文章信息/Info

Title:

Research Progress of Properties and Surface Modification of Medical NiTi Alloy

文章編號:

1674-3962(2024)06-0525-08

作者:

倪家偉; 曹自洋; 許威; 潘杰

1．蘇州科技大學機械工程學院，江蘇 蘇州 215009 2．蘇州科技大學 蘇州市高效與精密加工技術重點實驗室，江蘇 蘇州 215009

Author(s):

NI Jiawei;  CAO Ziyang;  XU Wei;  PAN Jie

1. School of Mechanical Engineering, Suzhou University of Science and Technology，Suzhou 215009,China 2. Suzhou Key Laboratory of Precision and Efficient Machining Technology，Suzhou University of Science and Technology，Suzhou 215009,China

關鍵詞:

鎳鈦合金; 表面改性; 耐蝕性; 生物相容性; 復合改性

Keywords:

NiTi alloy;  surface modification;  corrosion resistance;  biocompatibility; composite modification

分類號:

TG178;TG146

DOI:

10.7502/j.issn.1674-3962.202206008

文獻標志碼:

A

摘要:

鎳鈦合金基于特有的超彈性、形狀記憶性以及良好的物理機械性與生物相容性，廣泛應用于介入醫療領域。同時，由于人體生理環境復雜，鎳鈦合金不可避免地存在鎳離子釋放和細菌黏附等問題，通過表面改性技術提升鎳鈦合金耐蝕性及生物相容性成為了鎳鈦合金的研究熱點。簡要介紹了鎳鈦合金的性能特征以及電火花表面改性、激光誘導、陽極氧化、自組裝合成及化學改性等表面處理方法的最新研究進展。總結出微納結構、元素類型等對鎳鈦合金表面潤濕性、耐蝕性以及生物相容性的影響規律。指出采用多種表面改性技術復合的方法提升植入體性能是未來鎳鈦合金表面改性的主要方向。

Abstract:

NiTi alloys are widely used in the field of interventional medicine because of their unique hyperelasticity, shape memory, good physical and mechanical properties, biocompatibility. At the same time, due to the complex human physiological environment, NiTi alloy inevitably have problems such as Ni ion release and bacterial adhesion. Improving the corrosion resistance and biocompatibility of NiTi alloy through surface modification technology has become a research hotspot. This paper briefly introduces the properties of NiTi alloy and the latest progress of surface treatment methods such as electric discharge machining surface modification, laser induction, anodic oxidation,self-assembly synthesis and chemical surface modification. The effects of micro/nano structure and element types on the wettability, corrosion resistance and biocompatibility of NiTi alloy are summarized. It is pointed out that the main direction of surface modification of NiTi alloy in the future is to adopt multiple surface modification technologies to improve the implant performance.