Search Results for iron oxide

Fig. 3 Theoretical equilibrium relationship between iron, iron oxide, hydrogen, and water vapor More

Fig. 11 Effects of slag basicity and iron oxide on sulfur distribution ratio. Source: Ref 5 More

Fig. 8 (a) Entrapment of iron oxide and Mg-Ce-Al-Si inoculant at the origin of a fractured ductile iron casting showing the origin. Original magnification: 7.5×. (b) Higher magnification view of the origin. Original magnification: 50× More

Fig. 27 (a) Entrapment of iron oxide and Mg-Ce-Al-Si inoculant at the origin of a fractured ductile iron casting showing the origin. Original magnification: 7.5×. (b) Higher-magnification view of the origin. Original magnification: 50× More

Fig. 18 Nitrided and postoxidized C15. Oxidation just began; iron oxides partially cover the porous compound layer below. Courtesy of IWT Bremen, Germany More

Fig. 12 Distribution map of yttrium in the oxide scale of an iron-base oxide-dispersion-strengthened superalloy. During annealing at high temperatures (1100 °C, or 2010 °F) in air, yttrium diffuses along cracks to the surface of the oxide scale. In the alloy, yttrium is distributed More

Fig. 19 Prediction of oxide growth for iron compared with experimental data. Source: Ref 91 More

Fig. 12 (a) Duplex structure (sulfide/oxide) in MgFeSi treated iron. (b) After Mg-FeSi treatment. (c) After inoculation More

Fig. 19 Optical micrograph of dross oxide films in ductile iron. Reprinted with permission from the American Foundry Society. Source: Ref 14 More

Fig. 2 (a) Metal-to-metal oxide equilibria for common elements used in powder metallurgy. Copper, lead, cobalt, nickel, and tin oxide are easier to reduce than iron oxide. (b) Iron-to-iron oxide equilibria More

exposed cast surface is now covered with a very thin, uniform layer of iron oxide. (d) After second reduction cycle. The cast surface is now free of all original cast scale, sand inclusions, and exposed graphite flakes. The final reduction cycle also removes the thin layer of iron oxide that was formed More

Fig. 18 Effect of oxidation on FMR in single-crystal iron whisker. A, unoxidized; B, C, D, E, and F were oxidized for 1.5, 3, 10, 45, and 240 min, respectively. The numbers describe the relative sensitivities of the spectrometer. More

Fig. 68 Oxidation potential of alloying elements and iron in steel heated in endothermic gas with an average composition of 40% H 2 , 20% CO, 1.5% CH 4 , 0.5% CO 2 , 0.28% H 2 O (dewpoint, 10 °C, or 50 °F), and 37.72% N 2 . Source: Ref 30 More

Fig. 14 Cyclic oxidation behavior of three iron-base heat-resistant alloys at 980 °C (1800 °F) More

Fig. 23 Oxidation potentials of various alloying elements and iron in an endothermic gas atmosphere at 930 °C (1700 °F). Source: Ref 60 More

Fig. 99 Oxidation potential of alloying elements and iron in steel heated in endothermic gas with an average composition of 40% H 2 , 20% CO, 1.5% CH 4 , 0.5% CO 2 , 0.28% H 2 O (dewpoint, 10 °C, or 50 °F), and 37.72% N 2 . Source: Ref 43 More

Fig. 45 Microstructures of oxidized gray iron. (a) 650 °C (1200 °F), three layers of oxide. Original magnification: 250×. (b) 750 °C (1380 °F), two layers of oxide. Original magnification: 125×. (c) Oxidation around graphite flakes. Original magnification: 300×. Copyright 1968. Gordon More

Fig. 45 (a) Forescattered electron micrograph of iron surface before oxidation. (b, c) Environmental scanning electron microscope/secondary electron micrographs during oxidation. (d) Secondary electron micrograph of focused ion beam (FIB)-milled cross section showing oxide scale thickness More

Fig. 8 Surface morphology and elemental distribution in scales formed on type 304 stainless steel during exposure to single and bipolar exposure conditions. (a) Formation of uniform surface oxide layer in air. (b) Development of local iron-oxide-rich nodules during exposure to bipolar More