This paper is on various splat shapes obtained using three alumina based powders sprayed on various substrates. The parameters considered were substrate preheating temperature, nozzle diameter, and secondary and primary gas flow rates. The splat shape was found to be strongly dependent on spraying conditions. The substrate preheating temperature determined the degree of substrate wetting by the splat. A change in either nozzle diameter or primary gas flow rate brought about a change in the particle momentum and subsequently, a change in splat shape. The splat shape differed widely on an as – sprayed bond coat as compared to a polished one, owing to splat confinement by surface asperities. Sub-microscale surface roughness of polished substrate surfaces showed an increase with the preheating temperature and this in turn, resulted in better substrate wetting by the splats.

Variation of splat shape with processing conditions in plasma sprayed alumina coatings / Kazi, Sabiruddin; P. P., Bandyopadhyay; Bolelli, Giovanni; Lusvarghi, Luca. - In: JOURNAL OF MATERIALS PROCESSING TECHNOLOGY. - ISSN 0924-0136. - STAMPA. - 211:(2011), pp. 450-462. [10.1016/j.jmatprotec.2010.10.020]

Variation of splat shape with processing conditions in plasma sprayed alumina coatings

BOLELLI, Giovanni;LUSVARGHI, Luca
2011-01-01

Abstract

This paper is on various splat shapes obtained using three alumina based powders sprayed on various substrates. The parameters considered were substrate preheating temperature, nozzle diameter, and secondary and primary gas flow rates. The splat shape was found to be strongly dependent on spraying conditions. The substrate preheating temperature determined the degree of substrate wetting by the splat. A change in either nozzle diameter or primary gas flow rate brought about a change in the particle momentum and subsequently, a change in splat shape. The splat shape differed widely on an as – sprayed bond coat as compared to a polished one, owing to splat confinement by surface asperities. Sub-microscale surface roughness of polished substrate surfaces showed an increase with the preheating temperature and this in turn, resulted in better substrate wetting by the splats.
211
450
462
Variation of splat shape with processing conditions in plasma sprayed alumina coatings / Kazi, Sabiruddin; P. P., Bandyopadhyay; Bolelli, Giovanni; Lusvarghi, Luca. - In: JOURNAL OF MATERIALS PROCESSING TECHNOLOGY. - ISSN 0924-0136. - STAMPA. - 211:(2011), pp. 450-462. [10.1016/j.jmatprotec.2010.10.020]
Kazi, Sabiruddin; P. P., Bandyopadhyay; Bolelli, Giovanni; Lusvarghi, Luca
File in questo prodotto:
File Dimensione Formato  
Variation of splat shape with processing conditions in plasma sprayed alumina coatings.pdf

non disponibili

Tipologia: Versione pubblicata dall'editore
Dimensione 2.52 MB
Formato Adobe PDF
2.52 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/703362
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 32
  • ???jsp.display-item.citation.isi??? 31
social impact