Stability and protein-absorb ability of the chemical structure of titanium surface mirror-polished with various abrasives

各种磨料镜面抛光钛表面化学结构的稳定性和蛋白质吸收能力

• 批准号: 12671876
• 负责人: MIYAKAWA Osamu
• 金额: $ 1.73万
• 依托单位: Niigata University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12671876/
• 关键词: Titanium; Polished surface; Contamination; Oxide film; Abrasive; Chromic oxide; XPS; EPMA; 電子線マイクロアナライザー; コロイダルシリカ

The chemical structure of titanium surface polished with SiC, Al_2O_3, Fe_20_3, Si0_2 and Cr_2O_3 was investigated by means of surface analysis methods. Si, Al, Fe, and Cr contaminated the surface with non-uniform distributions. The higher polishing pressure, the more remarkably the surface was contaminated, which failed to create a smooth and chemically clean surface. Finer abrasive grain and lower pressure is essential for a mirror-like surface. The surface contamination resulted from destruction of the passive oxide film through cutting action of abrasives, and resultantly from their reactions with inherently active titanium. Actually, Fe was suggested to exist as Fe^<2+> at the outermost surface. Al and Cr might exist as trivalent hydroxide. Moreover, the surface polished under higher pressure was tinged with a pale brown or gold-like color, as if it was anode oxidized. The surface analyzes proved that this was a result of notable increase in the oxide film thickness. It is doubtfu … More l, however, whether the increased thickness raises favorably the corrosion resistance of titanium, since the film had abrasive constituent elements and its thickness was non-uniform. Polishing with colloidal silica, regardless of polishing pressure, provided a chemically clean mirror-like surface. Si was hardly detected in the oxide film and its thickness did not change. Together with mechanical action of silica, some colloid stabilizing agents might dissolve the oxide film and reaction products between titanium and silica. When immersed in an electrolyte solution, the polished surface under higher pressure showed the existence of higher amounts of Ca and P, compared with lower pressure, which corresponded to the increased thickness of the oxide film. The protein-absorbed layer was suggested to be thicker in the colloidal silica-polished surface. For the understanding of in vivo behaviors of titanium, including the protein-absorbability, it is necessary to investigate more precisely the chemical structure of surface modified by various methods. Less

用表面分析方法研究了SiC、Al_2O_3、Fe_2O_3、SiO_2和Cr_2O_3抛光钛表面的化学结构。Si、Al、Fe和Cr以非均匀分布污染表面。抛光压力越高，表面污染越明显，这不能产生光滑和化学清洁的表面。更细的磨粒和更低的压力对于镜面表面至关重要。表面污染是由于磨料的切割作用破坏了钝化氧化膜，以及磨料与固有活性钛的反应造成的。实际上，Fe被认为以Fe^<2+>的形式存在于最外层表面。Al和Cr可能以三价氢氧化物的形式存在。此外，在较高压力下抛光的表面带有淡棕色或类似金色的颜色，好像它被阳极氧化。表面分析证明，这是氧化膜厚度显著增加的结果。值得怀疑 ...更多信息 然而，增加的厚度是否有利地提高了钛的耐腐蚀性，这是因为膜具有磨蚀性组成元素并且其厚度不均匀。无论抛光压力如何，用胶体二氧化硅抛光都提供了化学清洁的镜面表面。在氧化膜中几乎检测不到Si，并且其厚度没有变化。一些胶体稳定剂在二氧化硅的机械作用下，可溶解钛与二氧化硅之间的氧化膜和反应产物。当浸入电解质溶液中时，在较高压力下的抛光表面显示出较高量的Ca和P的存在，与较低的压力相比，这对应于氧化膜的厚度增加。蛋白质吸附层被认为是较厚的胶体二氧化硅抛光表面。为了更好地了解钛在体内的行为，包括蛋白质的吸收，有必要更精确地研究各种方法修饰的表面的化学结构。少

项目成果

Hossain MA: "Surface Composition and Structure of Titanium Polished with Silica Sol and Chromic Oxide"Journal of the Japanese Society for Dental Materials and Devices. 21-Special 39 (in press). (2002)

Hossain MA：“用硅溶胶和氧化铬抛光的钛的表面成分和结构”日本牙科材料与设备学会杂志。

Mohammed Awlad Hossain: "Surface Composition and Structure of Titanium Polished with Silica Sol and Chromic Oxide"日本歯科理工学会第39回春期学術講演会講演集(歯科材料・器械). Vol.21・Special39(印刷中). (2002)

Mohammed Awlad Hossain：“用硅溶胶和氧化铬抛光的钛的表面成分和结构”第39届日本牙科科学技术学会春季学术会议论文集（牙科材料和仪器）（牙科材料和仪器）第21卷。出版社）。2002）。

Mohammed Awlad Hossain: "Surface Composition and Structure of Titanium Polished with Silica Sol and Chromic Oxide"日本歯科理工学会第39回春季学術講演会講演集(歯科材料・器械). Vol 21・Special 39(印刷中). (2002)

Mohammed Awlad Hossain：“用硅溶胶和氧化铬抛光的钛的表面组成和结构”第39届日本牙科科学技术学会春季学术会议论文集（牙科材料和仪器）第21卷·特刊39（出版中）。 ）。2002）。