Thermal barrier coatings deposited by laser CVD

Takashi Goto

doi:10.1016/j.surfcoat.2004.10.084

Thermal barrier coatings deposited by laser CVD

Takashi Goto

Materials Processing and Characterization Division

Research output: Contribution to journal › Article › peer-review

41 Citations (Scopus)

Abstract

The ceramic coating is a key issue for thermal barrier coatings (TBCs) in gas turbine technology. Atmospheric plasma spray (APS) and electron-beam physical vapor deposition (EBPVD) are commonly employed in practical applications. An alternative route, chemical vapor deposition (CVD), is a candidate process for TBCs. Although CVD has been understood to be too slow to obtain thick coatings, a laser CVD process has achieved an extremely high deposition rate (660 μm/h) for yttria-stabilized zirconia (YSZ) coatings. The high deposition rates have caused a large number of nano-pores in grains leading to a significantly smaller thermal conductivity of 0.7 W/mK. This paper briefly reviews the process for TBCs, and introduces laser CVD for thick oxide coatings.

Original language	English
Pages (from-to)	367-371
Number of pages	5
Journal	Surface and Coatings Technology
Volume	198
Issue number	1-3 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.surfcoat.2004.10.084
Publication status	Published - 2005 Aug 1

Keywords

Laser
Photolaser CVD
Thermal barrier
Yttrium oxide
Zirconium oxide

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

Access to Document

10.1016/j.surfcoat.2004.10.084

Cite this

@article{cc361d73e02c4543906156eed9d926fb,

title = "Thermal barrier coatings deposited by laser CVD",

abstract = "The ceramic coating is a key issue for thermal barrier coatings (TBCs) in gas turbine technology. Atmospheric plasma spray (APS) and electron-beam physical vapor deposition (EBPVD) are commonly employed in practical applications. An alternative route, chemical vapor deposition (CVD), is a candidate process for TBCs. Although CVD has been understood to be too slow to obtain thick coatings, a laser CVD process has achieved an extremely high deposition rate (660 μm/h) for yttria-stabilized zirconia (YSZ) coatings. The high deposition rates have caused a large number of nano-pores in grains leading to a significantly smaller thermal conductivity of 0.7 W/mK. This paper briefly reviews the process for TBCs, and introduces laser CVD for thick oxide coatings.",

keywords = "Laser, Photolaser CVD, Thermal barrier, Yttrium oxide, Zirconium oxide",

author = "Takashi Goto",

note = "Funding Information: This work was performed as a part of Nano-Coating Project sponsored by New Energy and Industrial Technology Development Organization (NEDO), Japan. ",

year = "2005",

month = aug,

day = "1",

doi = "10.1016/j.surfcoat.2004.10.084",

language = "English",

volume = "198",

pages = "367--371",

journal = "Surface and Coatings Technology",

issn = "0257-8972",

publisher = "Elsevier",

number = "1-3 SPEC. ISS.",

}

TY - JOUR

T1 - Thermal barrier coatings deposited by laser CVD

AU - Goto, Takashi

N1 - Funding Information: This work was performed as a part of Nano-Coating Project sponsored by New Energy and Industrial Technology Development Organization (NEDO), Japan.

PY - 2005/8/1

Y1 - 2005/8/1

N2 - The ceramic coating is a key issue for thermal barrier coatings (TBCs) in gas turbine technology. Atmospheric plasma spray (APS) and electron-beam physical vapor deposition (EBPVD) are commonly employed in practical applications. An alternative route, chemical vapor deposition (CVD), is a candidate process for TBCs. Although CVD has been understood to be too slow to obtain thick coatings, a laser CVD process has achieved an extremely high deposition rate (660 μm/h) for yttria-stabilized zirconia (YSZ) coatings. The high deposition rates have caused a large number of nano-pores in grains leading to a significantly smaller thermal conductivity of 0.7 W/mK. This paper briefly reviews the process for TBCs, and introduces laser CVD for thick oxide coatings.

AB - The ceramic coating is a key issue for thermal barrier coatings (TBCs) in gas turbine technology. Atmospheric plasma spray (APS) and electron-beam physical vapor deposition (EBPVD) are commonly employed in practical applications. An alternative route, chemical vapor deposition (CVD), is a candidate process for TBCs. Although CVD has been understood to be too slow to obtain thick coatings, a laser CVD process has achieved an extremely high deposition rate (660 μm/h) for yttria-stabilized zirconia (YSZ) coatings. The high deposition rates have caused a large number of nano-pores in grains leading to a significantly smaller thermal conductivity of 0.7 W/mK. This paper briefly reviews the process for TBCs, and introduces laser CVD for thick oxide coatings.

KW - Laser

KW - Photolaser CVD

KW - Thermal barrier

KW - Yttrium oxide

KW - Zirconium oxide

UR - http://www.scopus.com/inward/record.url?scp=20844457202&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=20844457202&partnerID=8YFLogxK

U2 - 10.1016/j.surfcoat.2004.10.084

DO - 10.1016/j.surfcoat.2004.10.084

M3 - Article

AN - SCOPUS:20844457202

SN - 0257-8972

VL - 198

SP - 367

EP - 371

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

IS - 1-3 SPEC. ISS.

ER -

Thermal barrier coatings deposited by laser CVD

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this