A comparative study on slurry erosion behavior of HVOF sprayed coatings
In actual work, slurry erosion behavior of three different HVOF sprayed cermet coatings has been studied. The coatings were developed using the powders feedstock having WC fine structured sizes, Cr3C2-NiCr 75-25 and NiCrWSiFeB, latter conventional grain sizes. The slurry erosion testing was performe...
- Autores:
-
Reyes-Mojena, Miguel Ángel
Sánchez-Orozco, Mario
Carvajal-Fals, Hipólito
Sagaro Zamora, Roberto
Camello-Lima, Carlos Roberto
- Tipo de recurso:
- Article of journal
- Fecha de publicación:
- 2017
- Institución:
- Universidad Nacional de Colombia
- Repositorio:
- Universidad Nacional de Colombia
- Idioma:
- spa
- OAI Identifier:
- oai:repositorio.unal.edu.co:unal/60344
- Acceso en línea:
- https://repositorio.unal.edu.co/handle/unal/60344
http://bdigital.unal.edu.co/58676/
- Palabra clave:
- 62 Ingeniería y operaciones afines / Engineering
slurry erosion
nanostructured coatings
HVOF, thermal spray coatings
desgaste en mezcla erosiva
recubrimientos nanoestructurados
HVOF
recubrimientos por proyección térmica
- Rights
- openAccess
- License
- Atribución-NoComercial 4.0 Internacional
Summary: | In actual work, slurry erosion behavior of three different HVOF sprayed cermet coatings has been studied. The coatings were developed using the powders feedstock having WC fine structured sizes, Cr3C2-NiCr 75-25 and NiCrWSiFeB, latter conventional grain sizes. The slurry erosion testing was performed using a laboratory made pot-type slurry erosion tester, at an impact velocity of 3.61m/s and 9.33 m/s and impact angle of 30 and 90º. The mechanism of material removal in slurry erosion was studied and discussed on microstructural investigations and mechanical properties under the erosion conditions. It was observed that the WC-CoCr cermet coating with fine WC grain exhibits higher erosion resistance as compared to conventional cermet coating due to its improved properties like low porosity, high micro-hardness and fracture toughness. |
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