不同的腐蝕條件對Ti-6Al-4V表面多孔性氧化層之影響

本研究分為三大部分：(1)利用低溫浸泡腐蝕方式，在Ti-6Al-4V 合金 (Ti-64)表面製備多孔性氧化層 (porous oxide layer; POL)；(2)表面機械加工及後續低溫浸泡腐蝕方式 (sand-blast, large grit and acid etched; SLA)，製備 Ti-64表面多孔性氧化層；(3)在腐蝕溶液中以電化學方式腐蝕，製備 Ti-64表面多孔性氧化層。本研究除了利用掃描式電子顯微術 (scanning electron microscopy; SEM)及表面輪廓儀 (α-step)分析POL表面形貌及表面粗糙度外，並利用拉曼光譜術 (Raman scattering spectroscopy; RSS)及洛氏硬度計 (HR15N)分析POL形成前後Ti-64表面結構及特性之變化情形。從中挑選出較具代表性之試片進行人類成骨細胞 (human osteoblast)貼附測試。結果發現：利用三種方法皆能在Ti-64表面製備出POL，但綜合所有測試數據與細胞貼附測試結果發現：以電化學方式腐蝕能得到最佳的多孔性氧化層與細胞貼附效果。希望能將此製程推廣應用於人工植牙之Ti-64牙根，預期在Ti-64牙根表面獲致加速骨整合之多孔性氧化層。

關鍵字

成骨細胞； HR15N ；表面輪廓儀；掃描式電子顯微術； SLA ；多孔性氧化層； Ti-6Al-4V ；拉曼光譜術

並列摘要

This study is divided into three parts：(1) Preparation of porous oxide layer (POL) on Ti-6Al-4V (Ti-64) surface by low temperature immerse corrosion. (2) Preparation of porous oxide layer on Ti-64 surface by SLA (sand blast, large grit and acid etched) process. (3) Preparation of porous oxide layer on Ti-64 surface by electrochemical corrodes in different etching solution. In this study, not only use of scanning electron microscopy (SEM) and α-step analysis POL surface topography and roughness, but also use of Raman spectroscopy and Rockwell hardness (HR15N) analysis before and after the formation of Ti-64 changes in surface structure and characteristics of the situation. Selected from the sample representative for human osteoblast adhesion test. The results showed that: Using three methods have received in the Ti-64 surface preparation of POL, but all test data and cell adhesion test results showed that: electrochemical corrosion can be the optimum preparation of porous oxide layer and the cell adhesion. Hope to promote this process applied to the Ti-64 dental implants, ,and the expected implant surface in the Ti-64 was caused by accelerated osseointegration of porous oxide layer.

並列關鍵字

SEM ； α-step ； SLA ； porous oxide layer ； Ti-6Al-4V

參考文獻

1. W. F. Smith, Structure and Properties of Engineering Alloy, 1st ed., McGraw-Hill Books Company, N.Y., pp. 411-457., 1981.

2. H. Kimura, O.Izumi, eds., Titanium’80 Science and Technology, Proc. 4th International Conference on Titanium, Kyoto, Japan, May 19-22, pp. 2205-2330, 1980.

4. B. Gong, C. B. Zhang, Z. H. Lai, Improvement of Superplastic Properties of Ti-6Al-4V Alloy by Temporary Alloying with Hydrogen, J.Mater. Sci. Let., vol. 13, pp. 1561-1563, 1994.

6. T. I. Wu, C. T. Liu and J. K. Wu, The Use of Thiourea to Inhibit Hydrogen Incorporation in Titanium and Ti-6Al-4V Alloy, Materials Letters, Vol.30, pp.377-383, 1997.

7. R. G. Vogt, F. H. Froes, D. Eylon and L. Levin, in Titanium Net Shape Technologies, TMS. Warrendale, PA, pp.145-153, 1984.

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不同的腐蝕條件對Ti-6Al-4V表面多孔性氧化層之影響

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