Banca de DEFESA: JUSSARA CÂMARA CARDOZO
Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.DISCENTE : JUSSARA CÂMARA CARDOZO
DATA : 26/07/2016
HORA: 16:00
LOCAL: Auditório do NUPPRAR
TÍTULO:
Use of Ipomoea pes-caprae (L.) Br., Convolvulaceae in microemulsion system in inhibition corrosion of carbon steel
PALAVRAS-CHAVES:
Ipomoea pes-caprae, inhibitor, corrosion, microemulsion system
PÁGINAS: 100
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Química
SUBÁREA: Físico-Química
ESPECIALIDADE: Eletroquímica
RESUMO:
Problems arising from the corrosive action directly reflect on the financial sector of industries, on the environment and safety and this increases the necessity to combat this problem as effectively as possible. To reduce the corrosive process one of the most used methods is the use of inhibitors, chemical compounds that in appropriate concentration form a protective film increasing corrosion resistance of the material. Bind the inhibition efficiency of natural products that minimize environmental impacts is extreme important. In this context, this study uses fractions extracted from Ipomoea pes-caprae L. Br. Convolvulaceae incorporated or not to microemulsion system (SME, SME-T and SME-TS) as corrosion inhibitors for carbon steel AISI 1018 and under the influence of the corrosive media of 3.5% NaCl. The corrosion inhibition efficiency was determined by electrochemical measurements from the corrosion currents found by Tafel extrapolation. The study of the influence of scan rate during the electrochemical tests show that at low scanning speeds it has better inhibition efficiency results. The inhibitors showed to be efficient even at low concentrations. The experimental data set to the model of Langmuir isotherm, indicating that the adsorption of the surfactants occurs in monolayers.
MEMBROS DA BANCA:
Interno - 1645110 - CARLOS ALBERTO MARTINEZ HUITLE
Externo à Instituição - CÁTIA GUARACIARA FERNANDES TEIXEIRA ROSSI - FANEC
Presidente - 348475 - DJALMA RIBEIRO DA SILVA
Externo à Instituição - LEONARDO ANDRES CANO - UNLP