Abstract
For more than 50 years, scientists have studied the “magic dust” of high-temperature oxidation—certain oxygen active or “reactive” elements which, when added to alloys in small quantities, effect profound improvements in their oxidation resistance. In general, high-temperature oxidation resistance is achieved by the oxidation of one or more alloy components to form a dense, stable, slow-growing, external oxide layer, or ’scale” such as α-Cr2O3, α-Al2O3, or SiO2. When added properly, reactive elements have a beneficial effect on the formation and growth of both α-Cr2O3and α-Al2O3scales. A standard list of reactive element (RE) effects would include: (1) an improvement in scale adhesion or resistance to spallation, (2) a change in the scale growth mechanism, (3) a reduction in the oxidation rate, related to the change in mechanism, (4) a modification in the scale microstructure, and (5) in the case of alloys that form Cr2O3scales, an improvement in selective oxidation, meaning that a lower Cr concentration in the alloy is required to form and maintain an external Cr2O3scale.
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Dates
Type | When |
---|---|
Created | 9 years ago (Aug. 8, 2016, 5:33 a.m.) |
Deposited | 1 year, 2 months ago (June 18, 2024, 3:27 p.m.) |
Indexed | 1 month, 3 weeks ago (July 7, 2025, 8:05 a.m.) |
Issued | 30 years, 11 months ago (Oct. 1, 1994) |
Published | 30 years, 11 months ago (Oct. 1, 1994) |
Published Online | 11 years, 9 months ago (Nov. 29, 2013) |
Published Print | 30 years, 11 months ago (Oct. 1, 1994) |
@article{Pint_1994, title={Limitations on the Use of Surface Doping for Improving High-Temperature Oxidation Resistance}, volume={19}, ISSN={1938-1425}, url={http://dx.doi.org/10.1557/s0883769400048181}, DOI={10.1557/s0883769400048181}, number={10}, journal={MRS Bulletin}, publisher={Springer Science and Business Media LLC}, author={Pint, B.A.}, year={1994}, month=oct, pages={26–30} }