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superheated steam

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Proceedings Papers

ITSC 2021, Thermal Spray 2021: Proceedings from the International Thermal Spray Conference, 307-314, May 24–28, 2021,
..., the oxidation behavior of two cobalt base alloys, CoCrMoSi (T14) and CoCrNiMoSi (T19), was evaluated in superheated steam (SHS, 0.1MPa) at 800 °C for up to 500 hours. After the exposure, both T14 and T19 alloys experienced weight gain caused by oxidation. Visual observation and SEM surface analysis revealed...
Proceedings Papers

ITSC1998, Thermal Spray 1998: Proceedings from the International Thermal Spray Conference, 951-956, May 25–29, 1998,
... < Ih hJJLiL3 loqurg Tube Corroded Uncorroded Fig. 4 The microstructures of the corroded and uncorroded areas on evaporator tube. 20000hrs 87000hrs Tube ^ *S! 200 jam \ ,1 200 um /J t / Fig. 5 Corrosion resistance effect of 50Ni-50Cr alloy plasma sprayed coating applied to superheater tube. deposit was in the level of 20 mg/cm2 per year for tubes rate was 7.14 mg/cm2 per year. From this data, it is with no sprayed coating. After plasma spray application to apparent that the rate of increase in the internal deposit was boiler tubes in this boiler, three examinations accompanied suppressed by the plasma spray coating. The plasma spray by periodic checks were conducted in the seven years from coating on the fire-side of boiler tube may be a factor in 1986 to 1993, and the determined value of the deposition the deposition on inner side of the tubes. Water-side 954 corrosion in boiler tubes, which often occurs due to the ,10Q>irn passage of boiler water and superheated steam, has already been described. The value of pH in boiler water is always An example of chemical analysis(Wt controlled in the alkaline range. In long-term boiler Fe304 89.8, CaO 2.34, Mn 1.73, ZnO 0.30, operation, the localized concentration of alkaline...