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Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 777-790, October 22–25, 2013,
... austenitic stainless steel boiler tubes combined water treatment exfoliation ferritic-martensitic steel hematite oxygen content steam oxidation Advances in Materials Technology for Fossil Power Plants Proceedings from the Seventh International Conference October 22 25, 2013, Waikoloa, Hawaii, USA...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 1417-1421, October 22–25, 2013,
... Abstract The high-temperature oxidation of Fe-9Cr-1Mo steel in a CO 2 environment, with varying oxygen content (0.6-3%), was investigated at 700°C. While the steel heavily oxidized in pure CO 2 , the oxidation mass gain decreased significantly with increasing oxygen content. Microscopic...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 1086-1097, October 11–14, 2016,
... was determined by an experimental test program. Hereby, the cracking of 2½% chromium steel T24 and 1% chromium steel T12 were determined in high-temperature water depending on the effect of water chemistry parameters such as dissolved oxygen content, pH, and temperature, but also with respect to the mechanical...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 1098-1112, October 11–14, 2016,
...-250°C, with high sensitivity in the range between 200 and 250°C. The critical temperature range said to be directly depended on the dissolved oxygen concentration of the water as well as a potential sulphur content of the alloy [2]. In a recent work by Metzger [26] the dependence of temperature...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 549-564, October 22–25, 2013,
... was approached with three more or less different tests. First investigations were performed using three point bending samples in autoclaves containing high temperature water. A buffer of air or nitrogen was added. The focus here was on the oxygen content of the medium. Different loading conditions were applied...
Proceedings Papers

AM-EPRI2007, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Fifth International Conference, 531-543, October 3–5, 2007,
... a closer match to service-grown scales. austenitic stainless steel cyclic oxidation test ferritic stainless steel oxygen content oxidation rate steam oxidation degradation steam exposure test steam oxidation testing superalloys Advances in Materials Technology for Fossil Power Plants...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 360-370, October 22–25, 2013,
... Abstract While the water vapor content of the combustion gas in natural gas-fired land based turbines is ~10%, it can be 20-85% with coal-derived (syngas or H 2 ) fuels or innovative turbine concepts for more efficient carbon capture. Additional concepts envisage working fluids with high CO 2...
Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 948-952, October 21–24, 2019,
... but cracked with 100 ppb DO under these conditions. Based on these results, the next planned step is to monitor crack growth in-situ and determine a critical DO content for each material. annealing crack growth dissolved oxygen ferritic stainless steel martensitic stainless steel microstructure...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 892-902, October 22–25, 2013,
.... As expected, metal loss was very sensitive to Cr content. A second set of model alloys also examined the effect of Co and Mo. INTRODUCTION Burning coal with oxygen rather than air is one strategy to assist in large-scale carbon capture and storage. One potential drawback for this approach...
Proceedings Papers

AM-EPRI2024, Advances in Materials, Manufacturing, and Repair for Power Plants: Proceedings from the Tenth International Conference, 62-73, October 15–18, 2024,
... from the upgraded Ar systems that provided a more controlled environment. Table 2 presents the chemical composition of the samples from Figure 5 in the as-received condition, as well as post-test in the upgraded argon and vacuum frames. No difference was observed in the oxygen content after testing...
Proceedings Papers

AM-EPRI2024, Advances in Materials, Manufacturing, and Repair for Power Plants: Proceedings from the Tenth International Conference, 843-854, October 15–18, 2024,
... weld has 848 relatively low toughness. The large number of thermal cycles due to reheating of the first layer could be affecting the microstructure. For welding of austenitic stainless steels, it has been reported that impact values increase as the oxygen content of the weld metal decreases [8...
Proceedings Papers

AM-EPRI2010, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Sixth International Conference, 886-899, August 31–September 3, 2010,
...). The cross section of the worn surface is represented in Figure 13. The worn surface also shows a cobalt- and nickel-depleted layer (5, 6 in Fig. 13). Going towards the surface the nickel- and oxygen-content increase while the chromium-content decreases (1, 2, 3, 4). The worn surface contains high oxygen...
Proceedings Papers

AM-EPRI2010, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Sixth International Conference, 762-786, August 31–September 3, 2010,
.... Flouride type fluxes with Basicity Index (B.I ) 2.7 and above are preferred. Low oxygen content is extremely beneficial to achieve satisfactory toughness. The oxygen contents of GTAW, SMAW and FCAW weld deposit are typically <100, 300-700 and 600 1000 ppm respectively. GTAW- weld metals gave superb...
Proceedings Papers

AM-EPRI2024, Advances in Materials, Manufacturing, and Repair for Power Plants: Proceedings from the Tenth International Conference, 669-677, October 15–18, 2024,
... The powder production requires highly pure raw materials with less than 0.1 % oxygen content are melted using an induction furnace. A jet of high-velocity inert gas, such as nitrogen, is then 671 used to break up the molten metal stream into fine droplets that solidify quickly to form an amorphous powder...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 66-73, October 11–14, 2016,
..., operating temperature, oxygen content in steam and other factors, such a problem is also arisen from the following two main factors: one is rapid wall cooling from outside to inside leading to oxide scale buckling and cracking under the action of thermal pressure stress; the other one is sudden change...
Proceedings Papers

AM-EPRI2007, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Fifth International Conference, 993-1000, October 3–5, 2007,
... reduced due to higher radiative properties of O2-combustion versus air-combustion, under certain conditions. Furthermore, a wider range of fuels can be burned due to the high oxygen content of the combustion gas and potential for high coal preheat. Any boiler size reduction may be limited by fuel ash...
Proceedings Papers

AM-EPRI2007, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Fifth International Conference, 968-981, October 3–5, 2007,
... are reheated by the gas-gas heat exchanger. Oxygen is introduced to the secondary recycle stream to bring the mixture oxygen content up to 23% oxygen, and the balance of oxygen is fed to the windbox / burner separately. 644°F 518°F 221°F 626°F 482°F Figure 4: Oxy-Combustion System Schematic with G-G Heat...
Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 939-947, October 21–24, 2019,
... is shown in Figure 1a. Oxygen sensors were used to monitor the water in and out of the autoclave. Figure 1b shows example data sets for two experiments. Both OT experiments had O2 contents of ~110ppb. The outgoing O2 content dropped in the OT experiment and increased during the AVT experiment, Figure 1b...
Proceedings Papers

AM-EPRI2024, Advances in Materials, Manufacturing, and Repair for Power Plants: Proceedings from the Tenth International Conference, 74-87, October 15–18, 2024,
... on measuring oxygen content after numerous build cycles. Additionally, powder can degenerate due to repeated exposure to the laser beam and associated process emission during LBPBF printing. Two different LBPBF machines, the Renishaw 500Q Flex and EOS M290, were used for this recyclability study. Oxygen...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 888-899, October 11–14, 2016,
... compound For a given precipitate and temperature then, the rate of internal attack depends on alloy Al content and oxygen permeability. Of the three Ni-base alloys Haynes 282, 230 and HR160, alloy 282 has the highest value of NAl, but also shows the highest rate of internal attack. Assuming DO...