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High temperature oxidation behavior of a kind of traditional austenitic heat-resistant cast steel
Preview AbstractBy continuous high temperature oxidation experiment, oxidation kinetic curve was obtained, combined with X-ray diffraction analysis, scanning electron microscope(SEM) along with chemical microanalysis by energy dispersive spectrometry(EDS), We systematic studied the oxidation performance and law of ZG40Cr25Ni20 in high temperature. The result showed that between 900℃ and 1000℃, it exhibited a good oxidation resistance ,the surface was covered with a compact protective scale Cr2O3 and MnCr2O4..However,when the temperature was up to 1100 ℃, the oxidation performance was severe, the oxidation scale contain NiCr2O4 and Fe3O4.