Oxidation and interfacial fracture behaviour of NiCrAlY/Al2O3 coatings on an orthorhombic-Ti2AlNb alloy
Source abstract
Abstract
Al2O3 diffusion barriers of various thicknesses have been fabricated by filtered arc ion plating between the NiCrAlY coating and the O-Ti2AlNb alloy. Isothermal oxidation tests and three-point bend tests have been conducted to investigate the influence of the Al2O3 diffusion barriers on the oxidation and interfacial fracture behaviour of the coatings. The results indicate that the Al2O3 diffusion barrier defers interdiffusion and gives oxidation resistance of the NiCrAlY coatings. The thickness of the Al2O3 interlayer not only influences the oxidation behaviour but also affects the interfacial fracture properties. Additionally, thermal exposure affects the critical load in three-point bend tests.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: High-Temperature Coating Behaviors · Intermetallics and Advanced Alloy Properties · Metal and Thin Film Mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (28)
Show source-provided references
1. Review of alloy and process development of TiAl alloys10.1016/j.intermet.2005.10.019 ↗
2. Intermetallic alloys based on orthorhombic titanium aluminide10.1002/1527-2648(200111)3:11<851::AID-ADEM851>3.0.CO;2-G ↗
3. Evolution of crystallographic texture and microstructure in the orthorhombic phase of a two-phase alloy Ti–22Al–25Nb10.1016/j.intermet.2009.02.002 ↗
4. Oxidation of orthorhombic Ti2AlNb alloys in the temperature range 500–1000°C in air10.3184/096034003782750231 ↗
5. Environmental effects on orthorhombic alloy Ti–22Al–25Nb in air between 650 and 1000°C10.1023/A:1018816300624 ↗
6. Oxidation of orthorhombic Ti2AlNb alloys at 800°C in air10.1002/(SICI)1521-4176(200005)51:5<317::AID-MACO317>3.0.CO;2-W ↗
7. High temperature corrosion behaviour of a gradient NiCoCrAlYSi coating II: oxidation and hot corrosion10.1016/j.corsci.2010.03.032 ↗
8. Prevention of metal dusting on Ni-based alloys by MCrAlY coatings10.1016/j.corsci.2007.04.002 ↗
9. High temperature coatings for gas turbine blades: a review10.1016/0257-8972(89)90099-6 ↗
10. Corrosion behaviour of AIP NiCoCrAlYSiB coating in salt spray tests10.1016/j.corsci.2007.09.004 ↗
11. Progress in coatings for gas turbine airfoils10.1016/S0257-8972(98)00667-7 ↗
12. Oxidation behaviour of thermal barrier coating coatings with HVOF and detonation-sprayed NiCrAlY bondcoats10.1016/j.corsci.2008.02.002 ↗
13. The effects of several coatings on cyclic oxidation resistance of TiAl intermetallics10.1016/S0257-8972(98)00645-8 ↗
14. Protective coatings on orthorhombic Ti2AlNb alloys10.3184/096034005782743994 ↗
15. Diffusion barrier coating with active bonding, designed for gas turbine blades10.1016/0257-8972(94)90132-5 ↗
16. NiCoCrAlY coatings with and without and Al2O3/Al interlayer on an orthorhombic Ti2AlNb-based alloy: oxidation and interdiffusion behaviours10.1016/j.actamat.2006.09.044 ↗
17. Ion-plated Al–Al2O3 films as diffusion barriers between NiCrAlY coating and orthorhombic-Ti2AlNb alloy10.1016/j.corsci.2010.02.002 ↗
18. Adhesion strength of Ni film on Ti substrate characterized by three-point bend test, peel test and theoretic calculation10.1016/j.msea.2005.12.024 ↗
19. Interfacial fracture behaviour of a thermal barrier coating system under four-point bend loading10.1016/j.msea.2007.01.166 ↗
20. Influence of plasma spray parameters on mechanical properties of yttia stabilized zirconia coatings. I: Four point bend test10.1016/S0921-5093(00)00799-1 ↗
21. Damage behaviour of the NiCrAlY coating systems with or without barrier layer during three-point bending10.1016/j.msea.2009.01.032 ↗
22. The determination of the delamination resistance in thermal barrier coating system by four-point bending testing10.1016/j.surfcoat.2005.12.023 ↗
23. A review: constitution of the Al–Cr–Ni system10.1016/0025-5416(84)90140-X ↗
24. Oxidation behavior of the alloy IC-6 and protective coatings10.1016/S0010-938X(03)00184-7 ↗
25. Development of oxidation resistant coatings for γ-TiAl based alloys10.1016/S0921-5093(01)01734-8 ↗
26. The fracture resistance of metal–ceramic interface10.1016/0956-7151(92)90289-Q ↗
27. Plasma-sprayed coatings for titanium alloy oxidation protection10.1016/0257-8972(93)90014-F ↗
28. Samsonov · 1982