Microstructural, mechanical and thermal characteristics of zirconia-based thermal barrier coatings deposited by plasma spraying
Source abstract
Abstract
Abstract Ceramic thermal barrier coatings (TBCs) are potential tools to increase the durability of metal parts operating in turbine engines. In this work, partially yttria stabilized zirconia (YSZ) and lanthanum zirconate (LZ) coatings were deposited by plasma spraying on stainless steel substrates. X-Ray Diffraction (XRD) analysis revealed that plasma spraying promoted the formation of metastable phases in both the cases. Both YSZ and LZ coatings exhibited porous microstructure with a network of embedded pores and microcracks, that resulted in similar porosity values. The average microhardness of LZ coating was about 92% of that of YSZ one (5.4 against 5.9 GPa), whereas the thermal expansion coefficient (CTE) of LZ coating was about 86% of that of YSZ one. Based on the results herein discussed the development of multilayered microstructures represents a promising solution in order to develop TBCs with enhanced performance.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: High-Temperature Coating Behaviors · Nuclear Materials and Properties · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (41)
Show source-provided references
1. Hot corrosion in gas turbine components10.1016/S1350-6307(00)00035-2 ↗
2. High temperature oxidation and corrosion of gas turbine materials in burner rig exposures10.1179/1743284712Y.0000000097 ↗
3. Degradation of free-standing air plasma sprayed CoNiCrAlY coatings by vanadium and phosphorus pentoxides10.1016/j.surfcoat.2008.08.068 ↗
4. Thermal barrier coatings technology: critical review, progress update, remaining challenges and prospects10.1179/1743280413Y.0000000019 ↗
5. Materials design for the next generation thermal barrier coatings10.1146/annurev.matsci.33.011403.113718 ↗
6. Yttria-stabilized zirconia thermal barrier coatings – a review10.1142/S0218625X06008670 ↗
7. Sintering characteristics of plasma sprayed zirconia coatings containing different stabilisers10.1016/j.surfcoat.2008.09.037 ↗
8. Phase evolution and thermophysical properties of plasma sprayed thick zirconia coatings10.1016/j.ceramint.2010.07.035 ↗
9. Zirconates as new materials for thermal barrier coatings10.1111/j.1151-2916.2000.tb01506.x ↗
10. Thermophysical properties of lanthanum zirconate coating prepared by plasma spraying and the influence of post-annealing10.1016/j.jallcom.2009.06.162 ↗
11. Thermal conductivity of plasma sprayed Sm2Zr2O7 coating10.1016/j.jeurceramsoc.2009.09.010 ↗
12. Atmospheric plasma spraying of high melting temperature complex perovskites for TBC application10.1007/s11666-009-9377-3 ↗
13. Lanthanum hexaaluminate – novel thermal barrier coatings for gas turbine applications – materials and process development10.1016/S0257-8972(01)01642-5 ↗
14. Mechanisms controlling the durability of thermal barrier coatings10.1016/S0079-6425(00)00020-7 ↗
15. Ceramic materials for thermal barrier coatings10.1016/S0955-2219(03)00129-8 ↗
16. Low-thermal conductivity rare-earth zirconates for potential thermal-barrier-coating applications10.1111/j.1151-2916.2002.tb00574.x ↗
17. Evolution of microstructural and mechanical properties of lanthanum zirconate thermal barrier coatings at high temperature10.1016/j.surfcoat.2014.07.067 ↗
18. High-temperature oxidation and oxide scale formation in plasma-sprayed CoNiCrAlYRe coatings10.1007/s11661-014-2509-5 ↗
19. The influence of high temperature sintering on microstructure and mechanical properties of APS CeO2–Y2O3–ZrO2 coatings10.1007/s10853-010-4245-6 ↗
20. M.J. Maloney, Thermal Barrier Coating Systems and Materials, U.S. Patent 6,117,560, 2000.
21. Improving atmospheric plasma spraying of zirconate thermal barrier coatings based on particle diagnostics10.1007/s11666-011-9706-1 ↗
22. R. Subramanian, Thermal Barrier Coating Having High Phase Stability, U.S. Patent No. 6,258,467, 2001.
23. Microstructural non-uniformity and mechanical property of air plasma-sprayed dense lanthanum zirconate thermal barrier coating10.1016/j.matpr.2014.09.003 ↗
24. Preparation and thermophysical properties of CeO2 doped La2Zr2O7 ceramic for thermal barrier coatings10.1016/j.jallcom.2006.08.005 ↗
25. Perovskite-type strontium zirconate as a new material for thermal barrier coatings10.1111/j.1551-2916.2008.02472.x ↗
26. Anisotropic thermal expansion effects in plasma-sprayed ZrO2-8%-Y2O3 coatings10.1002/9780470320167.ch9 ↗
27. G. Di Girolamo, Unpublished data, 2010.
28. New thermal barrier coatings based on pyrochlore/YSZ double-layer systems10.1111/j.1744-7402.2004.tb00186.x ↗
29. Microstructure behaviour and influence on thermally grown oxide formation of double-ceramic-layer EB-PVD thermal barrier coatings annealed at 1300°C under ambient isothermal conditions10.1002/mawe.201400248 ↗
30. Improvement of new thermal barrier coating systems using a layered or graded structure10.1002/9780470294703.ch52 ↗
31. Hot corrosion of lanthanum zirconate and partially stabilized zirconia thermal barrier coatings10.1115/1.1924534 ↗
32. Structure and thermal properties of plasma sprayed ceria-yttria co-stabilized zirconia coatings10.1016/j.ceramint.2009.10.020 ↗
33. G.E. Witz, Multilayer Thermal Barrier Coating, EP 2 128, 299 A1, 2009.
34. Thermal and mechanical properties of nano-YSZ–Alumina functionally graded coatings deposited by nano-agglomerated powder plasma spraying10.1016/j.ceramint.2014.05.068 ↗
35. Thermal barrier coatings obtained by detonation spraying10.1016/S0257-8972(02)00783-1 ↗
36. Improvement of thermally grown oxide layer in thermal barrier coating systems with alumina as third layer10.1016/S1003-6326(13)62600-X ↗
37. The effect of an additional alumina layer in improvement of plasma sprayed TBCs during high temperature exposure
38. Formation of a dense and continuous Al2O3 layer in nano-thermal barrier coating systems for the suppression of spinel growth on the Al2O3 oxide scale during oxidation10.1016/j.jallcom.2013.03.168 ↗
39. Influence of the thermal barrier coatings design on the oxidation behavior
40. A comparative study on hot corrosion resistance of three types of thermal barrier coatings: YSZ, YSZ+Al2O3 and YSZ/Al2O310.1016/j.msea.2007.06.001 ↗
41. A study of the microstructure and oxidation behavior of alumina/yttria-stabilized zirconia (Al2O3/YSZ) thermal barrier coatings10.1016/j.surfcoat.2012.09.052 ↗