Effects of Ti addition on corrosion behavior of Zr-based metallic glass in chloride medium
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The effects of Ti element on the corrosion resistance of the metallic glass Zr51.3Al10Ni6Cu31.8Ag0.1Y0.8 in aqueous solution with various chloride concentrations were investigated, and the effect mechanism was discussed. X-ray diffraction confirmed that Ti-added Zr51.3Al10Ni6Cu31.8Ag0.1Y0.8 metallic glasses with diameter of 3 mm were all metallic glasses. Weight loss and electrochemical method were introduced to characterize their corrosion resistance, and X-ray photoelectron spectroscopy study was used to characterize the passive film composition. The results show that the corrosion resistance of metallic glass is significantly improved with Ti addition, and Zr dioxides dominate in passive film during corrosion when Ti content is low. High Ti addition can lead to an obvious accumulation of Ti dioxides, which results in a thicker, Ti-enriched protective passive film.
KeywordsZr-based metallic glass Amorphous alloy Titanium Corrosion resistance Electrochemical method Corrosion behavior
This work is supported by the National Natural Science Foundation of China [51434008 (U1435204), 51531005], China’s Manned Space Station Project (Mission No. TGJZ800-2-RW024), CAS Key Project “Research & Development of Nuclear Materials and Service Safety Assurance Technology” (ZDRW-CN-2017-1), DongGuan Innovative Research Team Program (2014607134), Shenyang Key R&D and Technology Transfer Program (Z17-7-001), Theme Special Project of Shenyang Key Science and Technology Research and Development Programs (17-85-0-00), and Double-hundred Program of Shenyang Science and Technology Innovation Project (Y17-2-036).
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