Degradation of automotive materials upon exposure to sunflower biodiesel

Cursaru, Diana; Branoiu, Gheorghe; Ramadan, Ibrahim; Miculescu, Florin

doi:10.1016/j.indcrop.2014.01.032

Cited by 63 publications

(51 citation statements)

References 15 publications

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“…However, the maximum acceptable moisture content for fuel grade ethanol as stated by ASTM E203 is 1%. In summary, the percentage of water content obtained in the present study is lower than previous studies reported for B100 [5][6][7][8][9]. As in Fig.…”

Section: Water Contentcontrasting

confidence: 70%

“…According to Baena et al [7], the fuel containing ethanol is more susceptible corrosion when exposed to ferrous material, which is due to occurrence of water and oxygen in the ethanol; moreover, no passivation exists in carbon steel, and corrosion products are not protective at low temperature atmosphere. The CR of carbon steel obtained in the present study at 60°C is less than Cursaru et al [6] and Hu et al [5], whereas, Fazal et al [8] obtained only 0.059 mpy at 80°C for 1200 h in palm biodiesel. This is due to the investigated carbon steel in that study contained 0.2% C, 0.5% Mn, 0.5% Si and 98.8% Fe in composition, whereas the carbon steel used in the present study contains only 0.2% C, 0.4% Mn and 99.4% Fe.…”

Section: Corrosion Ratecontrasting

confidence: 69%

“…The mean of weight loss measured from triplicate test specimens was converted into corrosion rate using Eq. (1) [4][5][6][7][8][9].…”

Section: Materials and Methodologymentioning

confidence: 99%

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Corrosion Behaviour of Carbon Steel in Biodiesel–Diesel–Ethanol (BDE) Fuel Blend

Thangavelu

Chelladorai

Ani

2015

MATEC Web of Conferences

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Abstract. The biodiesel-diesel-ethanol blend represents an important alternative fuel for diesel engines; however, changes in the fuel composition and the introduction of new alternative fuel often results in corrosion and degradation of the automobile fuel system parts. In this present study, the corrosion behavior of carbon steel in B20D70E10 (biodiesel 20%, diesel 70% and ethanol 10%) fuel blend was studied by static immersion at room temperature and 60 °C. The effect of B20D70E10 fuel blend on corrosion rate, morphology of corrosion products, and chemical structure of carbon steel were studied. In addition, the change of fuel properties, namely, total acid number, density, viscosity, calorific value, flash point, and color changes were also investigated. Moreover, fuel compositional changes, such as water content and oxidation product level in the fuel blends were examined. The results showed that the degradation of fuel properties and corrosion rate of carbon steel in B20D70E10 are lower than neat biodiesel (B100), whereas slightly higher than petro-diesel (B0) .

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Section: Water Contentcontrasting

confidence: 70%

Section: Corrosion Ratecontrasting

confidence: 69%

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Corrosion Behaviour of Carbon Steel in Biodiesel–Diesel–Ethanol (BDE) Fuel Blend

Thangavelu

Chelladorai

Ani

2015

MATEC Web of Conferences

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“…Number of studies that dogged on corrosion behavior relative to biodiesel have been found in the literatures to date [14][15][16][17][18]. Other example, corrosion of copper in blended tri-fuel category [19] has also been found reported.…”

Section: Introductionmentioning

confidence: 99%

Tri-fuel (diesel-biodiesel-ethanol) emulsion characterization, stability and the corrosion effect

Low

Mukhtar

Hagos

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. This paper presents the result of experimenting emulsified tri-fuel in term of stability, physico-chemical properties and corrosion effect on three common metals. The results were interpreted in terms of the impact of five minutes emulsification approach. Tri-fuel emulsions were varied in proportion ratio consist of biodiesel; 0%, 5%, 10%, and ethanol; 5%, 10%, 15%. Fuel characterization includes density, calorific value, flash point, and kinematic viscosity. Flash point of tri-fuel emulsion came with range catalog. Calorific value of tri-fuel emulsion appeared in declining pattern as more ethanol and biodiesel were added. Biodiesel promoted flow resistance while ethanol with opposite effect. 15% ethanol content in tri-fuel emulsion separated faster than 10% ethanol content but ethanol content with 5% yield no phase separation at all. Close cap under static immersion with various ratio of tri-fuel emulsions for over a month, corrosiveness attack was detected via weight loss technique on aluminum, stainless steel and mild steel.

