TY - JOUR
T1 - Thermal barrier coatings deposited by laser CVD
AU - Goto, Takashi
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
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U2 - 10.1016/j.surfcoat.2004.10.084
DO - 10.1016/j.surfcoat.2004.10.084
M3 - Article
AN - SCOPUS:20844457202
VL - 198
SP - 367
EP - 371
JO - Surface and Coatings Technology
JF - Surface and Coatings Technology
SN - 0257-8972
IS - 1-3 SPEC. ISS.
ER -