Investigation on the hot corrosion behavior of a single crystal Ni-based superalloy in molten Na2SO4+K2SO4 salts improved by different preoxidation treatments
Source abstract
Abstract
This study investigated the hot corrosion behavior of N5 in molten sulfate at 850 ℃ after different peroxidation treatments. The preoxidation was conducted at 900, 1000 and 1100 ℃ for 20 and 100 h, respectively. The preformed oxide scale featured a multilayered structure and varying degrees of Ta oxides. Among all, the samples preoxidized at 900 ℃ exhibited the highest corrosion resistance . But a porous structure with a large number of internal oxides and sulfides was observed when preoxidized at 1000 and 1100 ℃. The alloy without preoxidation directly reacted with the molten salt to form a porous structure with internal oxides and sulfides.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: High-Temperature Coating Behaviors · Metallurgical Processes and Thermodynamics · High Temperature Alloys and Creep
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (45)
Show source-provided references
1. Hot corrosion of materials: a fluxing mechanism?10.1016/S0010-938X(01)00057-9 ↗
2. High temperature behavior of superalloys exposed to sodium chloride: I. mechanical properties10.1007/BF02649631 ↗
3. Mechanisms of Na2SO4-induced accelerated oxidation10.1016/0010-938X(75)90036-0 ↗
4. A method for investigation of hot corrosion by gaseous Na2SO410.1016/j.corsci.2013.04.006 ↗
5. Hot corrosion in gas turbine components10.1016/S1350-6307(00)00035-2 ↗
6. High temperature corrosion of superalloys10.1080/02619180.1986.11753324 ↗
7. Effect of surface treatment and crystal orientation on hot corrosion of a Ni-based single-crystal superalloy10.1016/j.corsci.2020.108472 ↗
8. Influence of alloying elements on hot corrosion resistance of nickel-based single crystal superalloys coated with Na2SO4 salt at 900℃10.1016/j.matdes.2020.109197 ↗
9. Hot corrosion behavior of superalloys10.1016/j.matpr.2020.02.226 ↗
10. Microstructure and hot corrosion behaviors of two Co modified aluminide coatings on a Ni-based superalloy at 700℃10.1016/j.apsusc.2014.05.043 ↗
11. Investigation of the mechanisms of Type-II hot corrosion of superalloy CMSX-410.1016/j.corsci.2013.11.048 ↗
12. Studies on corrosion behavior of a single-crystal superalloy and its sputtered nanocrystalline coatings with solid NaCl deposit in O2 + 38 vol% H2O environment at 700℃10.1016/j.corsci.2019.108187 ↗
13. Influence of Cr content on hot corrosion and a special tube sealing test of single crystal nickel base superalloy10.1016/j.corsci.2019.05.001 ↗
14. Hot corrosion of a single crystal Ni-base superalloy by Na-salts at 900℃10.1007/s11085-006-9004-3 ↗
15. Preparation and hot corrosion behaviour of an Al-gradient NiCoCrAlYSiB coating on a Ni-base superalloy10.1016/j.corsci.2009.01.003 ↗
16. Hot corrosion behaviour of a Ni+CrAlYSiN composite coating in Na2SO4-25 wt% NaCl melt10.1016/j.apsusc.2012.12.012 ↗
17. Hot corrosion behaviour of low Al NiCoCrAlY cladded coatings reinforced by nano-particles on a Ni-base superalloy10.1016/j.corsci.2010.07.011 ↗
18. High-temperature oxidation and hot-corrosion behavior of a sputtered NiCrAlY coating with and without aluminizing10.1016/j.surfcoat.2005.10.042 ↗
19. Evaluation of hot corrosion resistance of HVOF coatings on a Ni-based superalloy in molten salt environment10.1016/j.msea.2006.05.099 ↗
20. Effect of pre-oxidation on the hot corrosion of CoNiCrAlYRe alloy10.1016/j.corsci.2010.09.045 ↗
21. Influence of pre-oxidation on the hot corrosion of M38G superalloy in the mixture of Na2SO4-NaCl melts10.1016/j.msea.2008.04.046 ↗
22. Influence of pre-oxidation on the hot corrosion of DZ68 superalloy in the mixture of Na2SO4-NaCl10.1016/S1005-0302(10)60143-0 ↗
23. Isothermal oxidation comparison of three Ni-based superalloys10.1007/s11665-017-2630-x ↗
24. Early stages of high temperature cyclic oxidation of an electrodeposited ceria coating on nickel superalloys under water-drop tests10.1007/s11085-013-9426-7 ↗
25. Modelling of high temperature oxidation of alumina-forming single-crystal nickel-base superalloys10.1016/j.actamat.2012.06.036 ↗
26. Modelling and analysis of the oxidation influence on creep behaviour of thin-walled structures of the single-crystal nickel-base superalloy René N5 at 980℃10.1016/j.actamat.2009.11.004 ↗
27. Ta effect on oxidation of a nickel-based single-crystal superalloy and its sputtered nanocrystalline coating at 900-1100℃10.1016/j.apsusc.2015.03.157 ↗
28. Oxidation behavior of a nanocrystalline coating with low Ta content at high temperature10.1016/j.corsci.2020.109182 ↗
29. Diffusion of Ta and its influence on oxidation behavior of nanocrystalline coatings with different Ta, Y and Al contents10.1016/j.corsci.2017.07.017 ↗
30. Mechanism of beneficial effect of tantalum in hot corrosion of nickel-base superalloys10.1149/1.2133502 ↗
31. Role of tantalum in the hot corrosion of a Ni-base single crystal superalloy10.1016/j.corsci.2015.05.066 ↗
32. Interaction of Ta and Cr on type-I hot corrosion resistance of single crystal Ni-base superalloys10.1016/j.corsci.2017.01.011 ↗
33. Hot corrosion of arc ion plating NiCrAlY and sputtered nanocrystalline coatings on a nickel-based single-crystal superalloy10.1016/j.corsci.2017.04.004 ↗
34. Design and development of hot corrosion-resistant nickel-base single-crystal superalloys by the d-electrons alloy design theory. 2. Effects of refractory-metals Ti, Ta, and Nb on microstructures and properties10.1007/BF02646524 ↗
35. Hot corrosion behavior of Ni-based superalloy with high Cr contents-part 1. Experimental study
36. Kinetic oxidation model including the transient regime for a single crystal nickel-based superalloy over the temperature range 750-1300℃10.1016/j.corsci.2022.110485 ↗
37. Sodium sulfate in gas turbines10.5006/0010-9312-11.12.17 ↗
38. Effect of composition on the oxidation and hot corrosion resistance of NiAl doped with precious metals10.1016/S0257-8972(00)00878-1 ↗
39. High-temperature corrosion of superalloys10.1080/02670836.1987.11782259 ↗
40. Oxidation behavior of sputter-deposited NiCrAlY coating10.1016/S0257-8972(02)00738-7 ↗
41. Theoretical analysis of the diffusion process determining the oxidation rate of alloys10.1149/1.2779605 ↗
42. Reaktionstypen bei der oxydation von legierungen
43. Hot corrosion of a plasma sprayed Ni3Al coating on a Ni-base superalloy10.1002/maco.200704072 ↗
44. Hot-corrosion resistance of a sputtered K38G nanocrystalline coating in molten sulfate at 900℃10.1023/A:1015356522798 ↗
45. Protective coatings - purpose, role, and design10.1179/mst.1986.2.3.194 ↗