TY - JOUR
T1 - Formation of porous anodic films on Ti-Si alloys in hot phosphate-glycerol electrolyte
AU - Habazaki, H.
AU - Oikawa, Y.
AU - Fushimi, K.
AU - Shimizu, K.
AU - Nagata, S.
AU - Skeldon, P.
AU - Thompson, G. E.
N1 - Funding Information:
The present work was supported in part by a Grant-in-Aid for Scientific Research, No. 16360353 from the Japan Society for the Promotion of Science. A part of this work was carried out under the Visiting Researcher's Programme of the Advanced Research Center of Metallic Glasses, Institute for Materials Research, Tohoku University.
PY - 2007/12/31
Y1 - 2007/12/31
N2 - Porous anodic films, with pore size of ∼10 nm, have been developed by anodizing of magnetron sputtered Ti-25 at.% Si alloy at constant formation voltages in glycerol electrolyte containing dibasic potassium phosphate at 433 K. The films, of amorphous structure, contain titanium and silicon species, as units of TiO2 and SiO2, throughout the film thicknesses, with negligible amounts of phosphorus species. The silicon is enriched in the film relative to the composition of the alloy, the level of enrichment suggesting that anion migration is increased in comparison with amorphous film growth at ambient temperature. In contrast to the behaviour of the alloy, essentially barrier films were formed on commercially pure titanium in the glycerol electrolyte, when a main anodic reaction was generation of oxygen, which was probably promoted by the development of anatase.
AB - Porous anodic films, with pore size of ∼10 nm, have been developed by anodizing of magnetron sputtered Ti-25 at.% Si alloy at constant formation voltages in glycerol electrolyte containing dibasic potassium phosphate at 433 K. The films, of amorphous structure, contain titanium and silicon species, as units of TiO2 and SiO2, throughout the film thicknesses, with negligible amounts of phosphorus species. The silicon is enriched in the film relative to the composition of the alloy, the level of enrichment suggesting that anion migration is increased in comparison with amorphous film growth at ambient temperature. In contrast to the behaviour of the alloy, essentially barrier films were formed on commercially pure titanium in the glycerol electrolyte, when a main anodic reaction was generation of oxygen, which was probably promoted by the development of anatase.
KW - Anodic oxide films
KW - Crystallisation
KW - Glycerol electrolyte
KW - Self-organized porous oxide
KW - Ti-Si alloy
UR - http://www.scopus.com/inward/record.url?scp=35549002174&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=35549002174&partnerID=8YFLogxK
U2 - 10.1016/j.electacta.2007.08.033
DO - 10.1016/j.electacta.2007.08.033
M3 - Article
AN - SCOPUS:35549002174
VL - 53
SP - 1775
EP - 1781
JO - Electrochimica Acta
JF - Electrochimica Acta
SN - 0013-4686
IS - 4
ER -