Analysis of structure and microhardness of Al2O3-40 wt.% TiO2/NiCoCrAl gradient coating with in-situ needle-like phase reinforcement after high-temperature treatment
Source abstract
Abstract
Abstract This study investigated the structural evolution and microhardness of Al2O3–40 wt.% TiO2/NiCoCrAl gradient coatings deposited by atmospheric plasma spraying (APS) after high-temperature treatment carried out at 800 °C in air for 600 h. The gradient region exhibited a different ceramic growth and oxidation behaviour at different zones. The nonhomogeneous needle-like γ-Al2O3 phase was formed at the ceramic region, whereas the homogeneous needle-like NiAl2O4 phase was formed at the NiCoCrAl oxidation region close to the ceramic coating. And the ingrowth Cr-rich phase existed inside the NiCoCrAl splats at the gradient region close to the bond coating. An obviously microhardness improvement of the coating can be measured by a Vickers microhardness tester. The formation of the needle-like phase has an effect on the reinforcement of coating.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: High-Temperature Coating Behaviors · Advanced materials and composites · Metal and Thin Film Mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (58)
Show source-provided references
1. Effect of YSZ-dopant on microstructure and hardness property of the Al2O3–40%TiO2 plasma sprayed coating10.1088/2053-1591/aad1d5 ↗
2. Effects of TiO2 on the mechanical properties of the Al2O3–TiO2 plasma sprayed coating10.1016/j.jeurceramsoc.2006.04.099 ↗
3. Plasma spraying of dense ceramic coating with fully bonded lamellae through materials design based on the critical bonding temperature concept10.1007/s11666-018-0818-8 ↗
4. Comparison of flame sprayed Al2O3/TiO2 coatings: their microstructure, mechanical properties and tribology behavior10.1016/j.surfcoat.2006.02.011 ↗
5. Microstructure and wear resistance of nanostructured Al2O3–8wt.%TiO2 coatings plasma-sprayed with nanopowders10.1016/j.surfcoat.2006.01.052 ↗
6. Mechanical and tribological performance of Al2O3-TiO2 coatings elaborated by flame and plasma spraying10.1016/j.surfcoat.2010.07.061 ↗
7. Substrate and bond coat compositions: factors affecting alumina scale adhesion10.1016/S0921-5093(97)00851-4 ↗
8. Synthesis and oxidation behavior of nanocrystalline MCrAlY bond coatings10.1361/10599630522693 ↗
9. Thermal fatigue behavior of thermal barrier coatings with the MCrAlY bond coats by cold spraying and low-pressure plasma spraying10.1016/j.surfcoat.2010.08.144 ↗
10. Alumina growth behaviour on the surface-modified NiCoCrAl alloy by Pt and Hf at high temperature10.1016/j.apsusc.2019.02.179 ↗
11. Isothermal oxidation behaviour of EB-PVD MCrAlY bond coat10.1016/j.vacuum.2006.03.024 ↗
12. High temperature oxidation behavior of hafnium modified NiAl bond coat in EB-PVD thermal barrier coating system10.1016/j.tsf.2007.07.031 ↗
13. Thermal barrier coatings for turbine airfoils10.1016/0040-6090(85)90215-9 ↗
14. Behavior of air plasma sprayed thermal barrier coatings, subject to intense thermal cycling10.1016/S0257-8972(02)00740-5 ↗
15. Corrosion performance of bi-layer Ni/Cr2C3–NiCr HVAF thermal spray coating10.1016/j.apsusc.2016.02.002 ↗
16. Critical bonding temperature for the splat bonding formation during plasma spraying of ceramic materials10.1016/j.surfcoat.2013.09.010 ↗
17. Influence of composition on molten sulfate-vanadate salt corrosion resistance of lanthanum zirconate coatings10.1016/j.ceramint.2018.09.086 ↗
18. Evaluating the toughness of APS and HVOF-sprayed Al2O3-ZrO2-coatings by in-situ and macroscopic bending10.1016/j.jeurceramsoc.2017.11.056 ↗
19. APS prepared NiCrBSi-YSZ composite coatings for protection against cavitation erosion10.1016/j.jallcom.2017.01.034 ↗
20. Microstructure, mechanical properties and cracking behaviour in a γ′-precipitation strengthened nickel-base superalloy fabricated by electron beam melting10.1016/j.matdes.2018.08.054 ↗
21. Advances on strategies for searching for next generation thermal barrier coating materials10.1016/j.jmst.2018.11.016 ↗
22. The imaging of failure in structural materials by synchrotron radiation X-ray microtomography10.1016/j.engfracmech.2017.07.027 ↗
23. A physically short fatigue crack growth approach based on low cycle fatigue properties10.1016/j.ijfatigue.2017.05.006 ↗
24. ZrO2–SiO2 gradient multilayer oxidation protective coating for SiC coated carbon/carbon composites10.1016/j.surfcoat.2004.02.014 ↗
