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Model alloys, Fe–20Cr and Fe–20Cr–20Ni without and with Si (0.1, 0.2 and 0.5 wt%), were exposed to Ar–20CO2 and Ar–20CO2–20H2O gases at 650 °C. The undoped alloys underwent breakaway corrosion in both gases, forming iron-rich oxide scales and internal carbide precipitates. Silicon additions markedly improved oxidation and carburization resistance of alloys in both gases by forming a duplex scale of...
An effective and low-cost method for applying polysilazane-based barrier coating on stainless steel is presented. A SiN (PHPS) precursor has been used for applications of polymeric and ceramic-like coating material. With precursor solution in dibutyl ether, AISI 304 stainless steel substrates were coated by means of a simple dip-coating technique. After pyrolysis stage at 800 °C, the efficiency of...
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