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学科主题: 口腔医学
题名:
Surface nanostructures orienting self-protection of an orthodontic nickel-titanium shape memory alloys wire
作者: Nie Qiong; Ji ZhuoYu; Lin JiuXiang; Hu WenPing
关键词: nanostructures ; self-protection ; orthodontics ; nickel-titanium shape memory alloys wire
刊名: CHINESE SCIENCE BULLETIN
发表日期: 2007-11-01
DOI: 10.1007/s11434-007-0460-1
卷: 52, 期:21, 页:3020-3023
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
关键词[WOS]: CARBON NANOTUBES ; OXYGEN PLASMA ; WATER ; WETTABILITY
英文摘要:

Shape memory alloys (SMA) have been applied to a wide variety of applications in a number of different fields such as aeronautical applications, sensors/actuators, medical sciences as well as orthodontics. It is a hot topic to enhance the anti-corrosion ability of orthodontic wires for clinical applications. In this letter, a very nice fractal structure, micro-domains with identical nanometer sized grooves, was obtained on the surfaces of the orthodontic wires with an oxygen plasma and acid corrosion. The concave parts of the grooves were dominated by titanium and convex parts were the same as the bulk wires. The micro-nano fractal structure generated a hydrophobic surface with the largest contact angle to water being about 157 degrees. The titanium dominated nanolayer and the hydrophobicity of the surface resulted in jointly the great improvement of the anti-corrosion ability of the orthodontic wires. Because the fractal structures of the wires were formed automatically when they immersed in acidic environment, hence, the self-protection of the oxygen plasma-treated orthodontic wires in acidic environment indicates their potential applications in orthodontics, and should be also inspirable for other applications of SMA materials.

语种: 英语
WOS记录号: WOS:000250463400021
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/60660
Appears in Collections:北京大学口腔医学院_牙周科_期刊论文

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作者单位: 1.Peking Univ, Sch & Hosp Stomatol, Dept Orthodont, Beijing 100081, Peoples R China
2.Chinese Acad Sci, Inst Chem, Natl Lab Mol Sci, Key Lab Organ Solids, Beijing 100080, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China

Recommended Citation:
Nie Qiong,Ji ZhuoYu,Lin JiuXiang,et al. Surface nanostructures orienting self-protection of an orthodontic nickel-titanium shape memory alloys wire[J]. CHINESE SCIENCE BULLETIN,2007,52(21):3020-3023.
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