Electrochemical characterization of cast Ti-Hf binary alloys.
Electrochemical characterization of cast Ti-Hf binary alloys.
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铸造 Ti-Hf 二元合金的电化学表征。
DOI：
10.1016/j.actbio.2005.02.006
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
Okabe,T
中科院分区：
文献类型：
--
作者：
Cai,Z;Koike,M;Sato,H;Brezner,M;Guo,Q;Komatsu,M;Okuno,O;Okabe,T
本文研究了Ti-Hf二元合金在模拟口腔环境中的电化学行为。采用电弧熔炼法制备了Hf含量分别为10、20、25、30、35和40 mass%的Ti-Hf合金。使用牙科钛铸造系统和基于MgO的包埋料制备每种合金的试样（n=4）。用X射线照相术检查样本，以确保最小的内部孔隙率。将由纯钛和商业纯钛制成的铸件（n=4）用作对照。每个样本上的研磨平坦表面（10 mm × 10 mm）（去除约30μm）用于表征。在37°C下，在充气（空气+10%CO2）MTZ合成唾液中依次进行16小时开路电位（OCP）测量、线性极化和动电位阴极极化。在测试前2小时和测试期间，在相同的介质中进行动电位阳极极化，但脱气（N2+ 10%CO2）。极化电阻（RP）和塔菲尔斜率进行了测定，作为腐蚀电流密度（ICORR）和钝化电流密度（IPASS）。对结果进行非参数统计分析（α=0.05）。浸泡16小时后，所有样本的OCP稳定（平均值为− 229 mV至− 470 mV vs. SCE）。在阳极极化图上观察到所有金属的类似钝化。Kruskal-Wallis检验显示试验组间OCP存在显著差异（p=0.006）。各金属间的RP、ICOR、IPASS均无显著性差异（p>0.3）。结果表明，所研究的Ti-Hf合金的电化学行为类似于纯钛。
This study characterized the electrochemical behavior of Ti–Hf binary alloys in a simulated oral environment. Ti–Hf alloys (10, 20, 25, 30, 35 and 40 mass% Hf) were prepared by arc-melting titanium sponge and hafnium sponge. Specimens of each alloy (n=4) were prepared using a dental titanium casting system with a MgO-based investment. Specimens were inspected with X-ray radiography to ensure minimal internal porosity. Castings (n=4) made from pure titanium and commercially pure titanium were used as controls. The ground flat surface (10mm×10mm) on each specimen where approximately 30μm was removed was used for the characterization. Sixteen-hour open-circuit potential (OCP) measurement, linear polarization and potentiodynamic cathodic polarization were performed sequentially in aerated (air+10% CO2) MTZ synthetic saliva at 37°C. Potentiodynamic anodic polarization was conducted in the same medium but deaerated (N2+10% CO2) 2h before and during testing. Polarization resistance (RP) and Tafel slopes were determined, as were corrosion current density (ICORR) and passive current density (IPASS). Results were subjected to nonparametric statistical analysis (α=0.05). The OCP stabilized (mean values −229mV to −470mV vs. SCE) for all specimens after the 16-h immersion. Similar passivation was observed for all the metals on their anodic polarization diagrams. The Kruskal–Wallis test showed significant differences in OCP among the test groups (p=0.006). No significant differences were found in RP, ICORRor IPASSamong all the metals (p>0.3). Results indicate that the electrochemical behavior of the Ti–Hf alloys examined resembles that of pure titanium.
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影响因子：
14
作者：
Zhuo Cai;Hiroshi Nakajima;M. Woldu;Anders Berglund;Maud Bergman;Toru Okabe
通讯作者：
Zhuo Cai;Hiroshi Nakajima;M. Woldu;Anders Berglund;Maud Bergman;Toru Okabe
大鼠和仓鼠体内放射性铪的代谢：用于代谢研究的可能的钚类似物。
影响因子：
3.4
作者：
D. Taylor;M. Lehmann;F. Planas;A. Seidel
通讯作者：
A. Seidel
影响因子：
14
作者：
M. Koike;Z. Cai;H. Fujii;M. Brezner;T. Okabe
通讯作者：
M. Koike;Z. Cai;H. Fujii;M. Brezner;T. Okabe
影响因子：
14
作者：
Cai, Z;Shafer, T;Okabe, T
通讯作者：
Okabe, T
Hf-Ti合金的耐热水腐蚀性能
DOI：
--
发表时间：
1955
期刊：
影响因子：
--
作者：
Carver;E. Hayes
通讯作者：
E. Hayes