For Fe and Cu modified Ni-Co-Cr-Mo alloys,while the presence of Fe enhanced the affinity between metals and HF,Cu element promoted the formation of Cu-rich passive films,replacing Mo-containingCN101748400A - Passivation process of citric acid and The invention discloses a stainless steel passivation process which is mainly technically characterized by taking citric acid and hydrogen peroxide as main compositions of a passivation solution and optimally selecting a volume fraction formula and a process of the stainless steel passivation fluid as follows 3 percent of the citric acid,10 percent of the hydrogen peroxide,5 percent of Cited by 112Publish Year 2007Author C.T.Liu,J.K.WuInfluence of temperature on the electrochemical and Apr 01,2017·In the present work,the corrosion kinetics and passivation behavior of SAF 2507 SDSS in the polluted condensates,simulating lining conditions of chimney in FGD system,are investigated.The influence of temperature on the electrochemical behavior,passive film properties (composition,thickness,structure and electronic properties) are evaluated.
The results showed that the passive film formed on the surface was more compact,highly protective with higher heating temperature.Carriers density and vacancies diffusion coefficient of the passive film formed on Cu-Ni-Fe alloys decreased with higher heating temperature.Cited by 1Publish Year 1995Author A.Mazurkiewics,J.Glowina,J.BanasThe effect of Cu addition on the electrochemical corrosion Jul 01,2010·Our polarization data show that Cu facilitated the onset of passivation,which could be considered a beneficial effect.This facilitation,however,did not significantly improve the corrosion resistance of the passive films (as seen from Fig.6),suggesting that the beneficial effects of Cu on passivation may only be superficial.Our capacitance results provide the basis for the reported adverse effect of Cu on stainless steel passivation,Cited by 20Publish Year 2016Author S.Vafaeian,A.Fattah-alhosseini,M.K.Keshavarz,Y.MazaheriThe Influence of Copper on Passivation of Fe-Cr-Cu and Fe In-Door Atmospheric Corrosion Behavior of Rapidly Quenched Amorphous Zr-Cu Alloys p.789 Home Materials Science Forum Materials Science Forum Vols.185-188 The Influence of Copper on Passivation of Fe-Cr-Cu
The deleterious effects of Cu on the passivation behavior of Fe-20Cr-xCu (x = 0,2,4 wt%) decreased at potentials noble to 500 mV(SCE),primarily as a result of the significant decrease in Cu Effect of Cu Addition on the Microstructure and ·We report on a study of the mechanical behavior of porous Cu containing micron-sized pores and fabricated by de-alloying of a CuFe precursor alloy.Our results show that the minimum volume fraction of pores that can be obtained by using an approach that involves de-alloying of a CuFe precursor alloy is approximately 40 vol%.Moreover,the average pore size formed by de-alloying CuFe HUVRQWKH VXUIDFHRIWKHR )H 6L %Oxidation Behavior of Ta Thin Films as a Passivation Layer Deposited on Cu Takaaki Ichikawa,Mayumi Takeyama and The passivation layers on the Co-Fe-Si-B-M amorphous metallic alloys parameters and conditions of melt solidification have an essential influence on the technological
The deleterious effects of Cu on the passivation behavior of Fe-20Cr-xCu (x = 0,2,4 wt%) decreased at potentials noble to 500 mV SCE,primarily as a result of the significant decrease in Cu content in passive film and hence of the decrease in the oxidation reaction of Cu + to Cu 2+.Influence of Oxygen on Cu Distribution Behavior Between Cu distribution behavior between molten iron and a sulfide flux was investigated under different oxygen contents in the sulfide flux to clarify the effect of oxygen content in FeS-based flux on Cu removal.The activity coefficient of CuS 0.5 could be experimentally estimated according to the oxygen content.Based on the present result,the possibility of Cu removal by sulfide flux containing a Influence of Partial Substitution of Cu by Various The effect on the high temperature oxidation behavior of partially substituting Cu by M,with M = Sn,Ag,V,Nb,Ir,Ru,Ta,in mechanically alloyed Cu-Ni-Fe anode was investigated.Characterization of the as-milled and consolidated powders was achieved through a combination of XRD,SEM and EDX mapping.
