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学科主题: 口腔医学
题名:
In vitro corrosion and cytotoxicity on microcrystalline, nanocrystalline and amorphous NiTi alloy fabricated by high pressure torsion
作者: Nie, F. L.1,2; Zheng, Y. F.1,2,3; Cheng, Y.3; Wei, S. C.3,4; Valiev, R. Z.5
关键词: Ni50.2Ti49.8 alloy ; Nanocrystalline ; Amorphous ; Metals and alloys ; Corrosion and ion release ; Cytotoxicity
刊名: MATERIALS LETTERS
发表日期: 2010-04-30
DOI: 10.1016/j.matlet.2010.01.081
卷: 64, 期:8, 页:983-986
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Materials Science, Multidisciplinary ; Physics, Applied
研究领域[WOS]: Materials Science ; Physics
关键词[WOS]: BIOCOMPATIBILITY
英文摘要:

Bulk nanocrystalline and amorphous Ni50.2Ti49.8 alloy samples were successfully prepared from commercial microcrystalline Ni50.2Ti49.8 alloy discs by high pressure torsion (HPT) technique. Then their corrosion resistance, surface wettability and cytotoxicity were further studied from the viewpoint of biomaterials. In both Hank′s solution and artificial saliva, bulk nanocrystalline and amorphous Ni50.2Ti49.8 alloys showed significantly higher pitting corrosion potentials than that of microcrystalline Ni50.2Ti49.8 alloy. Meanwhile, the amount of Ni ion release after immersion in Hank′s solution was minor, far below the threatening threshold of daily diet. Murine fibroblast and osteoblast cell lines were indirectly co-cultured with experimental sample extracts, indicating no cytotoxicity. Amongst all samples, the nanocrystalline Ni50.2Ti49.8 shows promising as best biomaterial candidate for its good combination of mechanical property, corrosion resistance and cytocompatibility. (C) 2010 Elsevier B.V. All rights reserved.

语种: 英语
所属项目编号: 30770580 ; 2007CB936103
项目资助者: National Natural Science Foundation of China ; National Key Scientific Program-Nanoscience and Nanotechnology
WOS记录号: WOS:000276138400028
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/60786
Appears in Collections:北京大学口腔医学院_期刊论文

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作者单位: 1.Peking Univ, Coll Engn, Dept Adv Mat & Nanotechnol, Beijing 100871, Peoples R China
2.Peking Univ, Coll Engn, State Key Lab Turbulence & Complex Syst, Beijing 100871, Peoples R China
3.Peking Univ, Ctr Biomed Mat & Tissue Engn, Acad Adv Interdisciplinary Studies, Beijing 100871, Peoples R China
4.Peking Univ, Sch Stomatol, Dept Oral & Maxillofacial Surg, Beijing 100081, Peoples R China
5.Ufa State Aviat Tech Univ, Inst Phys Adv Mat, Ufa, Russia

Recommended Citation:
Nie, F. L.,Zheng, Y. F.,Cheng, Y.,et al. In vitro corrosion and cytotoxicity on microcrystalline, nanocrystalline and amorphous NiTi alloy fabricated by high pressure torsion[J]. MATERIALS LETTERS,2010,64(8):983-986.
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