Nakamura Takashi, Nishida Hisataka, Sekino Tohru, Nawa Masahiro, Wakabayashi Kazumichi, Kinuta Soichiro, Mutobe Yoshihiko, Yatani Hirofumi
Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan.
Dent Mater J. 2007 Sep;26(5):623-7. doi: 10.4012/dmj.26.623.
The aim of this study was to evaluate the electrophoretic deposition (EPD) behavior of ceria-stabilized zirconia/alumina (Ce-TZP/Al2O3) granulated powder. Two types of slurry with powder-to-solvent ratios of 10 wt% and 20 wt% were used. Zeta potential of the slurries was measured using a spectrometer at different pH levels. Then, EPD was performed to measure the weight of the deposited particles at varying pH levels and at two voltages (50 V and 100 V). The isoelectric point of Ce-TZP/Al2O3 mixed powder was approximately at pH 8.5. When EPD was performed, deposition of ceramic particles was typically observed in the range of pH 3 to pH 7, with the greatest deposition found at around pH 7. Moreover, the deposition of ceramic particles increased with increase in slurry concentration and voltage.
本研究的目的是评估二氧化铈稳定的氧化锆/氧化铝（Ce-TZP/Al₂O₃）造粒粉末的电泳沉积（EPD）行为。使用了两种粉末与溶剂比例分别为10 wt%和20 wt%的浆料。使用光谱仪在不同pH水平下测量浆料的zeta电位。然后，进行电泳沉积以测量在不同pH水平和两种电压（50 V和100 V）下沉积颗粒的重量。Ce-TZP/Al₂O₃混合粉末的等电点约为pH 8.5。进行电泳沉积时，通常在pH 3至pH 7范围内观察到陶瓷颗粒的沉积，在pH 7左右发现最大沉积量。此外，陶瓷颗粒的沉积量随着浆料浓度和电压的增加而增加。