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“…CURSARU et al [11] evaluaron el comportamiento frente a la corrosión del aluminio, y el acero al carbono templado expuestos a biodiesel de girasol. Concluyeron que el biodiesel fue más corrosivo que el diesel de petróleo, siendo el cobre el material más susceptible a la corrosión.…”

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Resistencia a la corrosión de aleaciones Al-Cu en biodiesel

et al. 2018

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RESUMENEn el presente trabajo se evalúa la susceptibilidad frente a la corrosión en biodiesel de aleaciones Al-Cu solidificadas direccionalmente: Al-4,5%Cu y Al-15%Cu (porcentajes en peso), en función al tipo de estructura (columnar, equiaxial o con transición de estructura columnar a equiaxial-TCE) y a la composición química. Se prepararon electrodos de trabajo con los diferentes tipos de estructura y se realizaron estudios electroquímicos de los mismos. Se utilizó biodiesel industrial fabricado a partir de aceite de soja. Debido a su alta resistividad, para la realización de los ensayos electroquímicos, se realizó una extracción acuosa del biodiesel, con el objetivo de obtener la fracción iónica acuosa, que genera el proceso de corrosión. Se llevaron a cabo curvas de polarización potenciodinámica y medidas de espectroscopia de impedancia electroquímica (EIE). Estos estudios se complementaron con observaciones de las probetas mediante microscopia óptica (MO). El análisis de las curvas de polarización potenciodinámicas permite concluir que el efecto de las diferentes estructuras de granos se evidencia sobre el potencial de picado, solamente en la aleación Al-4,5%Cu. Los espectros de impedancia de todas las probetas muestran una doble contribución capacitiva. Los mismos se ajustaron mediante un circuito R(RQ)(RQ). Se encontró que la resistencia a la transferencia de carga aumenta desde la zona columnar hacia la zona equiaxial para las dos aleaciones. Palabras clave: aleaciones Al-Cu, estructuras de grano, biodiesel, corrosión. ABSTRACTThe aim of the present work was to evaluate the susceptibility to corrosion in biodiesel of Al-Cu alloys directionally solidified: Al-4.5wt.%Cu and Al-15wt.% Cu, in function of the type of structure (columnar, equiaxed or columnar-to-equiaxed transition -CET) and chemical composition. Working electrodes were prepared with different types of alloy structures and electrochemical studies data were performed. Industrial biodiesel produced from soybean oil is used. Because of its high resistivity, for performing electrochemical tests, an aqueous extraction of biodiesel was performed, in order to obtain the aqueous ionic fraction, which generates the corrosion process. Potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS) were carried out. These studies were supplemented by observations of the specimens by optical microscopy (OM). The analysis of potentiodynamic polarization curves allows to conclude that the effect of different grain structures is an evidence of the pitting potential, only in the Al-4.5wt.%Cu alloy. Impedance spectra of all samples show a double capacitive contribution. They were simulated using a R(RQ)(RQ) circuit. It was found that the resistance to charge transfer increased from the columnar zone to the equiaxed zone for the two alloys.

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Degradation of automotive materials upon exposure to sunflower biodiesel

Cited by 63 publications

References 15 publications

Corrosion Behaviour of Carbon Steel in Biodiesel–Diesel–Ethanol (BDE) Fuel Blend

Corrosion Behaviour of Carbon Steel in Biodiesel–Diesel–Ethanol (BDE) Fuel Blend

Tri-fuel (diesel-biodiesel-ethanol) emulsion characterization, stability and the corrosion effect

Resistencia a la corrosión de aleaciones Al-Cu en biodiesel

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