[PDF] Top 20 Effect of Harmal Extract on the Corrosion of C-steel in Hydrochloric Solution

... of C-steel in 1 M HCl in the presence of inhibitor are higher than that obtained in the absence of ...the C-steel dissolution process suggesting that the dissolution of C-steel ... See full document

... nontoxic corrosion inhibitor [20-23] and these compounds can be obtained by using simple procedures with low ...oxycedrus extract [24], Fennel oil [25], Argan oil [26] and Artemisia [27] tested as ... See full document

... of C-steel in molar hydrochloric acid solution in the presence of Chenopodium Ambrorsioides Extract (CAE) was investigated using weight loss measurements, potentiodynamic polarization ... See full document

... The calculated thermodynamic adsorption parameters Kads and ∆ G 0 ads for all the studied compounds in 1.0 M HCl solutions are given in Table 7. The negative values of ensure the spontaneity of the adsorption process and ... See full document

... Mild steel is an important category of material due to their wide range of industrial and structural ...of corrosion inhibitors were used to protecting metals against corrosion (Eddy et ...acid ... See full document

... carbon steel sheet was fixed at one end by mechanical jamming, and the electrode was fixed into a Pyrex glass tubing of appropriate diameter by means of araldite (Ciba-Geigy-Switzerland) leaving the exposed ... See full document

... of C- steel was determined, at various time intervals, in the absence and presence of different concentrations of the investigated ...obtained corrosion rate - time curves are represented in ...of ... See full document

... a corrosion inhibitor for carbon steel (CS) in 1 M HCl solution using electrochemical techniques (potentiodynamic polarization (PP), electrochemical impedance spectroscopy (EIS) and electrochemical ... See full document

... inhibition effect of Cetyl trimethyl ammonium chloride (CTMAC) on the corrosion of mild steel in ...0.5M hydrochloric acid solution was investigated at different temperatures using ... See full document

... the corrosion rate (mm/yr) and the inhibition efficiency for mild steel specimens immersed to 2M HCl for 7 days as a function of inhibitor concentration at room ...the corrosion rate decreased as the ... See full document

... 1) Adsorption isotherms: The adsorptive habit of molecules inhibitor are explained by the foundation of adsorption isotherms which can give good thoughts of the kind of the interaction among inhibitor/metal [15].The ... See full document

... tea extract can be owing to the adsorption of organic compounds of extract on carbon steel ...-OH, C=O, C=N, C-O, N-heterocyclic and aromatic ring, which accord the structures of ... See full document

... the effect of increasing concentrations of compound III on the weight loss of 1018 carbon steel coupons vs time curves at 25 ...carbon steel in presence of inhibitor varies linearly with time, and is ... See full document

... CS corrosion in 1N HCl was studied at the temperatures 303k, 313 k and 323 k and the obtained results were shown in Table ...temperature, corrosion rate increases in the presence and absence of GAI due to ... See full document

... mild steel corrosion in 1.0 M HCl solution increases with increase in the concentration of ...the corrosion inhibition of mild steel in ... See full document

... Carbon steel, platinum sheet and silver–silver chloride (Ag/AgCl) electrode were working, counter and reference electrodes, ...the corrosion potential with scan rate 0.5 mV s -1 . The corrosion ... See full document

... Weight loss of metal depends upon strength of the metal itself and reactivity of the corrosive medium. It can be considered as characteristics property of the material which is directly related with the corrosion ... See full document

... [1–3]. Hydrochloric acid and sulfuric acid are widely used for this ...the corrosion attack on steel in acidic media ...the corrosion of the ...as corrosion inhibitors such as: prickly ... See full document

... of corrosion inhibitors arisen in industries has always been a global ...adverse effect of some chemicals, research activities in recent times are geared towards developing cheap, non-toxic and ... See full document

... The corrosion inhibition proficiencies of the various inhibitors were established on mild steel from 100 mg/L to 1000 mg/L of all the inhibitors in 1 M HCl solution at temperatures ranging from 300 K ... See full document