Abstract
The evolution of the breakdown of protective alumina scales on Fe–20Cr–5Alalloys has been studied by the use of taper-sectioned samples. The oxidationin air of two model alloys is compared with that of two commercial alloys,Kanthal APM and MA 956 at 1350°C. It is shown that the length of thebreakaway-oxidation region along the taper may be used to rank theperformance of the alloys and that the wedge geometry allows a detailedstudy to be made of the chemical processes involved in the degradation ofthe oxide scale just prior to breakaway oxidation.
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Al-Badairy, H., Tatlock, G.J. The Application of a Wedge-Shaped Sample Technique for the Study of Breakaway Oxidation in Fe–20Cr–5Al Base Alloys. Oxidation of Metals 53, 157–170 (2000). https://doi.org/10.1023/A:1004590915746
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DOI: https://doi.org/10.1023/A:1004590915746