Isothermal oxidation tests were performed on Ti6242S (Ti—6% Al—2% Sn—4% Zr—2% Mo, 0.08% Si), Ti6246 (Ti—6% Al—2% Sn—4% Zr—6% Mo, 0.05% Si), TiXT (Ti—0.45% Si) alloys and pure titanium in laboratory air at 560 °C, 600 °C and 650 °C for 1000 h to compare their oxidation behaviors. This study aims to highlight the role of molybdenum and silicon in the oxidation resistance of titanium alloys. The results show that 6 wt.% of Mo in Ti6246 alloys does not substantially change the oxidation behavior compared to Ti6242S alloy containing only 2 wt.% of Mo. Meanwhile, the presence of 0.45 wt.% Si seems to be clearly beneficial for the oxidation resistance, reducing the parabolic rate constant by a factor larger than 2 as compared to pure titanium.

对 Ti6242S（Ti-6% Al-2% Sn-4% Zr-2% Mo，0.08% Si）、Ti6246（Ti-6% Al-2% Sn-4% Zr-6% Mo）进行等温氧化试验, 0.05% Si)、TiXT (Ti-0.45% Si) 合金和纯钛在实验室空气中在 560 °C、600 °C 和 650 °C 下 1000 小时，以比较它们的氧化行为。本研究旨在突出钼和硅在钛合金抗氧化性中的作用。结果表明，与仅含有 2 wt.% Mo 的 Ti6242S 合金相比，Ti6246 合金中 6 wt.% 的 Mo 不会显着改变氧化行为。同时，0.45 wt.% Si 的存在似乎明显有利于抗氧化性，与纯钛相比，抛物线速率常数降低了 2 倍以上。