Krupa D, Baszkiewicz J, Mizera J, Borowski T, Barcz A, Sobczak J W, Biliński A, Lewandowska-Szumieł M, Wojewódzka M
Department of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141, 02-507 Warsaw, Poland.
J Biomed Mater Res A. 2009 Mar 1;88(3):589-98. doi: 10.1002/jbm.a.31900.
The paper presents the results of examinations of the corrosion resistance of titanium after its being subjected to the surface modification by the alkali- and heat-treatments. The material examined was commercially pure titanium (grade 2). The samples were soaked in an aqueous 10M NaOH solution at 60 degrees C for 24 h and subsequently heated at 500, 600, or 700 degrees C for 1 h. The chemical composition of the surface layers was determined by X-ray photoelectron spectroscopy and secondary ion mass spectroscopy. The phases present in the layers were identified by XRD. The corrosion resistance was evaluated by electrochemical methods (Stern's method, potentiodynamic method, and impedance spectroscopy) at a temperature of 37 degrees C after short- and long-time exposures. The 13 h exposure was aimed to allow the corrosion potential to stabilize. The aim of the long-term exposures was to examine how the corrosion resistance of the modified samples changes during the exposure. Under the conditions prevailing during the experiments, the highest corrosion resistance was achieved with the samples heated at a temperature of 700 degrees C.
本文介绍了经过碱热处理进行表面改性后的钛的耐腐蚀性检测结果。所检测的材料为工业纯钛（2级）。将样品在60℃的10M氢氧化钠水溶液中浸泡24小时，随后在500、600或700℃下加热1小时。通过X射线光电子能谱和二次离子质谱法测定表面层的化学成分。用XRD鉴定层中存在的相。在37℃温度下，通过电化学方法（斯特恩法、动电位法和阻抗谱）对短期和长期暴露后的耐腐蚀性进行评估。13小时的暴露旨在使腐蚀电位稳定。长期暴露的目的是研究改性样品在暴露过程中耐腐蚀性如何变化。在实验所采用的条件下，加热至700℃的样品具有最高的耐腐蚀性。
