The principles, methodologies and implications of electrochemically generated silane film materials are reviewed along with some selected recent trends in the fields of functionalized and anti-corrosive sol-gel silica/organosilica films. As a major concern, the recent trends of the electro-assisted generation of organosilica films for corrosion protection are emphasized. The difficulties and the prospective in the study of electrodeposited anti-corrosive silane films are also discussed.

Based on the adsorption and chelation effects between proteins and biomedical metals, this review focuses its attention mainly on the impact of proteins on the corrosion behavior of biomedical metal materials, such as titanium & titanium alloys, stainless steels, cobalt-based alloys, magnesium alloys, and so on. The paper mainly discusses the corrosion behavior and mechanism of biomedical metals affected by albumin, fibrinogen, and serum. Some scientific issues in the present studies and the future research directions are pointed out.

The carburization behaviors of Mn-Cr-O and Mn-Al-O spinels were studied in this paper. Metal stoichiometric ratio was found to have significant effect on the carburization behaviors. A higher amount of Mn than the stoichiometric ratio keeps the spinel structure stable, however a higher amount of Cr than the stoichiometric ratio induces the appearance of secondary Cr₂O₃ phase. In Mn-Al-O system, both MnO and Al₂O₃ have little solubility and excess Mn or Al induces the appearance of secondary phase. In carburization atmosphere both Mn-Cr-O and Mn-Al-O spinel were carburized. It is found when the chemical composition deviates the stoichiometric ratio the carburization resistance ability decreases. Mn-Al-O shows a better carburization resistance than Mn-Cr-O.

Relativity analysis of regional soil property is useful for the soil corrosion estimation on the basis of certain appropriate indicators. This is significantly important for the corrosion control of oil & gas pipeline engineering. However, as we all know, soil properties is extremely complicated in natural environment. Large data dispersion error of the in-situ soil property measurement has been found out. Obviously, routine data statistical methods can not be used in such situation. The Kriging method of spatial data analysis has been applied on the project of typical soil property data according to the field measurement. At the same time, the data analysis software has been developed to deal with the soil characters specified. 300 on-site data have been processed，and the corrosion classification map has been founded based on the evaluation indicators of soil resistivity. This paper described the principle and basic procedures of Kriging method used in soil corrosion assessment, as well as relevant software development and its application.

The electrochemical behavior of low carbon steel in acidic simulation solutions containing different concentrations of H₂S at 90℃ was investigated by mass loss method, electrochemical measurements and observations of scanning electron microscope (SEM) and X-ray radiation diffaction (XRD). The results showed that the cathodic depolarization was enhanced greatly and the corrosion rate of carbon steel increased remarkably with the increase of H₂S concentration. The severe corrosion holes were observed on the carbon steel surface in the H₂S-containing solutions. The corrosion products layer deposited on carbon steel were mainly composed of mackinawite, which became loose，easily cracked and sloughed off with increasing concentration of H₂S.

The electrochemical behavior of SAE-1020 carbon steel in acidic simulation solutions containing H₂S with different concentrations of HCl at 90℃ was investigated by mass loss method, electrochemical measurements, SEM observations and XRD. The results indicated that the cathodic depolarization was promoted greatly and the corrosion rate of carbon steel increased remarkably with the increase of HCl concentration in H₂S-containing solutions. Large numbers of corrosion holes formed on carbon steel in H₂S-containing solution without HCl, whereas only the uniform corrosion characteristic was observed on carbon steel surface in the simulation solutions containing different concentrations of HCl. Mackinawite was the sole corrosion product formed on the carbon steel surface in the H₂S-containing solutions with and without HCl.

The microhardness of the cross section of metal surface layer and the nano-mechanical properties of cavitation corrosion surface layer for austenitic stainless steel after cavitation corrosion test were quantitatively determined by micro/nano mechanics measurement technology on the base of researches on the cavitation corrosion of austenitic stainless steel. The nano-mechanical parameters of cavitation corrosion surface layer and their changes with displacement into surface including in the relation between the degradation of nano-mechanical properties of cavitation corrosion surface layer and cavitation corrosion were studied. It was found that the surface layer of austenitic stainless steel was composed of cavitation corrosion surface layer with smaller hardness, hardening layer with higher hardness and metal substrate under cavitation corrosion. The degradation of nano-mechanical properties for cavitation corrosion surface layer was induced by the interaction between cavitation and corrosion of media，resulting in serious cavitation corrosion of austenitic stainless steel. There was a critical value for the degradation of nano-mechanical properties of cavitation corrosion surface layer, below which austenitic stainless steel was seriously subjected to cavitation corrosion. And that nanohardness played a dominating role during cavitation corrosion of austenitic stainless steel. The ratio of nano-hardness to nano- elastic modulus (H/E) of cavitation corrosion surface layer is a dimensionless function, which can be used for comprehensively measuring degradation degree of cavitation corrosion surface layer of metal and for studying the relation between the degradation of nano-mechanical properties of cavitation corrosion surface layer and the mean depth of cavitation corrosion penetration of metals.

