Chern Lin J H, Lo S J, Ju C P
Department of Materials Science and Engineering, National Cheng-Kung University, Tainan, Taiwan.
J Oral Rehabil. 1995 May;22(5):331-5. doi: 10.1111/j.1365-2842.1995.tb00781.x.
The present work provides experimental results of corrosion behaviour in Hank's physiological solution and some other properties of in-house fabricated titanium-cobalt alloys with cobalt ranging from 25-30% in weight. X-ray diffraction (XRD) shows that, in water-quenched (WQ) alloys, beta-titanium is largely retained, whereas in furnace-cooled (FC) alloys, little beta-titanium is found. Hardness of the alloys increases with increasing cobalt content, ranging from 455 VHN for WQ Ti-25 wt% Co to 525 VHN for WQ Ti-30 wt% Co. Differential thermal analysis (DTA) indicates that melting temperatures of the alloys are lower than that of pure titanium by about 600 degrees C. Potentiodynamic polarization results show that all measured break-down potentials in Hank's solution at 37 degrees C are higher than 800 mV. The breakdown potential for the FC Ti-25 Wt% Co alloy is even as high as nearly 1200 mV.
本研究提供了自制的钴含量在25%-30%（重量）范围内的钛钴合金在汉克氏生理溶液中的腐蚀行为实验结果以及其他一些性能。X射线衍射（XRD）表明，在水淬（WQ）合金中，大量的β钛得以保留，而在炉冷（FC）合金中，几乎找不到β钛。合金的硬度随着钴含量的增加而提高，范围从WQ Ti-25 wt% Co的455维氏硬度到WQ Ti-30 wt% Co的525维氏硬度。差示热分析（DTA）表明，合金的熔化温度比纯钛低约600摄氏度。动电位极化结果表明，在37摄氏度的汉克氏溶液中测量的所有击穿电位均高于800 mV。FC Ti-25 Wt% Co合金的击穿电位甚至高达近1200 mV。