25. A C/SiC gradient oxidation protective coating for carbon/carbon composites10.1016/j.surfcoat.2006.07.239 ↗
26. Functionally graded materials: a review of fabrication and properties10.1016/j.apmt.2016.10.001 ↗
27. Fracture behaviour of ceramic–metallic glass gradient transition coating10.1016/j.ceramint.2018.12.015 ↗
28. Design of a Ti/TiC/DLC functionally gradient coating based on studies of structural transitions in Ti–C thin films10.1016/S0040-6090(96)09145-6 ↗
29. Evolution of cracks within an Al2O3–40 wt%TiO2/NiCoCrAl gradient coating10.1016/j.ceramint.2018.08.081 ↗
30. Development of gradient thermal barrier coatings and their hot-fatigue behavior10.1016/S0257-8972(00)00695-2 ↗
31. Effects of the metal-ceramic transition region on the mechanical properties and crack propagation behavior of an Al2O3-40wt% TiO2 coating10.1016/j.surfcoat.2017.04.058 ↗
32. Influence of heat treatment on alternant-layer structure and mechanical properties of Al2O3-TiO2-MgO coatings10.1016/j.ceramint.2018.04.214 ↗
33. Properties of single layer and gradient (Ti,Al)N coatings10.1016/S0921-5093(03)00473-8 ↗
34. Functionally graded ZrO2-NiCrAlY coatings prepared by plasma spraying using pre-mixed, spheroidized powders10.1016/S0257-8972(97)00185-0 ↗
35. Microstructure and electrical conductivity of high volume Al2O3-reinforced copper matrix composites produced by plasma spray10.1016/j.surfcoat.2004.02.002 ↗
36. Synthesis of stoichiometric phase pure NiAl2O4 using molten salt method
37. Novel synthesis and characterization of nanosized γ-Al2O3 from kaolin10.1016/j.clay.2009.12.021 ↗
38. Oxidation of simple and Pt-modified aluminide diffusion coatings on Ni-base superalloys—I. Oxide scale microstructure10.1023/A:1024665229656 ↗
39. Nucleation and concurrent anomalous grain growth of α-Al2O3 during γ - α phase transformation10.1111/j.1151-2916.1991.tb08295.x ↗
40. formation of hydroxyapatite on composites in CaO-P2O5-sio2-Al2O3 system by hydrothermal treatment10.2109/jcersj.103.992 ↗
41. Preparation and high temperature oxidation resistance of microarc oxidation ceramic coatings formed on Ti2AlNb alloy10.1016/j.apsusc.2012.05.125 ↗
42. Sintering and microwave dielectric characteristics of MCAS glass-added 0.84Al2O3–0.16TiO2 ceramics10.1016/S0167-577X(02)01402-7 ↗
43. Synthesis and characterization of nano-sized nickel aluminate spinel crystals10.1016/S1452-3981(23)14674-8 ↗
44. Novel nickel catalysts based on spinel-type mixed oxides for methane and propane steam reforming10.1252/jcej.13we305 ↗
45. H.V. Pham, M. Nanko, T.D. Nguyen, D. Van Tran, Surface crack-disappearance via thermal oxidation in alumina-based composites, Compos. Met. Compos. 10 (n.d.) 16.
46. Influence of cryomilling on the morphology and composition of the oxide scales formed on HVOF CoNiCrAlY coatings10.1023/B:OXID.0000025332.26757.41 ↗
47. The oxidation mechanism of θ-Al2O3 scales10.1016/0167-2738(95)00013-V ↗
48. Oxidation behaviour of sputter-deposited Ni–Cr–Al micro-crystalline coatings10.1016/S1359-6454(97)00346-7 ↗
49. Isothermal oxidation behaviour of EB-PVD MCrAlY bond coat10.1016/j.vacuum.2006.03.024 ↗
50. On the microstructure of the initial oxide grown by controlled annealing and oxidation on a NiCoCrAlY bond coating10.1007/s11085-005-8532-6 ↗
51. Wear behaviour of Al2O3 dispersion strengthened MCrAlY coating10.1016/j.surfcoat.2003.10.055 ↗
52. Crack disappearance by high-temperature oxidation of alumina toughened by Ni nano-particles10.4028/www.scientific.net/AMR.68.34 ↗
53. Fabrication and characteristic of Al-based hybrid composite reinforced with tungsten oxide particle and aluminum borate whisker by squeeze casting10.1016/j.matdes.2008.04.006 ↗
54. Short-fiber/particle hybrid reinforcement: effects on fracture toughness and fatigue crack growth of metal matrix composites10.1016/j.compscitech.2006.06.020 ↗
55. Compressive behaviour of Al-based hybrid composites reinforced with SiC whiskers and SiC nanoparticles10.1016/j.matchemphys.2006.04.004 ↗
56. Microstructure and wear mechanisms of thermal-sprayed alumina coatings10.1016/S0167-577X(00)00215-9 ↗
57. Enhanced interface adhesion by in-situ oxidation within metal-ceramic coatings10.1016/j.ceramint.2018.08.332 ↗
58. The imaging of failure in structural materials by synchrotron radiation X-ray microtomography10.1016/j.engfracmech.2017.07.027 ↗