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| 1 | 形状记忆合金在生物医学领域的应用显示文摘形状记忆合金作为一种智能金属材料,具有形状记忆特性、超弹性、出色的生物相容性和良好的耐腐蚀性,使得形状记忆合金被用于牙弓正畸、骨科治疗器械和重建受损血管支架等领域。形状记忆合金在生物医学领域拥有广阔的应用前景。 | 王慧 刘丽霞 康茹雪 | 2023 | 中国医疗器械信息2023，29，17： | 0 |
| 2 | Adhesion and corrosion resistance of polycaprolactone coating on NiTi alloy surface after alkali heat pretreatment显示文摘Selective laser melting of nickel-titanium alloy(SLM-NiTi)can precisely control the size of the sample molding structure and has attracted extensive attention due to its special superelasticity and shape memory effect.However,the biological inertness and poor corrosion resistance of SLM-NiTi alloy limit their wide application as biomedical implant materials.In this study,polycaprolactone(PCL)coating was prepared on SLM-NiTi alloy by dipping and pulling method,and the effects of alkali heat pretreatment on the morphology,adhesion,corrosion resistance,long-term stability and biomineralisation of the PCL coatings were investigated.The results showed that PCL coating can substan-tially improve the performance of SLM-NiTi alloy,and the PCL coating after alkali heat pretreatment has higher adhesion(increased from 1,747 to 2,498 mN)and lower corrosion current density(reduced by about an order of magnitude compared to PCL coating alone).In addition,the necessary stability,biomineralisation and biocompatibility ability of coatings were also further improved.Therefore,the alkali heat pretreated PCL-coated SLM-NiTi alloy has good application prospects in implants due to its superior properties. | Zhihui Zhang Yanan Yang Yunting Guo Pengwei Sha Zezhou Xu Zhenglei Yu Jiashun Si Zhengao Zhang Jia Guo Yifan Chen | 2022 | Biosurface and Biotribology2022，8，4： | 0 |
| 3 | Excellent shape recovery characteristics of Cu-Al-Mn-Fe shape memory single crystal显示文摘Shape memory alloys can recover the deformed shape due to their superelasticity or shape memory effect. In this study, a novel Cu-Al-Mn-Fe shape memory single crystal is reported. The results show that it has excellent superelasticity and shape memory effect simultaneously when deformed at room temperature, as well as tunably wide response temperature range with near-zero interval of reverse phase transformation. When deforming one single crystal at room temperature, it not only possesses full superelasticity of 7%, but also tunable shape memory effects up to 8.8 %. The full shape recovery during heating exhibits near-zero response interval and tunably wide response temperature range of 166 K depending on the deformation. The functional characteristics of the alloys result from the controllable reverse phase transformation hinging on the stabilization of stress-induced martensite. This class of Cu-Al-Mn-Fe alloy may be used as both superelastic materials, and shape memory materials with wide working temperature range as high-sensitive detector, driver or sensor. | Shuiyuan Yang Lipeng Guo Xinyu Qing Shen Hong Jixun Zhang Mingpei Li Cuiping Wang Xingjun Liu | 2020 | Journal of Materials Science & Technology2020，54，22： | 0 |
| 4 | 纳米晶NiTi形状记忆合金在生物医用中的应用展望显示文摘传统的NiTi合金具有超弹性、形状记忆效应及优异的生物相容性在众多领域都有广泛应用,例如:在生物医用领域被制备成口腔正畸弓丝和血管支架。但生物医用器材需要精密化及小型化,传统NiTi合金已经跟不上发展,经过严重塑性变形的纳米晶NiTi合金比传统的粗晶和超细晶NiTi合金拥有更好的拉伸、抗压强度、塑性和疲劳性能等性能。有望扩大在生物医用领域的应用范围。纳米晶NiTi合金可以用于新型医疗器械制造和骨科生物材料,与Ag组合成NiTiAg三元合金不仅力学性能优异,还附带抗菌效果;与W纳米线/带复合形成W-NiTi复合材料提高辐射不透明度,使器械和植入物在人体内的定位和部署更加简单。近年来,还有一种新型表面改性技术:超声波纳米晶表面改性,在NiTi合金表面产生纳米结晶以改善疲劳和耐腐蚀性能等。主要介绍现有的NiTi合金的应用以及纳米晶NiTi合金在生物医用领域的应用展望。 | 沈启航 李自来 唐王 史晓斌 | 2023 | 功能材料2023，54，8： | 0 |
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