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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Avalia??o de heterociclo do tipo mesoi?nico solubilizado em sistema microemulsionado para aplica??o em dutos

Cunha, Jardel Dantas da 12 December 2008 (has links)
Made available in DSpace on 2014-12-17T14:06:50Z (GMT). No. of bitstreams: 1 JardelDC.pdf: 1397479 bytes, checksum: 2531cba524c2892d6a86b846e33aa27a (MD5) Previous issue date: 2008-12-12 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / The efficiency of inhibition to corrosion of steel AISI 1018 of surfactant coconut oil saponified (SCO) and heterocyclic type mesoionics (1,3,4-triaz?lio-2-tiolato) in systems microemulsionados (SCO-ME and SCO-ME-MI) Of type O/A (rich in water emulsion) region with the work of Winsor IV. The systems microemulsionados (SCO-ME and SCO-ME-MI) were evaluated with a corrosion inhibitor for use in saline 10,000 ppm of chloride enriched with carbon dioxide (CO2). The assessment of corrosion inhibitors were evaluated by the techniques of linear polarization resistance (LPR) and loss of weight (MW) in a cell instrumented given the gravity and electrochemical devices. The systems were shooting speed of less than 60 minutes and efficiency of inhibition [SCO-ME (91.25%) and SCO-ME-MI (98.54%)] / As efici?ncias de inibi??o ? corros?o em a?o AISI 1018 do tensoativo ?leo de coco saponificado microemulsionado (OCS-ME) e do composto heterociclo do tipo mesoionico (MI) solubilizado neste sistema OCS-ME, foram avaliadas pelas t?cnicas de resist?ncia a polariza??o linear (LPR) e perda de massa (PM) em uma c?lula instrumentada dotada destes dispositivos. O sistema microemulsionado OCS-ME ? do tipo O/A (emuls?o rica em ?gua) apresentando regi?o de trabalho em winsor IV. Os sistemas microemulsionados OCS-ME e OCS-ME-MI foram avaliados como inibidores de corros?o para aplica??o em solu??o salina 10.000 ppm de cloreto, enriquecidos com di?xido de carbono (CO2). Estes sistemas apresentam velocidades de filmagem inferiores a 60 minutos e efici?ncias de inibi??o a corros?o significativas [OCS-ME (91,25 %) e OCS-ME-MI (98,54 %)]

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