Artículo
Effect of crystal size on the tribological behavior of manganese phosphate coatings under lubricated sliding
Fochesatto, Nicolás Sebastián
; Müller, Camila
; Zabala, Nicolás Ariel
; Castro, Pablo A.; Tuckart, Walter Roberto
Fecha de publicación:
21/10/2018
Editorial:
Professional Engineering Publishing Ltd
Revista:
Proceedings of the Institution of Mechanical Engineers Part J: Journal of Engineering Tribology
ISSN:
1350-6501
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
In this study, the wear and friction behavior of manganese phosphate coatings with different crystal sizes were investigated. Crystal size was controlled modifying the chemical composition of the phosphating bath, particularly the concentration of the activator which modifies the number of nuclei for crystal growth. Activator concentration range used for this work varied from 0 to 0.7 g/L, and crystal size was measured using image analysis software on scanning electron microscopy photographs. Available volume for lubricant retention was determined measuring the phosphated surface with a 3D optical profilometer. At the same time, lubricated wear tests were carried out using a ring-on-block configuration at low speeds (23 mm/s) and high loads (14,500 N). Wear behavior was determined as the sliding distance to failure, which was noticed through signs of removal of the phosphate along with the increase of coefficient of friction. It was found that there is a competition between the availability of volume to hold the lubricant, which increases with the crystal size, and the surface coverage, which diminishes as the crystal size grows. Optimal results were obtained for an activator concentration of 0.3 g/L, which meant an average crystal size of 16 µm.
Palabras clave:
CRYSTAL SIZE
,
GALLING
,
MANGANESE PHOSPHATE COATINGS
,
RING ON BLOCK
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CCT - BAHIA BLANCA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - BAHIA BLANCA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - BAHIA BLANCA
Articulos(PLAPIQUI)
Articulos de PLANTA PILOTO DE INGENIERIA QUIMICA (I)
Articulos de PLANTA PILOTO DE INGENIERIA QUIMICA (I)
Citación
Fochesatto, Nicolás Sebastián; Müller, Camila; Zabala, Nicolás Ariel; Castro, Pablo A.; Tuckart, Walter Roberto; Effect of crystal size on the tribological behavior of manganese phosphate coatings under lubricated sliding; Professional Engineering Publishing Ltd; Proceedings of the Institution of Mechanical Engineers Part J: Journal of Engineering Tribology; 232; 10; 21-10-2018; 1285-1292
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