A comparison of the corrosion behaviour and surface characteristics of vacuum-brazed and heat-treated Ti6Al4V alloy

T. M. Lee, E. Chang, C. Y. Yang

研究成果: Article同行評審

10 引文 斯高帕斯(Scopus)

摘要

The corrosion characteristics of the brazed Ti6Al4V specimens were analyzed and compared with respect to the conventionally heat-treated specimens by an electrochemical corrosion test. The object of this research was to explore the potentiality of the brazed titanium for biomaterials. The characteristics of the 1300 °C heat-treated and the 970 °C brazed specimens, with passivation and sterilization treatment, were evaluated by measurement of corrosion potential, Ecorr, corrosion current densities, Icorr, polarization resistance of the reacted surface films, Rp, in a potentiodynamic test. The experimental results show that the corrosion rates of the heat-treated and the brazed samples are similar at Ecorr, and the value of Ecorr for the brazed sample is noble to the heat-treated samples. The passive current density of the brazed specimen is either lower or higher than the heat-treated specimen, depending on the polarization potential. By Auger electron spectroscopic and high-resolution X-ray photoelectron spectroscopic analysis on specimens from the potentiostatic test, the elements of copper and nickel in the brazing filler were not detected while less alumina was found in the reacted film of the brazed specimens when compared with the heat-treated specimens. The implication of the results is discussed.

原文English
頁(從 - 到)429-437
頁數9
期刊Journal of Materials Science: Materials in Medicine
9
發行號8
DOIs
出版狀態Published - 1998 7月 1

All Science Journal Classification (ASJC) codes

  • 生物物理學
  • 生物工程
  • 生物材料
  • 生物醫學工程

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