Detail publikace

Oxidation Performance of Cold Spray Ti-Al Barrier Coated gamma-TiAl Intermetallic Substrates

ČÍŽEK, J. MAN, O. ROUPCOVÁ, P. LOKE, K. DLOUHÝ, I.

Originální název

Oxidation Performance of Cold Spray Ti-Al Barrier Coated gamma-TiAl Intermetallic Substrates

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Four blends of Al powder containing different amounts of Ti were deposited onto Ti-46Al-7Nb substrates as oxidation-protection layers using low-pressure cold spray. The coating morphology and chemical composition were assessed. Optimized heat treatment in protective atmosphere was carried out in order to induce formation of intermetallic phases within the deposits. The specimens were then subjected to 950'C exposure for 100, 250, and 500 hrs and their oxidation performance was monitored using the gravimetric method. It was found that the oxidation rate of the coating-protected specimens was substantially reduced (an increase in the weight gain of 1.37 mg/cm2 after 500 hrs of specimen with Al coating) as compared to their uncoated counterparts (1.21 mg/cm2 after 50 hrs at 900'C). The oxidation rates increased with increasing content of Ti in the coatings. Substantial changes of the coating integrity were recorded after the long-term oxidation testing.

Klíčová slova

cold spray, oxidation protection, TiAl, intermetallics, heat treatment

Autoři

ČÍŽEK, J.; MAN, O.; ROUPCOVÁ, P.; LOKE, K.; DLOUHÝ, I.

Rok RIV

2015

Vydáno

4. 4. 2015

Nakladatel

Elsevier

ISSN

0257-8972

Periodikum

Surface and Coatings Technology

Ročník

268

Číslo

4

Stát

Švýcarská konfederace

Strany od

85

Strany do

89

Strany počet

5

URL

http://www.sciencedirect.com/science/article/pii/S0257897214011360

Plný text v Digitální knihovně

http://hdl.handle.net/11012/57337

BibTex

@article{BUT110903,
  author="Jan {Čížek} and Ondřej {Man} and Pavla {Roupcová} and Kelvin {Loke} and Ivo {Dlouhý}",
  title="Oxidation Performance of Cold Spray Ti-Al Barrier Coated gamma-TiAl Intermetallic Substrates",
  journal="Surface and Coatings Technology",
  year="2015",
  volume="268",
  number="4",
  pages="85--89",
  doi="10.1016/j.surfcoat.2014.12.004",
  issn="0257-8972",
  url="http://www.sciencedirect.com/science/article/pii/S0257897214011360"
}