Microstructure and Cavitation Erosion Resistance of HVOF Deposited WC-Co Coatings with Different Sized WC
Source abstract
Abstract
Conventional, multimodal and nanostructured WC-12Co coatings with different WC sizes and distributions were prepared by high velocity oxy-fuel spray (HVOF). The micrographs and structures of the coatings were analyzed by scanning electron microscope (SEM), X-ray diffractometer (XRD) et al. The porosity, microhardness and fracture toughness of the WC-Co coatings were measured. The coating resistance to cavitation erosion (CE) was investigated by ultrasonic vibration cavitation equipment and the cavitation mechanisms were explored. Results show that there is serious WC decarburization in nanostructured and multimodal WC-Co coatings with the formation of W2C and W phases. The nanostructured WC-Co coating has the densest microstructure with lowest porosity compared to the other two WC-Co coatings, as well as the highest fracture toughness among the three coatings. It was also discovered that the nanostructured WC-Co coating exhibits the best CE resistance and that the CE rate is approximately one-third in comparison with conventional coating.
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Research context
OpenAlex topics: Advanced materials and composites · High-Temperature Coating Behaviors · Metal and Thin Film Mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Advanced Technology for Materials and Processing, Wuhan University of Technology, Wuhan 430070, China
School of Energy and Power Engineering, Wuhan University of Technology, Wuhan 430063, China
Funding
National Natural Science Foundation of China
References (33)
Show source-provided references
1. Cavitation erosion in hydraulic turbine components and mitigation by coatings: Current status and future needs10.1007/s11665-011-0051-9 ↗
2. Cavitation erosion resistance of alloys used in cathodic protection of hulls of ships10.2478/amm-2014-0039 ↗
3. Development and properties of nanostructured thermal spray coatings10.1016/j.cap.2005.07.006 ↗
4. Abrasive wear behavior of conventional and large-particle tungsten carbide-based cermet coatings as a function of abrasive size and type10.1016/j.wear.2010.12.060 ↗
5. Sliding and rolling wear behavior of HVOF-sprayed coatings derived from conventional, fine and nanostructured WC-12Co powders10.1007/s11666-013-0038-1 ↗
6. Cold spraying of Cu-Al-Bronze for cavitation protection in marine environments
7. Cavitation erosion of plasma-sprayed CoMoCrSi coatings10.1016/j.triboint.2016.06.014 ↗
8. Improvement on mechanical properties and wear resistance of HVOF sprayed WC-12Co coatings by optimizing feedstock structure10.1016/j.apsusc.2014.09.081 ↗
9. The enhancement of the properties of WC-Co HVOF coatings through the use of nanostructured and microstructured feedstock powders10.1016/j.surfcoat.2006.01.041 ↗
10. A comparative study on the microstructure and surface property evaluation of coatings produced from nanostructured and conventional WC-Co powders HVOF-sprayed on Al707510.1016/j.surfcoat.2015.06.017 ↗
11. Abrasive wear behavior of detonation sprayed WC-12Co coatings: Influence of decarburization and abrasive characteristics10.1016/j.wear.2010.02.013 ↗
12. A study on HVOF coatings of micron and nano WC-Co powders10.1016/j.surfcoat.2008.06.106 ↗
13. Effect of carbide grain size on microstructure and sliding wear behavior of HVOF-sprayed WC-12%Co coatings10.1016/S0043-1648(02)00294-6 ↗
14. Near-nanostructured WC-18 pct Co coatings with low amounts of non-WC carbide phase: Part I. synthesis and characterization10.1007/s11661-002-0013-9 ↗
15. Characterization of cold-sprayed multimodal WC-12Co coating10.1016/j.surfcoat.2013.08.021 ↗
16. The parameters optimization and abrasion wear mechanism of liquid fuel HVOF sprayed bimodal WC-12Co coating10.1016/j.surfcoat.2011.09.071 ↗
17. Resistance of cavitation erosion of multimodal WC-12Co coatings sprayed by HVOF10.1016/S1003-6326(11)61000-5 ↗
18. Influence of WC size and HVOF process on erosion wear performance of WC-10Co4Cr coatings10.1007/s00170-017-0795-y ↗
19. Hu, Y.M. (2015). Structure and Resistance of Cavitation Erosion Micro-Nano WC-Based Coatings Sprayed by HVOF. [Master’s Thesis, Wuhan University of Technology]. (In Chinese).
20. Behavior of HVOF WC-10Co4Cr coatings with different carbide size in fine and coarse particle abrasion10.1007/s11666-009-9433-z ↗
21. Microstructure characterization and abrasive wear performance of HVOF sprayed WC-Co coatings
22. Synergistic effect of ultrasonic cavitation erosion and corrosion of WC-CoCr and FeCrSiBMn coatings prepared by HVOF spraying10.1016/j.ultsonch.2016.02.011 ↗
23. Cavitation and sand slurry erosion resistances of WC-10Co-4Cr coatings10.1007/s11665-015-1496-z ↗
24. Effects of the dispersion time on the microstructure and wear resistance of WC/Co-CNTs HVOF sprayed coatings10.1016/j.surfcoat.2014.10.014 ↗
25. Microstructure and performance of multi-dimensional WC-CoCr coating sprayed by HVOF10.1007/s00170-017-0837-5 ↗
26. Cavitation erosion behavior and mechanism of HVOF sprayed WC-10Co-4Cr coating in 3.5 wt.% NaCl solution10.1007/s12666-014-0440-5 ↗
27. Comparative study of the friction and wear behavior of plasma sprayed conventional and nanostructured WC-12%Co coatings on stainless steel10.1016/j.msea.2006.06.009 ↗
28. Microstructure and properties of cold sprayed multimodal WC-17Co deposits10.1016/j.ijrmhm.2014.04.018 ↗
29. Structure of micro-nano WC-10Co4Cr coating and cavitation erosion resistance in NaCl solution10.1007/s10033-017-0162-9 ↗
30. Structure and cavitation erosion behavior of HVOF sprayed multi-dimensional WC-10Co4Cr coating10.1016/S1003-6326(18)64681-3 ↗
31. Microstructural characterization of HVOF/plasma thermal spray of micro/nano WC-12%Co powders10.1016/j.surfcoat.2014.12.050 ↗
32. HVOF sprayed WC-Co coatings: Microstructure, mechanical properties and friction moment prediction10.1016/j.matdes.2009.08.037 ↗
33. (2009). GB/T 6383-2009 The Method of Vibration Cavitation Erosion Test, Standards Administration of China.