سال انتشار: ۱۳۹۱

محل انتشار: اولین همایش بین المللی و ششمین همایش مشترک انجمن مهندسی متالورژی ایران

تعداد صفحات: ۶

نویسنده(ها):

Nader Parvin – Department of Mining and Metallurgical Engineering, Amirkabir University of Technology, Hafez Ave, Tehran, Iran
MOHAMMAD H. ELAHINIA – Associate Professor, Mechanical Engineering Department, The University of Toledo, Toledo, USA
Mohammad Naeimi – B.Sc. Student, Mining & Materials Engineering Department, AmirKabir University of Technology, Iran
MAHDI HASHEMI – PhD Student, Mining & Materials Engineering Department, AmirKabir University of Technology, Iran

چکیده:

NiTi foams are unique among biocompatible porous metals because of their shape-memory or superelastic behavior, and low stiffness facilitating integration with bone structures. This article briefly reviews recent researches on Nitinol for bone replacement, with the emphasis on surface modifications designed to create bio-inert porous NiTi surfaces with low Ni release and corrosion, as well as bioactive surfaces to enhance and accelerate biological activity. In this work, hydroxyapatite and also hydroxyapatite/zirconia composite coatings on Nitinol alloy surface are investigated. It was concluded that the addition of ZrO2 could improve wear resistance of coating and subsequently the implant and also increases the bonding strength between the composite coating and the substrate