溶融塩パルス電流法によって電析させたチタン薄膜の特性

抄録

Titanium films were electrodeposited on 304 stainless steel by a pulse current method in an eutectic KCl-NaCl-LiCl mixture containing 2 mol%K₂TiF₆. The influence of electrodeposition conditions on the crystal orientation and morphology of the films was investigated by X-ray diffraction and scanning electron microscopy, respectively. With increasing temperature, Ti films electrodeposited by a pulse current show (110) preferred orientation. The morphology of Ti films showed well-crystallized grains, which became larger with increasing temperature. It was also found that the orientation and morphology of the Ti films changed with current density, time and pulse period. Corrosion resistance was estimated by anodic polarization method in 3%NaCl solution at 298 K. It was found that the films obtained above 873 K had a good corrosion resistance.