine Blades

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

Nickel- and cobalt-based superalloys have been developed and are used in the hot sections of gas turbines in order to meet complex high-temperature phenomena. The gas temperature in modern engines exceeds 1650 C in the turbine section and its cooled parts reach temperatures as high as 1200 C. During operation, the structural materials degrade by fatigue, creep, oxidation, corrosion and erosive wear. Protective coatings provide barriers between the alloys and outer environment and, in particular, they enhance a resistance to oxidation and hot corrosion. The metallic coatings can be divided into two categories: diffusion and overlay coatings. Diffusion aluminide coatings (DAC) are based on the intermetallic compound beta-NiAl that forms under the influence of the substrate. Although DAC have been enjoying wide application, they have a limitation which arises from no deliberate changes of their properties to meet requirements of specific service conditions. This article is focused on a detection of damage that formed in the diffusion coatings on first stage turbine blades after two different short-term overheating events. Motivation for this study came from demands for an extension of our knowledge of degradation mechanisms. A possibility of a non-destructive assessment of the damage level using suitable damage parameters is also briefly described

Klíčová slova

Diffusion aluminide coating, overheating, degradation parameter, creep, aircraft engine

Autoři

KIANICOVÁ, M.; SLÁMEČKA, K.; POKLUDA, J.

Rok RIV

2011

Vydáno

18. 5. 2011

Nakladatel

Tanger sro

Místo

Ostrava

ISBN

978-80-87294-24-6

Kniha

METAL 2011 Conference Proceedings

Edice

Metal

Číslo edice

1

Strany od

840

Strany do

846

Strany počet

7

BibTex

@inproceedings{BUT89317,
  author="Marta {Kianicová} and Karel {Slámečka} and Jaroslav {Pokluda}",
  title="Damage of Diffusion Coatings on Turbine Blades",
  booktitle="METAL 2011 Conference Proceedings",
  year="2011",
  series="Metal",
  number="1",
  pages="840--846",
  publisher="Tanger sro",
  address="Ostrava",
  isbn="978-80-87294-24-6"
}