レーザーCVD法によるイットリア安定化ジルコニア膜及びチタニア膜の高速合成(第59回日本セラミックス協会進歩賞受賞に関する総説及び論文)

概要

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Yttria-stabilized zirconia (YSZ, Zr_<1-x>Y_xO_<2-x/2>) and titania (TiO_2) films were prepared by laser chemical vapor deposition (LCVD). The deposition rate increased drastically by laser irradiation, and reached to 660μm/h for YSZ and 2300μm/h for TiO_2 films. The increase of the deposition rate was resulted from plasma formation around the deposition zone, and the plasma was formed at high laser power and high substrate pre-heating temperature. Various morphologies of films such as feather-like columnar structure and dense microstructure were obtained depending on deposition conditions. The columnar structure contained a large amount of nano-pores at columnar boundary and in grains.
2006-02-01