Author
X. He
Bio: X. He is an academic researcher from University of Western Ontario. The author has contributed to research in topics: Crevice corrosion & Intergranular corrosion. The author has an hindex of 3, co-authored 3 publications receiving 73 citations.
Papers
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TL;DR: In this paper, the effects of iron content on the microstructure and crevice corrosion of grade-2 titanium (Ti-2) were studied using a galvanic coupling technique combined with optical microscopy and spectroscopy.
Abstract: The effects of iron content on the microstructure and crevice corrosion of Grade-2 titanium (Ti-2) were studied using a galvanic coupling technique combined with optical microscopy and sec...
46 citations
TL;DR: In this paper, a crevice corrosion damage function was developed for grade-2 titanium in 0.27-mol/dm3 NaCl at 95-°C, and the damage was determined by plotting the maximum penetration depth in μm as a function of time (days).
22 citations
TL;DR: In this article, the passive corrosion properties of Grade-7 titanium (Ti-7) have been studied at elevated temperatures up to 150°C and as a function of time at a constant temperature of 150°c in 0.27 mol/L sodium chloride (NaCl) solution using a combination of open-circuit potential and electrochemical impedance spectroscopy (EIS) measurements.
Abstract: The passive corrosion properties of Grade-7 titanium (Ti-7) have been studied at elevated temperatures up to 150°C and as a function of time at a constant temperature of 150°C in 0.27 mol/L sodium chloride (NaCl) solution using a combination of open-circuit potential and electrochemical impedance spectroscopy (EIS) measurements. It was found that the influence of temperature on the passive behavior of Ti-7 depended on the manner in which the temperature was changed. If the temperature was raised slowly in 10°C steps, passivity was maintained up to 150°C, but metastable breakdown events commenced once the temperature was increased to ≥70°C. These events could be associated with the active dissolution of Fe-stabilized β-phase and/or TixFe particles in grain boundaries. Impedance analyses showed that the changes in film resistance and capacitance were observable but minor. If the temperature was raised very rapidly to 150°C, an observable film breakdown occurred, leading to a drop of >150 mV in corr...
11 citations
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TL;DR: In this article, the corrosion behavior of biocompatible β titanium alloys was investigated in 0.9% NaCl and 5m HCl solutions, and the performance of the alloys in terms of the volume fraction of the constituent phases and partitioning of alloying elements between these phases.
135 citations
TL;DR: In this paper, a supervised neural network (NN) method was used as a data mining tool to predict corrosion behavior of metal alloys, and the NN model learned the underlying laws that map the alloy's composition and environment to the corrosion rate.
90 citations
TL;DR: In this paper, the corrosion behavior of investment cast and friction stir (FS) processed Ti-6Al-4V alloy was studied in HCl solution FS processing was performed with the peak temperatures both above and below the β transus All of the samples exhibited active passive transitions in deaerated 5% HCl at room temperature, but the β FS processed samples exhibited superior corrosion behaviour.
81 citations
TL;DR: In this paper, a static diffusion couple method is used to simulate the complex reaction mechanisms occurring at the tool-chip interface during machining and is validated with dynamic turning trials with two graphite rods which secure the sample under a clamping load at the required temperature and pressure.
77 citations
TL;DR: In this article, the corrosion and wear behavior of wrought titanium alloys (Ti-Grade 2, Ti6Al4V and Ti6al4V-ELI) immersed in phosphate buffered solution (PBS) with bovine serum albumin (BSA) has been analyzed by electrochemical techniques and surface microscopy.
70 citations