Evaluation of corrosion and tarnish on titanium alloy by electrochemical quartz crystal analyzer

电化学石英晶体分析仪评价钛合金的腐蚀和变色

• 批准号: 16390564
• 负责人: ODA Yutaka
• 金额: $ 6.27万
• 依托单位: Tokyo Dental Collage
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16390564/
• 关键词: corrosion; titanium; tarnish; protein; electrochemistry; albumin; titanium alloy

Although well known for their superior corrosion resistance, titanium and titanium alloys are not strongly resistant to discoloration caused by peroxide and fluoride. This study investigates the tarnish and dissolution of several titanium alloys caused by peroxide or fluoride containing solutions. We found following conclusions. The reactions on titanium in a solution containing fluoride and albumin are demonstrated based on crystal phase, surface composition, released titanium concentration, and pH. The formation of an adsorbed albumin films on the passive film of specimen not only protected the specimen from attack by the fluoride but also suppressed release of titanium. The corrosion resistance of PGA and S12 decreased in iodine, and that of TI decreased in fluoride. Chromium content in Ti-Cr alloys increases the ratio of chromium oxide in surface oxide films. We suggest that oxide films which have rich chromium oxide content have greater corrosion resistance to fluoride. Alloying up to 3.5 mass % Cu to Ti-6Al-4V did not change the corrosion behavior. Specimens with ground or sandblasted surfaces were superior to specimens with as-cast surfaces. The color difference and dissolution rates were different with the two solutions. In the hydrogen peroxide containing solution, the color difference was higher for the Ti-55Ni and the Ti-6Al-4V alloys than any other alloys. Ti,Ti-0.15Pd,Ti-7Nb-6Al,Ti-6Al-4V and Ti-10Cu alloys showed remarkable color differences and dissolution in the fluoride containing solution. Ti-20Cr alloy showed the least color difference and dissolution in both solutions. We could not find significant correlation between color difference and dissolution by electrochemical quartz crystal analyzer.

尽管钛和钛合金以其优异的耐腐蚀性而闻名，但它们对过氧化物和氟化物引起的变色的抵抗力并不强。本研究调查了由过氧化物或含氟化物溶液引起的几种钛合金的变色和溶解。我们发现以下结论。基于晶相、表面组成、释放的钛浓度和 pH 值，证明了钛在含有氟化物和白蛋白的溶液中的反应。在标本的钝化膜上形成吸附的白蛋白膜不仅可以保护标本免受氟化物的侵蚀，而且可以抑制钛的释放。 PGA和S12的耐蚀性在碘中降低，TI在氟化物中耐蚀性降低。 Ti-Cr合金中的铬含量增加了表面氧化膜中氧化铬的比例。我们认为氧化铬含量丰富的氧化膜对氟化物具有更好的耐腐蚀性。将高达 3.5 质量％的 Cu 合金化到 Ti-6Al-4V 中并没有改变腐蚀行为。具有磨削或喷砂表面的样本优于具有铸态表面的样本。两种溶液的色差和溶解速率不同。在含有过氧化氢的溶液中，Ti-55Ni 和 Ti-6Al-4V 合金的色差高于任何其他合金。 Ti、Ti-0.15Pd、Ti-7Nb-6Al、Ti-6Al-4V和Ti-10Cu合金在含氟溶液中表现出明显的色差和溶解。 Ti-20Cr 合金在两种溶液中显示出最小的色差和溶解。通过电化学石英晶体分析仪，我们没有发现色差与溶解之间存在显着的相关性。

项目成果

Corrosion resistance of experimental Ti-Cr dental casting alloys to fluoride

实验钛铬牙科铸造合金对氟化物的耐腐蚀性

• 发表时间: 2005
• 期刊: Archives of BioCeramics Research 5
• 作者: S.Takemoto;M.Hattori;M.Yoshinari;E.Kawada;Y.Oda
• 通讯作者: Y.Oda

Corrosion behavior and surface characterization of Ti-20Cr alloy in a solution containing fluoride.

• DOI: 10.4012/dmj.23.379
• 发表时间: 2004-09
• 期刊: Dental materials journal
• 影响因子: 2.5
• 作者: S. Takemoto;M. Hattori;M. Yoshinari;E. Kawada;K. Asami;Y. Oda

Corrosion resistance of dental alloys in gargle solutions

牙科合金在漱口液中的耐腐蚀性

• 发表时间: 2005
• 期刊: J J Dent Mater 24(1)
• 作者: S.Takemoto;M.Hattori;M.Yoshinari;E.Kawada;Y.Oda
• 通讯作者: Y.Oda

含嗽剤溶液中での歯科用合金の耐食性

牙科合金在漱口液中的耐腐蚀性

• 发表时间: 2005
• 期刊: 歯科材料・器械 24(1)
• 作者: 武本真治;服部 雅之;吉成 正雄;河田 英司;小田 豊
• 通讯作者: 小田 豊

Corrosion behavior of cast Ti-6A1-4V alloyed with Cu

Cu合金铸造Ti-6A1-4V的腐蚀行为

• 发表时间: 2005
• 期刊: Journal of Biomedical Materials Research Part B : Applied Biomaterials Volume 73B, Issue 2
• 作者: Marie Koike;Zhuo Cai;Yutaka Oda;Masayuki Hattori;Hiroyuki Fuj ii;Toru Okabe
• 通讯作者: Toru Okabe