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gas composition

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Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 783-794, October 21–24, 2019,
... on following three factors: deposit chemistry, gas constituents and metal alloy (or bond coating/thermal barrier coating) composition. This paper reports the activities involved in establishing modeling and simulation followed by testing/characterization methodologies in relevant environments to understand...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 892-902, October 22–25, 2013,
.... In order to understand the role of substrate composition on corrosion, a combination of commercial and model alloys were investigated with synthetic coal ash and gas compositions simulating air- and oxyfiring environments. Exposure temperatures ranged from 600°-800°C to cover current operating temperatures...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 360-370, October 22–25, 2013,
... contents to facilitate carbon capture and sequestration. To investigate the effects of changes in the gas composition on thermal barrier coating (TBC) lifetime, furnace cycling tests (1h cycles) were performed in air with 10, 50 and 90 vol.% water vapor and in CO 2 -10%H 2 O and compared to prior results...
Proceedings Papers

AM-EPRI2010, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Sixth International Conference, 255-267, August 31–September 3, 2010,
... that are accurate to ±1µm in order to discern differences in corrosion rates. Cranfield University used their high temperature burner rig for longer duration corrosion testing (up to 1000 hours) using a range of synthetic deposits and gas environments. The deposit and gas compositions were developed based...
Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 998-1003, October 21–24, 2019,
... with the specimens was placed in the test zone. Then, the autoclave was sealed followed by temperature and pressure increase to target testing conditions. The equipment schematics and detailed procedures are described in a previous wok by the authors [7]. Meanwhile, the gas compositions of both CO2 grades used...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 863-880, October 22–25, 2013,
... the combustion environments adjacent to the superheaters and reheaters of coal-fired boilers to be characterized under both air and oxy-firing conditions. The gas and deposit compositions were then simulated in a series of 1000-hour laboratory corrosion tests in which the corrosion performance of different...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 224-234, October 11–14, 2016,
... corrosion test is shown in Table 3[7]. The top surfaces of specimens were covered with synthetic ash, and placed on a tray in a test furnace with a quartz chamber, and then simulated coal combustion gas was supplied into the chamber. The gas composition was simulated combustion gas from high sulfur coal...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 1388-1396, October 22–25, 2013,
... thickness at the bottom of the rib is 5.7mm. Sample panel welding employed Alloy 622 filler metal wire measuring 1.2mm in diameter. Table 1 shows the chemical composition of the Alloy 622 filler wire used to produce the weld overlay samples in this study. A gas shielded metal arc welding (GMAW) overlay...
Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 1014-1023, October 21–24, 2019,
... EXPOSURES The use of laboratory exposures enables key degradation parameters (e.g., gas composition, deposit composition and flux, metal temperature and time) to be systematically varied and closely controlled. This has enabled the development of a much better understanding of the effects of these variables...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 310-317, October 11–14, 2016,
.... The ash composition (wt%) was 5% Na2SO4, 5% K2SO4, 30% Fe2O3, 30% Al2O3 and 30% SiO2 and the gas composition was 0.25% SO2, 3.5% O2, 15% CO2 314 and balance of N2. The samples were covered by a definite amount of ashes in an ethyl alchohol suspension. The ashes were renewed every 100 hours for the first...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 881-891, October 22–25, 2013,
... covered the half of sample. Table 1: Test matrix Gas composition T [°C] 2%O2-29%H2O44%CO20.6%SO2-0.2HClN2 650 720 Used deposit CaCO3 - 15 CaSO4 wt% CaCO3 - 14 wt% CaSO4-1 KCl CaCO3 - 15 CaSO4 wt% CaCO3 - 14 wt% CaSO4-1 KCl Material S34710, S31035, N06617 S34710, S31035, N06617 S34710, S31035 S34710...
Proceedings Papers

AM-EPRI2024, Advances in Materials, Manufacturing, and Repair for Power Plants: Proceedings from the Tenth International Conference, 495-506, October 15–18, 2024,
... in printing strategy e.g. stringer vs weaving beads, alternating printing direction or variation in shielding gas composition etc. which is the target of another study currently carried out. REFERENCES [1] R. Baker, Method of making decorative articles, US Patent 1,533,300 (1925) [2] A. Ujiie, Method...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 74-85, October 22–25, 2013,
... (equivalent to >90% reduction for a coalonly plant The effects of steam-side degradation and any enhancement due to oxy-combustion will also be included. The life model includes corrosion models that are derived from extensive laboratory testing and are a function of gas composition, deposition composition...
Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 771-782, October 21–24, 2019,
... cooled relative to the gas stream [5,6]. Deposited species can include alkali metal sulphates and chlorides, as well as compounds that contain calcium, magnesium, vanadium, silicon and aluminium [7,8]. Depending on the local gas compositions and substrate temperatures, such deposits can react to cause...
Proceedings Papers

AM-EPRI2010, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Sixth International Conference, 268-287, August 31–September 3, 2010,
... in the combustion facility at various locations 284 corresponding to the lower furnace walls and superheaters. The gas compositions were determined in-situ with online instrumentations, including FTIR, GC and Horiba multi-gas analyzer. The in-furnace gas measurements revealed the coexistence of reducing...
Proceedings Papers

AM-EPRI2024, Advances in Materials, Manufacturing, and Repair for Power Plants: Proceedings from the Tenth International Conference, 573-581, October 15–18, 2024,
... toughness. Consequently, a comprehensive examination of the welded joints outlines manufacturing conditions, limitations, and the applications of SDSS and HDSS filler metals. chemical composition corrosion performance gas tungsten arc welding impact toughness microstructure optical microscopy...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 1422-1431, October 22–25, 2013,
... containing alkali sulfate applied to the sample surface, so as to simulate fire-side coal ash deposition. Table 2 shows the conditions of the high temperature corrosion test regime. The target compositions of synthetic flue gas were (0.2 or 1.0)SO2+2.6O2+14CO2+10H2O+bal.N2 (vol to evaluate coal fuel...
Proceedings Papers

AM-EPRI2010, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Sixth International Conference, 303-311, August 31–September 3, 2010,
... the conditions of the high temperature corrosion test regime. The target compositions of synthetic flue gas were (0.02 or 0.20 or 1.0) SO2+2.6O2+14CO2+10H2O+bal.N2 (vol to 304 evaluate coal fuel with low, medium and high sulfur content respectively. The gas flowed through the test chamber at a rate of 200cc/min...
Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 830-835, October 21–24, 2019,
... and T. Goto, Compositional regions of single phases at 1800 ºC in Mo-rich Mo Si B ternary system , Materials Science and Engineering A, 552 (2012), pp. 179 188. [5] K. Yoshimi, T. Iizawa, S. Yamamoto, J. Nakamura, K. Maruyama, H. Katsui and T. Goto, Proc. Int. Gas Turbine Cong., (2015), pp. 319-327...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 213-223, October 11–14, 2016,
... and facilitate the design of Ni-base superalloys. compositional dependence gas turbine engines mechanical properties microstructure nickel-base superalloys niobium content phase precipitation phase stability physical properties Advances in Materials Technology for Fossil Power Plants Proceedings...