Journal
CORROSION SCIENCE
Volume 166, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2020.108430
Keywords
Titanium; Oxidation behavior; Anti-oxidation mechanism; Coherent Ti2N layer
Funding
- National Key R&D Program of China [2016YFB0301200]
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A novel Ti-0.5Nb-0.5Si (in wt.%) alloy is oxidized at 650 similar to 850 degrees C for 100 h in air, which shows a significant higher oxidation resistance than pure Ti. The advantage of the alloy becomes more obvious with increasing temperature. At 850 degrees C for 100 h, mass gain of the alloy only accounts for 12.7% of that of the pure Ti. A key reason is the formation of a Ti2N layer coherent with Ti matrix. The oxide scale of the alloy with less porosity and alleviated stratification creates an environment at the scale/substrate interface favorable for the formation of Ti2N.
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