High-Temperature Oxidation Study in a Multi-Oxidant Environment Using 18O Tracer

被引:0
|
作者
Lehmusto, Juho [1 ]
Ievlev, Anton [2 ]
Kurley, James [3 ]
Pint, Bruce A. [4 ]
机构
[1] Abo Akad Univ, Lab Mol Sci & Engn, High Temp Proc & Mat, Turku, Finland
[2] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN USA
[3] Oak Ridge Natl Lab, Nucl Energy & Fuel Cycle Div, Oak Ridge, TN 37831 USA
[4] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN USA
关键词
High-temperature oxidation; Water vapor; Ni-based alloys; O-18-enriched water; FERRITIC STAINLESS-STEEL; WATER-VAPOR; THERMAL-OXIDATION; ELECTRICAL-CONDUCTIVITY; FE-CR; ALLOYS; BEHAVIOR; RESISTANCE; TITANIUM; SCALES;
D O I
10.1007/s11085-024-10323-1
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
The goal of this study was to use O-18-enriched water to better understand the role of H2O in high-temperature oxidation. Seven model and three commercial M-Cr and M-Cr-Al alloys were studied in air with 10% of H2O at 800 degrees C for 5 h. Oxygen from water vapor was more reactive than oxygen from the air and O-18 enriched at the outermost layers of the formed Cr- and Al-rich oxides. Alloys with Al and/or Ti additions showed signs of internal oxidation but O-18 was not enriched inside the alloy in locations with internal oxidation. Depending on the alloy Al content, the oxide went from Al oxidation beneath a chromia scale to external alumina scale formation.
引用
收藏
页码:14 / 18
页数:5
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