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<p>The research article reports the hot and dry corrosion behaviour of titanium-based novel Ti-3Al-2.5&#xa0;V composite. Hot and dry corrosion behaviour of the titanium composite was analyzed by incorporating the WC material as reinforcement. It has been developed using Powder metallurgy technique. Different weight percentages (wt%) of WC particles (0.5, 1.0, 1.5, and 2.0) were added to the Ti-3Al-2.5&#xa0;V alloy powders and the composites were subjected to microwave sintering process for the temperature of 1300&#xa0;°C. Ti-3Al-2.5&#xa0;V + WC composites were the subject of various experimentation such as TAFEL Polarization and electrochemical impedance using 3.5 wt% of NaCl solution at room temperature. Three consecutive days, the Ti-3Al-2.5&#xa0;V + WC composites were subjected to heat up to 850&#xa0;°C in a hot corrosion experiment using 75% Na<sub>2</sub>SO<sub>4</sub> and 25% NaCl. The composites density and porosity analyses showed that the addition of WC increased its density, with Ti-3Al-2.5&#xa0;V + 0.5 WC demonstrating a 95% densification. However, hot corrosion in Na<sub>2</sub>SO<sub>4</sub>/NaCl at 850&#xa0;°C was performed on Ti-3Al-2.5&#xa0;V + WC; the corrosion resistance was significantly improved.</p>

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Effect of tungsten carbide addition on the corrosion behaviour of sintered Ti-3Al-2.5 V composites in sodium sulfate and sodium chloride environments

  • 期刊论文

  • 发表日期：

    2026年3月4日

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  • T. Ramkumar,
  • V. Vigneshkumar,
  • P. Muthusamy,
  • M. Selvakumar,
  • N. Radhika,
  • P. Chandramohan

摘要

The research article reports the hot and dry corrosion behaviour of titanium-based novel Ti-3Al-2.5 V composite. Hot and dry corrosion behaviour of the titanium composite was analyzed by incorporating the WC material as reinforcement. It has been developed using Powder metallurgy technique. Different weight percentages (wt%) of WC particles (0.5, 1.0, 1.5, and 2.0) were added to the Ti-3Al-2.5 V alloy powders and the composites were subjected to microwave sintering process for the temperature of 1300 °C. Ti-3Al-2.5 V + WC composites were the subject of various experimentation such as TAFEL Polarization and electrochemical impedance using 3.5 wt% of NaCl solution at room temperature. Three consecutive days, the Ti-3Al-2.5 V + WC composites were subjected to heat up to 850 °C in a hot corrosion experiment using 75% Na2SO4 and 25% NaCl. The composites density and porosity analyses showed that the addition of WC increased its density, with Ti-3Al-2.5 V + 0.5 WC demonstrating a 95% densification. However, hot corrosion in Na2SO4/NaCl at 850 °C was performed on Ti-3Al-2.5 V + WC; the corrosion resistance was significantly improved.