May 01,2007·Influence of pH on the passivation behavior of 254SMO stainless steel in 3.5% NaCl solution. nickel and molybdenum in addition to some nitrogen and steel,which are well-known alloying elements that enhance corrosion resistance. this is because during passivation,the outward diffusion of Fe ions is faster than that of other metal ions Influence of the Rear Interface on Composition and 23 hours ago·A significant influence can be observed for the oxygen profile throughout the Al 2 O 3 layer depth.The PDA device presents a noticeably lower intensity for O ions,while the intensity for the OH ions increases correspondingly.This suggests hydrogen passivation of the dangling oxygen bonds,further reducing the amount of negative charges.International Journal of ISSI,Vol.12 (2015),No.2,pp.7-16Stainless Steel by CAE-PVD and Its Effect on the Corrosion and Passivation Behavior of the Coating A.Sanati 1*,K.Raeissi 2,H.Edris 3 1,2, Fe C Si P S Mn Ni Cr Mo Cu Ti V Nb AI SS 304 This condition can influence the corrosion behavior of the coating by building up a galvanic cell between these two phases.Austenitic
The Formation and Properties of a Thick Passive Film on Fe-Cr Alloys with Square Wave Potential Pulse Polarization p.741 The Influence of Copper on Passivation of Fe-Cr-Cu and Fe-Cr-Ni-CuPassivation Characterization of Nickel-Based Glassy Alloys Abstract.The effect of different pH values of artificial sea water on the passivation behavior and the pitting corrosion resistance of Ni 70 Cr 21 Si 0.5 B 0.5 P 8 C 0.1 Co 1 Fe 1 (VZ1) and Ni 72.65 Cr 7.3 Si 6.7 B 2.15 C 0.06 Fe 8.2 Mo 3 (VZ2) glassy alloys were studied using impedance spectroscopy measurements (EIS),cyclic polarization,and electrochemical frequency modulation Passivation and Corrosion Behavior of P355 Carbon SteelPassivation and Corrosion Behavior of P355 Carbon Steel in concrete pore solution has great influence on the passivation of the carbon steel [12,13].However,till taking place corresponding to the oxidation of Fe(OH) 2 to Fe 3 O 4 or Fe 3 O 4 to Fe 2 O 3,respectively .
Oxidation Behavior of Al 8 Co 17 Cr 17 Cu 8 Fe 17 Ni 33,Al 23 Co 15 Cr 23 Cu 8 Fe 15 Ni 15,and Al 17 Co 17 Cr 17 Cu 17 Fe 17 Ni 17 Compositionally Complex Alloys (High-Entropy Alloys) at Elevated Temperatures in Air Oxidation Behavior of Al journal,June 2015.Daoud,Haneen M.; Manzoni,Anna M.; Völkl,Rainer; Advanced Engineering Some results are removed in response to a notice of local law requirement.For more information,please see here.12345NextSynergistic Effect of Mo,W,Mn and Cr on the Passivation Concerning the aspect of alloy elements affecting the passivation behavior,it is well known that the addition of Cr could greatly enhance the corrosion resistance of Fe-based alloys due to the formation of compact and stable chromium-enriched passive film [18,19,20].The role of Mo in corrosion resistance of alloys has been investigated for
Copper and iron are the major ingredients in friction materials,among which Fe often been served as friction reinforcement in the past.But in our recent study,the coefficients of friction (COF) decreased with increasing iron content in composites.In order to study the influence of Cu/Fe ratio on the tribological behavior of the composite under simulative braking conditions,a subscale The influence of cyclic voltammetry passivation on the Aug 25,2016·Since the available literature shows that the influence of the grain size on the electrochemical behavior of ferritic stainless steels has been less studied in particular in alkaline media ,the main purpose of this work is to evaluate the effect of the grain refinement on the corrosion resistance and semiconducting behavior of the passive film formed on AISI 430 stainless steel in 0.1 M NaOH