TY - JOUR
T1 - Microstructure modification of yttria-stabilized zirconia layers prepared by EB-PVD
AU - Yamaguchi, Norio
AU - Wada, Kunihiko
AU - Kimura, Kazushige
AU - Matsubara, Hideaki
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2003/12
Y1 - 2003/12
N2 - Microstructures and texture of yttria-stabilized zirconia (YSZ) layers prepared by electron beam physical vapor deposition (EB-PVD) were investigated, addressing the effect of processing parameters. All the YSZ layers investigated in this study showed a columnar structure. However, significant differences were found in their microstructures. Morphology, porosity, and texture of the layers changed drastically by substrate manipulation during deposition. Without rotation, the layer showed a dense columnar structure with less intercolumnar gaps and obscure feather-like structures, and no preferred growth orientation. Rotation was very effective in developing feather-like structures within each column and hence increasing porosity. In addition, substrate rotation caused strong (100) texture. These results are attributed to the flux shadowing effect induced by oblique vapor incidence caused by substrate manipulation. The influence of electron beam power and substrate temperature was also investigated.
AB - Microstructures and texture of yttria-stabilized zirconia (YSZ) layers prepared by electron beam physical vapor deposition (EB-PVD) were investigated, addressing the effect of processing parameters. All the YSZ layers investigated in this study showed a columnar structure. However, significant differences were found in their microstructures. Morphology, porosity, and texture of the layers changed drastically by substrate manipulation during deposition. Without rotation, the layer showed a dense columnar structure with less intercolumnar gaps and obscure feather-like structures, and no preferred growth orientation. Rotation was very effective in developing feather-like structures within each column and hence increasing porosity. In addition, substrate rotation caused strong (100) texture. These results are attributed to the flux shadowing effect induced by oblique vapor incidence caused by substrate manipulation. The influence of electron beam power and substrate temperature was also investigated.
KW - Columnar structure
KW - EB-PVD
KW - Thermal barrier coating
KW - Zirconia
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U2 - 10.2109/jcersj.111.883
DO - 10.2109/jcersj.111.883
M3 - Article
AN - SCOPUS:0346009257
VL - 111
SP - 883
EP - 889
JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
SN - 1882-0743
IS - 1300
ER -