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標題: Nano-crystallization and surface analysis of electrolytic ZrO2 coatings on Co-Cr alloy
作者: Yen, S.K.
Hsu, H.C.
關鍵字: metal implant applications
ceramic thin-films
zirconia films
期刊/報告no:: Journal of Materials Science-Materials in Medicine, Volume 12, Issue 6, Page(s) 497-501.
摘要: Zirconia coatings were formed on Co-Cr substrates by electrolytic deposition. The microstructure of electrolytic zirconia-coated films on Co-Cr substrates was examined. According to the results of ESCA, the bonding energies of ZrO2 coating surface layer which changed with the annealing temperature from 400 degreesC, 500 degreesC to 600 degreesC are attributed to amorphous (a), tetragonal (t) and monoclinic (m) structure, respectively. The X-ray diffraction (XRD) of the coatings on the Co-Cr substrates annealed at 400, 500 and 600 degreesC revealed the major crystallization from m through t and then to m+t. However, TEM observations clearly showed that the interface layer of the coatings were nanosize crystallites, first the formation of tetragonal and monoclinic ZrO2 structures. These different phase transformations are mainly due to the different surface energy of ZrO2 coating in air, in bulk or on Co-Cr alloy. (C) 2001 Kluwer Academic Publishers.
ISSN: 0957-4530
Appears in Collections:材料科學與工程學系



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