Determination of Wetting Behavior, Spread Activation Energy, and Quench Severity of Bioquenchants

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dc.contributor.authorNarayan Prabhu, K.
dc.contributor.authorPeter Fernandes
dc.date.accessioned2014-04-26T04:31:59Z
dc.date.available2014-04-26T04:31:59Z
dc.date.issued2007
dc.description.abstractAn investigation was conducted to study the suitability of vegetable oils such as sunflower, coconut, groundnut, castor, cashewnut shell (CNS), and palm oils as quench media (bioquenchants) for industrial heat treatment by assessing their wetting behavior and severity of quenching. The relaxation of contact angle was sharp during the initial stages, and it became gradual as the system approached equilibrium. The equilibrium contact angle decreased with increase in the temperature of the substrate and decrease in the viscosity of the quench medium. A comparison of the relaxation of the contact angle at various temperatures indicated the significant difference in spreading of oils having varying viscosity. The spread activation energy was determined using the Arrhenius type of equation. Oils with higher viscosity resulted in lower cooling rates. The quench severity of various oil media was determined by estimating heattransfer coefficients using the lumped capacitance method. Activation energy for spreading determined using the wetting behavior of oils at various temperatures was in good agreement with the severity of quenching assessed by cooling curve analysis. A high quench severity is associated with oils having low spread activation energy.en_US
dc.identifier.citationMETALLURGICAL AND MATERIALS TRANSACTIONS VOLUME 38B, AUGUST 2007—631en_US
dc.identifier.urihttp://hdl.handle.net/123456789/588
dc.language.isoenen_US
dc.titleDetermination of Wetting Behavior, Spread Activation Energy, and Quench Severity of Bioquenchantsen_US
dc.typeArticleen_US

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