Microstructural evolution and fracture toughness of plasma sprayed CNT reinforced Yttria‐stabilized Hafnia coating
Source abstract
Abstract
Abstract Yttria (8 wt%)‐stabilized hafnia (YSH) and carbon nanotubes (CNTs) (1 wt%) reinforced yttria‐stabilized hafnia (YSHC) coatings were fabricated on alumina substrate using atmospheric plasma spray technique. Raman spectra confirmed the survival of CNTs in plasma sprayed YSHC coating and indicated about graphitization of CNTs. Whereas, the FE‐SEM micrograph infers the presence of few 2‐D graphene platelet‐like structure in plasma sprayed YSHC coating. Addition of 1 wt% CNTs has significantly increased the densification of YSH coating from 86% to 92%, whereas average hardness and elastic modulus increased by ~57% and ~16%, respectively. A phenomenal increase of ~125% in relative fracture toughness was observed in YSHC coating, which is attributed to three major factors viz. (a) Enhanced densification (b) High fraction of fully melted regions and (c) Various toughening mechanisms, like CNTs pull out, CNTs braiding, graphene splat wrapping, CNTs anchoring.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Advanced ceramic materials synthesis · High-Temperature Coating Behaviors · Diamond and Carbon-based Materials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Tata Steel Limited Jamshedpur India
Department of Metallurgical and Materials Engineering Indian Institute of Technology Patna Bihta India
Funding
Indian Space Research Organisation
References (44)
Show source-provided references
1. 10.1016/S1369-7021(05)70934-210.1016/S1369-7021(05)70934-2 ↗
2. 10.1016/S1359-6454(00)00171-310.1016/S1359-6454(00)00171-3 ↗
3. 10.1016/j.matlet.2008.03.05210.1016/j.matlet.2008.03.052 ↗
4. 10.1126/science.106860910.1126/science.1068609 ↗
5. 10.1557/JMR.1999.062810.1557/JMR.1999.0628 ↗
6. ThorntonJMA OhmoriA(Ed.).Thermal spraying — current status and future trends. Proceedings of the 14th International Thermal Spray Conference [C] Kobe Japan. May1995; 1075.
7. 10.1016/j.ceramint.2016.01.14710.1016/j.ceramint.2016.01.147 ↗
8. 10.1016/j.corsci.2014.04.00110.1016/j.corsci.2014.04.001 ↗
9. 10.1111/j.1151-2916.2000.tb01506.x10.1111/j.1151-2916.2000.tb01506.x ↗
10. 10.1016/j.jeurceramsoc.2009.09.01010.1016/j.jeurceramsoc.2009.09.010 ↗
11. 10.1016/j.scriptamat.2005.12.04310.1016/j.scriptamat.2005.12.043 ↗
12. 10.1016/S1468-6996(03)00009-310.1016/S1468-6996(03)00009-3 ↗
13. Pawlowski L · 1995
14. 10.1111/j.1151-2916.1997.tb03093.x10.1111/j.1151-2916.1997.tb03093.x ↗
15. 10.1021/am201259610.1021/am2012596 ↗
16. 1996 Stern Chapman & Hall London RL Jones H Kurt Chapter 8: thermal barrier coatings 194 235
17. Bose S · 2007 · 1
18. 10.1038/nmat306410.1038/nmat3064 ↗
19. 10.1016/j.compositesb.2017.05.03210.1016/j.compositesb.2017.05.032 ↗
20. PerssonK.Materials Data on Y2O3(SG:206) by Materials Project.2014;1.https://doi/10.17188/1201184
21. https://materialsproject.org/materials/mp-2652/(accessed on 31 December 2018).
22. 10.1088/0957-4484/19/31/31570810.1088/0957-4484/19/31/315708 ↗
23. A critical evaluation of indentation techniques for measuring fracture toughness: I direct crack measurements
24. 10.1016/j.surfcoat.2010.07.00710.1016/j.surfcoat.2010.07.007 ↗
25. 10.1007/s11666-011-9669-210.1007/s11666-011-9669-2 ↗
26. 10.1002/smll.20080098810.1002/smll.200800988 ↗
27. 10.1103/PhysRevB.73.11533010.1103/PhysRevB.73.115330 ↗
28. 10.1023/B:JCEL.0000029456.26051.2210.1023/B:JCEL.0000029456.26051.22 ↗
29. 10.1007/s11666-997-0066-910.1007/s11666-997-0066-9 ↗
30. 10.1021/nl904286r10.1021/nl904286r ↗
31. 10.1039/C6CP04657F10.1039/C6CP04657F ↗
32. 10.1016/j.scriptamat.2012.10.04310.1016/j.scriptamat.2012.10.043 ↗
33. 10.1016/j.carbon.2011.05.06010.1016/j.carbon.2011.05.060 ↗
34. 10.1016/j.msea.2006.04.08510.1016/j.msea.2006.04.085 ↗
35. 10.3390/electronics404110910.3390/electronics4041109 ↗
36. 10.1016/j.ceramint.2013.04.06810.1016/j.ceramint.2013.04.068 ↗
37. White MA · 2012 · 386
38. 10.1016/j.ijsolstr.2008.10.03210.1016/j.ijsolstr.2008.10.032 ↗
39. Toughening of non‐transformable t′‐YSZ by addition of titania10.1111/j.1551-2916.2007.01990.x ↗
40. 10.1088/0957-4484/19/16/16570110.1088/0957-4484/19/16/165701 ↗
41. 10.1021/nn102529n10.1021/nn102529n ↗
42. 10.1007/s11665-015-1738-010.1007/s11665-015-1738-0 ↗
43. 10.1016/j.actamat.2007.10.03810.1016/j.actamat.2007.10.038 ↗
44. 10.1016/j.ceramint.2009.02.02510.1016/j.ceramint.2009.02.025 ↗