Tantalum coated NiTi alloy by PIIID for biomedical application

doi:10.1016/j.surfcoat.2012.11.002

CORC > 北京大学 > 工学院

	Tantalum coated NiTi alloy by PIIID for biomedical application
	Zhou, Y. ; Li, M. ; Cheng, Y. ; Zheng, Y.F. ; Xi, T.F. ; Wei, S.C.
刊名	Surface and Coatings Technology
	2013
DOI	10.1016/j.surfcoat.2012.11.002
英文摘要	Plasma immersion ion implantation deposition (PIIID) technique was employed to fabricate tantalum coatings on NiTi alloys with the aim to obtain a more adherent, corrosion resistant and radiopaque coatings in our present study. The surface characteristics and corrosion behavior were investigated by SEM, AFM, XRD, AES, XPS and electrochemical measurement. The results show that a relatively rough, dense and adhesive tantalum coating has been successfully fabricated on NiTi alloy by the PIIID method with the thickness of about 3.3??m. The surface topography of the tantalum coatings is characterized by regularly spaced grain facets. The coating is combined with a mixture of predominantly ??-phase tantalum with a small concentration of ??-phase tantalum. The outmost surface of the coating is oxidized, consisting of majority of stoichiometric Ta2O5 and a small quantity of Ta2O5-X. It can be concluded that the dense and adhesive tantalum coatings on NiTi alloy improve its corrosion resistance, implying the decrease of Ni ions released into human body fluids. ? 2012 Elsevier B.V.; EI; SUPPL.1; S2-S6; 228
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/461279]
专题	工学院
推荐引用方式 GB/T 7714	Zhou, Y.,Li, M.,Cheng, Y.,et al. Tantalum coated NiTi alloy by PIIID for biomedical application[J]. Surface and Coatings Technology,2013.
APA	Zhou, Y.,Li, M.,Cheng, Y.,Zheng, Y.F.,Xi, T.F.,&Wei, S.C..(2013).Tantalum coated NiTi alloy by PIIID for biomedical application.Surface and Coatings Technology.
MLA	Zhou, Y.,et al."Tantalum coated NiTi alloy by PIIID for biomedical application".Surface and Coatings Technology (2013).