Effect of Si addition on microstructures and oxidation behavior of CoCrW alloy prepared by spark plasma sintering
Source abstract
Abstract
Three Stellite alloys with different Si contents (CCW, CCW-3Si and CCW-5Si) were prepared via spark plasma sintering. Their oxidation behavior at 800 °C was studied. After 200 h oxidation, oxide scale grown on the alloys CCW and CCW-3Si is mainly composed of Cr 2O 3 and CoCr 2O 4. While for the alloy CCW-5Si, SiO 2 formed at the alloy/scale interface, which inhibited effectively the outward diffusion of Co and ensured the formation of a pure and dense external Cr 2O 3 scale. Its oxidation resistance is significantly improved, and the parabolic rate constant accounts for less than one fifth of that of CCW.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Aluminum Alloys Composites Properties · Advanced materials and composites · Advanced ceramic materials synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (40)
Show source-provided references
1. Microstructural features and mechanical properties of a cobalt-based laser coating10.1016/S1359-6454(96)00250-9 ↗
2. Effects of alloyed Si on the oxidation behaviour of Co-29Cr-6Mo alloy for solid-oxide fuel cell interconnects10.1016/j.corsci.2015.02.036 ↗
3. Microstructure and phase analyses of Stellite 6 plus 6 wt% Mo alloy10.1016/S0924-0136(97)00027-7 ↗
4. Single asperity nanoscratch behaviour of HIPed and cast Stellite 6 alloys10.1016/j.wear.2014.02.006 ↗
5. Microstructural effects on the sliding wear resistance of a cobalt-based alloy10.1016/0043-1648(94)90089-2 ↗
6. Surface characterisation of Ni-free Co-Cr-W-based dental alloys exposed to high temperatures and the effects of adding silicon10.1016/j.corsci.2015.02.030 ↗
7. A first principles study of the stacking fault energies for fcc Co-based binary alloys10.1016/j.actamat.2017.07.010 ↗
8. Microstructure and mechanical property of a multi-scale carbide reinforced Co-Cr-W matrix composites10.3390/cryst12020198 ↗
9. Microstructure of as-cast Co-Cr-Mo alloy prepared by investment casting10.3938/jkps.72.947 ↗
10. Isothermal transformation of γ-Co to ε-Co in Stellite 6 coatings10.1007/s11661-018-5057-6 ↗
11. Z. Zak Fang, J.D. Paramore, P. Sun, K.S.R. Chandran, Y. Zhang, Y. Xia, F. Cao, M. Koopman, M. Free, Powder metallurgy of titanium-past, present, future: a review, Int. Mater. Rev. 63 (2018) 407–459.10.1080/09506608.2017.1366003 ↗
12. Corrosion resistances and passivation of powder metallurgical and conventionally cast 316L and 2205 stainless steels10.1016/j.corsci.2012.10.021 ↗
13. Assessing the kinetics and mechanisms of corrosion of cast and HIPed Stellite 6 in aqueous saline environments10.1016/j.corsci.2004.09.011 ↗
14. The role of microstructural development in the hydrothermal corrosion of cast and HIPed Stellite 6 analogues in simulated PWR conditions10.1016/j.corsci.2019.108141 ↗
15. A review of multi-physical fields induced phenomena and effects in spark plasma sintering: Fundamentals and applications10.1016/j.matdes.2020.108662 ↗
16. Pitting of 2024 alloys prepared by spark plasma sintering using powders with different sizes10.1016/j.corsci.2020.108525 ↗
17. Design and high-temperature tribological properties of CoCrW with rare earth fluoride composites10.1016/j.jmrt.2019.12.072 ↗
18. Sliding wear of blended cobalt based alloys10.1016/j.wear.2020.203533 ↗
19. Multi-spectroscopic analysis of high temperature oxides formed on cobalt-chrome-molybdenum alloys10.1016/j.jmrt.2022.08.071 ↗
20. High-temperature oxidation behaviour of CoCrNi medium-entropy alloy
21. High-entropy FeNiCoCr alloys with improved mechanical and tribological properties by tailoring composition and controlling oxidation10.1016/j.jmst.2020.12.042 ↗
22. Examining Cu content contribution on changes in oxide layer formed on selective-laser-melted CoCrW alloys10.1016/j.apsusc.2018.09.082 ↗
23. Microstructure, oxidation resistance and mechanical properties of stellite 12 composite coating doped with submicron TiC/B4C by laser cladding10.1016/j.surfcoat.2020.125810 ↗
24. Effect of Si on hot corrosion resistance of CoCrAlY coating10.1016/S1875-5372(18)30011-0 ↗
25. Influence of Si on microstructures and high-temperature properties of MCrAlY type coating10.1016/S1875-5372(18)30204-2 ↗
26. Characterization of oxide films on wrought Co-Cr-Mo-xSi alloys exposed to high-temperature oxidation10.1016/j.corsci.2021.109753 ↗
27. Corrosion behaviors of CoCrWAlx alloys by laser additive manufacturing in molten Al10.1016/j.corsci.2021.109874 ↗
28. Characterization of oxide films on wrought Co-Cr-Mo-xSi alloys exposed to high-temperature oxidation10.1016/j.corsci.2021.109753 ↗
29. A thermodynamic model for the stacking-fault energy10.1016/S1359-6454(98)00155-4 ↗
30. Stacking fault energy of face-centered-cubic high entropy alloys10.1016/j.intermet.2017.10.004 ↗
31. Tensile properties of low-stacking fault energy high-entropy alloys10.1016/j.msea.2015.03.109 ↗
32. Effects of Si concentrations on microstructure and mechanical properties of as-cast Co-Cr-Mo alloys10.1088/1757-899X/635/1/012006 ↗
33. A comparison of the oxidation behaviours of Al2O3 formers at 700 °C - Oxide solid solutions acting as a template for nucleation10.1016/j.corsci.2007.12.012 ↗
34. Liang · 1993
35. Ultrastrong nanocrystalline binary alloys discovered via high-throughput screening of the CoCr system10.1016/j.matdes.2021.109710 ↗
36. The alloying behaviour and mechanical properties of polycrystalline Ni3Al (γ' phase) with ternary additions10.1007/BF00543696 ↗
37. The Cr-Si (Chromium-Silicon) System
38. Thermodynamic assessments of the Cr-Si and Al-Cr-Si systems10.1016/j.jallcom.2017.03.042 ↗
39. Experimental reinvestigation of the CrSi-Si partial system and update of the thermodynamic description of the entire Cr-Si system10.1361/105497100770340066 ↗
40. Theoretical analysis of the diffusion processes determining the oxidation rate of alloys10.1149/1.2779605 ↗