NDLI: Effect of number of coatings on structure , mechanical properties and corrosion behaviour of HA coating on 316 L stainless teel

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Effect of number of coatings on structure , mechanical properties and corrosion behaviour of HA coating on 316 L stainless teel

Content Provider	Semantic Scholar
Author	Narang, Deepak Batra, Uma
Copyright Year	2015
Abstract	In this study, hydroxyapatite coatings were deposit ed on AISI 316L stainless steel using sol–gel dip c oating method. The three coatings were developed by subjecting the substrate to three; four and five times dip in the sol. The surface morphology and elemental analysis of coatin gs were studied using scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) spectroscopy. The por osity in coating was determined using inverted meta llurgical optical microscope (Zeiss Axiovert 200 MAT) fitted with imaging software (Dexel, version 1.3.4). The s urface roughness was determined using surface testing mach ine (Surftest, Mitutoyo, model SJ-400) for a cut-of f of 0.8 mm. The micro hardness test on coated samples was condu ted sing a Vicker’s micro hardness tester (model HV-1000 V, Huayin). The adhesion strength of the coatings w a calculated using Hertz equation. The coating dev eloped by four times dip demonstrated the minimum surface rou ghness; maximum micro hardness and adhesion strengt h. In order to investigate the corrosion behavior of unco ated and hydroxyapatite coated 316L stainless steel , electrochemical potentiodynamic polarization tests were performed in physiological solutions at 37±1 C. The coating developed by exposing substrate for four ti mes dip in sol. offered a better corrosion protecti on of the substrate compared to coatings developed by exposin g for three or five times dip in sol.
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Alternate Webpage(s)	http://www.jocpr.com/articles/effect-of-number-of-coatings-on-structure-mechanical-properties-and-corrosion-behaviour-of-ha-coating-on-316l-stainless.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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