Electrochemical properties and mechanical properties of welded high strength steel were investigated by the slow strain rate test (SSRT) method with applied constant cathodic potential. During tensile process the fracture occurred mainly in the weld fusion zone. There was no correlation between maximum tensile strength, yield strength, strength at failure, and hydrogen embrittlement. However, the elongation rate, time-to-fracture and strain-to-failure rate decreased with shifting potential of the negative direction. And the elongation rate, time-to-fracture and strain-to-failure rate displayed the highest values when the potential was -0.89 V (vs SCE). As the cathode potential shifted negatively, the fracture mode gradually shifted from ductile fracture to brittle fracture, and also the sensitivity of hydrogen embrittlement gradually increased. When the polarization potentials between -0.70~-0.89 V (vs SCE), the hydrogen embrittlement coefficient were less than 5%, the hydrogen embrittlement did not occured. When it was negative to -0.94 V (vs SCE), the hydrogen embrittlement susceptibility rapidly increased, while when the polarization potential was -0.99 V (vs SCE), the hydrogen embrittlement coefficient closed to 20% and the fracture surface exhibited some small cell cleavage characteristics of quasi-cleavage fracture. When the polarization potentials were negative to -1.04 V (vs SCE), the hydrogen embrittlement coefficient were more than 25%, and the material reached into the dangerous zone. The surface of fracture appeared more thick cell cleavage characteristics of quasi-cleavage, and cleavage fracture of hydrogen embrittlement. When the polarization potentials negative to -1.14 V (vs SCE), the specimen occured mainly cleavage organization, intergranular, transgranular structure or combination of the two of brittle fracture characteristics of hydrogen embrittlement.

The corrosion properties of 316L, 304 stainless steel and 20^# boiler steel (20g) in a simulated corrosive atmosphere were investigated by means of accelerated corrosion test. The results show that corrosion rate of 316L was significantly lower than that of 304 and 20g in the simulated atmosphere. From temperature 250℃ to 300℃, the acid dew point corrosion became serious. Cavities were observed in the surface of 304 after the dew point corrosion, at where occurred pitting corrosion.

Self-assembled monolayers (SAMs) of glutamic acid (Glu) were formed on copper surface. The influence of assembling time, Glu concentration and pH values on the protection of the Glu SAMs were examined by electrochemical impedance spectroscopy (EIS). It shows that the protective efficiency (PE) increased with an increase of self-assembling time and self-assembling concentration. The film assembled at 10 mmol/L concentration for 12 h possess the best protective effect. The optimal self-assembling pH is 10. The synergistic effect between iodide ion and Glu was studied by EIS and electrochemical polarization measurement. When iodide ion was added to the Glu-containing solution, the protection effect of the mixed SAMs improved significantly. The adsorption mechanism of the Glu on copper surface was discussed by AM1 quantum chemical calculations.

Aluminum was deposited on steel using arc spraying, and the corrosion electrochemical behavior of the coatings in 3.5% NaCl aqueous solution was investigated. The electron probe micro-analysis (EPMA) was used to examine composition profiles of the coating cross section after 30 day immersion. The results showed that the corrosion medium could penetrate into the coatings along the pores or inclusions, and chloride ions have penetrated into the depth of the coatings. The potentiodynamic polarization curves showed the passivation phenomenon of the original aluminum coating, which was related to the strong adhesion of jelly corrosion product Al(OH)₃ and the existence of Al₂O₃ films. The corrosion failure process of aluminum coating was investigated by means of electrochemical impedance spectroscopy (EIS) measurements. On the basis of the impedance diagram changes during the testing, the process can be separated into four stages: initiation of cavitations, acidification and hydrogen evolution in the hole, coating as the sacrificial anode when the corrosion medium penetrates into steel substrate and rapid development of cavitation groups. Finally various models for the electrode in the corrosion process were proposed.

To improve the corrosion resistance of the flaky aluminum powder, the flaky aluminum powder was coated by emulsion polymerization, which used butyl acrylate and styrene as monomers, sodium dodecyl sulfate as emulsifier and ammonium persulfate as initiator. The effect of the proportion of butyl acrylate and styrene, reaction temperature and reaction time on the corrosion resistance of the coated aluminum powder was examined. The results show: its acid resistance is improved obviously; the coated aluminum powder obtained under the conditions that the proportion of butyl acrylate and styrene (m_BA/m_St) is 1:1, reaction temperature is 80℃ and reaction time is 4 h has good acid resistance. Moreover，the encapsulated samples were analyzed and characterized by Fourier transform infrared spectroscope and scanning electron microscope.

Dissolution characteristic of Cu in BMIMBF₄ ionic liquid under different oxygen partial pressures and temperatures was investigated, and the saturation concentrations of Cu²⁺ in BMIMBF₄ were also measured. The experimental results showed that Cu can only be dissolved in BMIMBF₄ in the presence of oxygen and the dissolution rate of Cu²⁺ in BMIMBF₄ improved with increase in the oxygen partial pressure and temperature. In addition, according to the experimental data, The value of apparent activation energy was found to be \linebreak21.76 kJ/mol in the temperature range from 25℃ to 70℃ under the oxygen partial pressure of 2.10×10⁴ Pa. The dissolution rate equation of Cu in BMIMBF₄ was obtained.

The research of rusted residues of bronze vessels has been a vital task in archaeology research, and many scholars have already done lots of work on it, but there are seldom special research on rusted residues of southern “water bronze vessels”. This paper analyzed the rusted residues of some “water bronze vessels” from Ezhou, using XRD, XRF and metallographic examination, and their soil surroundings were discussed. The reason why these bronze vessels were seriously rusted while their rusted residues were still simple was revealed. The embedding surroundings of these bronze vessels are moist and anoxic and the soil have a high content of SO₄^2- and Cl^-.